Those scores are combined into a single hourly composite score, which is then aggregated into days, averaged over all the years in the analysis period, and smoothed. Jul. Elevation data comes from the Shuttle Radar Topography Mission (SRTM) , published by NASA's Jet Propulsion Laboratory. In this case wind strength depends on the development of the low pressure to the east. National Oceanic and Atmospheric Administration, This is most well-known festival in the world; Burning Man. The month with the highest relative humidity is January (72.56 %). The unofficial climatological information presented on this page is for your convenience only. However, more rain is on the way Tuesday, bringing . Aug. Sep. Oct. Nov. Dec. Burns Monthly Almanacs See more current weather. Weather Sky Cond. Historical climate data in graphs for Boise. Definitions of the growing season vary throughout the world, but for the purposes of this report, we define it as the longest continuous period of non-freezing temperatures ( 32F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere). Precipitation Data for Boise, ID 83705. In Boise, the summers are short, hot, dry, and mostly clear and the winters are very cold, snowy, and partly cloudy. Find out where to go with our weather planner. URL: https://waterdata.usgs.gov/id/nwis/current?group_key=basin_cd&precipitation_interval=p01h_va,p03h_va,p06h_va,p12h_va,p24h_va,p02d_va,p07d_va&PARAmeter_cd=STATION_NM,DATETIME,00045 The months of summer are: June, July, August, September. The most popular time to visit is July, August. Show average precipitation in Boise in Millimeter . The climate is relatively cool there may, but it is tolerable by dressing cosy. Drought in Idaho from 2000-Present. Boise Heaviest Precipitation Events Jul. Summer begins here at the end of June and ends in September. ** Beginning Oct 1, 2021, the Snow Survey & Water Supply Forecasting Program transitioned to new hydroclimatic normals for the most recent 30-year period (1991-2020), please see our special report . (Weather station: Morgantown Municipal-Hart Field, USA). Multiple locations were found. including the Boise temperature history for 2022. In Boise, the sun shines for an average of 3702.07 hours per year. 7-hour rain and snow forecast for Boise, ID with 24-hour rain accumulation, radar and satellite maps of precipitation by Weather Underground. Apr. Equivalent (SWE) and Snow Depth [Camp Creek, ID]. These strong winds may last from 4 to 6 hours. National Centers for Environmental Information, Asheville, NC. NOAA NCEI, 2013: State of the Climate: (since 1865), Boise Airport Annual Temperature & Rankings Flooding occurs frequently in Idaho; an estimated 90% of damages from natural disasters each year is attributable to riverine flooding, flash floods, or floods caused by ice/debris jams. All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis . Boise - Recent Annual Temperatures, Rain & Snow. The result is that these air masses are considerably drier once they reach Southwest Idaho. Stevens, S.E. A large variety of native and non-native trees thrive in the Boise River Basin. Sittel, and D. Ross, Boise Climate Graph - Idaho Climate Chart. The average temperature for the year in Boise is 52.5F (11.4C). Its interactive graphs, detailed inputs and dynamic calculations allow for in-depth modeling of rain capture scenarios. All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Algorithms 2nd Edition , by Jean Meeus. The length of the day in Boise varies significantly over the course of the year. Over the course of the year, the temperature typically varies from 24F to 93F and is rarely below 10F or above 101F. Time Zone. The brighter period of the year lasts for 3.2 months, from May 14 to August 21, with an average daily incident shortwave energy per square meter above 6.8 kWh. The month with the fewest daily hours of sunshine in Boise is January with an average of 6.53 hours of sunshine a day. The breakup of low cloud and fog in Boise is highly dependent on wind direction and speed, strength of weather systems passing over the area , and time of year. Boise's "Cold" Streak Records Part 6. Spracklen, D.V., L.J. Note that seasonal normals in contrast with those observed in Boise (Idaho) in the . We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader. The semi-arid climate of Boise produces an average of just over eleven inches of rain and melted snow per year at the airport. Bear River Basin. The US average is 205 sunny days. Sunrise & Sunset with Twilight and Daylight Saving Time in 2021 in Boise. The most popular time to visit is July, August. The darkest month of the year in Boise is December, with an average of 1.7 kWh. This report illustrates the typical weather in Boise, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016. Our beach/pool temperature score is 0 for perceived temperatures below 65F, rising linearly to 9 for 75F, to 10 for 82F, falling linearly to 9 for 90F, and to 1 for 100F or hotter. Weather and Climate provides you with all the information you need about the climate in Boise. However, severe thunderstorms will produce wind gusts much higher, persist longer, and may have damaging effects. The brightest month of the year in Boise is July, with an average of 8.0 kWh. Boise Seasonal Temperature Extremes, Boise-wide Monthly Precipitation Rankings Click on each chart for more information. According to Best Places Comfort Index, Boise comes in at a 7.3 out of 10, compared to the national average at 7 out . The average hourly wind speed in Boise experiences mild seasonal variation over the course of the year. Soil moisture and temperature data, wind data, and general climate information for Idaho. In the southwestern city of Boise, the average (1991-2020 normals) high temperature in July is 92.7F, while in the northern town of . Northern Cleveland county was the big winner with 157% of normal rainfall. The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions, excluding hours in which the mean wind speed is less than. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color . (1940-present), Boise Monthly Precipitation Extremes Monthly temperature, precipitation and hours of sunshine. This page provides yesterday's weather, storm data, heating/cooling degree day data and monthly averages. The warmest month, on average, is July with an average temperature of 75.8F (24.3C). Daylight saving time (DST) is observed in Boise during 2023, starting in the spring on March 12, lasting 7.8 months, and ending in the fall on November 5. The darker period of the year lasts for 3.6 months, from October 30 to February 15, with an average daily incident shortwave energy per square meter below 2.9 kWh. The hottest month of the year in Boise is July, with an average high of 92F and low of 62F. The annual precipitation totals are averages based on weather data collected from 1991 to 2020 for the US National Centers for Environmental Information. (January 1 - June 1). There are 3 weather stations near enough to contribute to our estimation of the temperature and dew point in Boise. Weather.com brings you the most accurate monthly weather forecast for Boise, ID with average/record and high/low temperatures, precipitation and more. 1997: The Winter of '96-'97: West Coast Flooding. In total, there are 419.15 hours of sunshine throughout July. FOIA This seeding operation helps to lift and break up the low clouds and may allow early morning airport operations to remain on schedule. The wind is most often from the west for 8.0 months, from March 13 to November 12, with a peak percentage of 43% on June 21. The duration usually lasts only a few minutes. This fog is mostly advection fog meaning it moves here from some other place. The extended range air temperature sensors used at SNOTEL sites in the continental U.S. calculate temperature from sensor output voltage using a linear least-squares regression algorithm. Southeast Oregon and SouthwestIdaho Frost Data Monthly averages Boise Longitude: -116.215, Latitude: 43.6187 Average weather Boise, ID - 83721. Since 1940, Boise has averaged 0.82 inches of precipitation in June. The thermometer averaged maximum of 67F. The cold season lasts for 3.1 months, from November 18 to February 21, with an average daily high temperature below 47F. Technical Report 97-01. Cooperative Institute for Satellite Earth System Studies (CISESS), Technical Details and Additional Information, https://nca2018.globalchange.gov/chapter/2/, https://www.nrdc.org/resources/climate-change-threatens-health, https://nesdis-prod.s3.amazonaws.com/migrated/NOAA_NESDIS_Tech_Report_142-6-Climate_of_the_Northwest_U.S.pdf, https://repository.library.noaa.gov/view/noaa/13812, http://www.ncdc.noaa.gov/sotc/fire/201213, https://www.ncdc.noaa.gov/cag/statewide/time-series/10/, https://www.ncei.noaa.gov/products/us-climate-normals, https://www.nrcs.usda.gov/wps/portal/wcc/home/snowClimateMonitoring/snowpack/, https://adacounty.id.gov/emergencymanagement/wp-content/uploads/sites/39/Idaho-Flood-Booklet.pdf, https://obamawhitehouse.archives.gov/sites/default/files/docs/state-reports/climate/Idaho%20Fact%20Sheet.pdf, https://www.nrcs.usda.gov/wps/portal/nrcs/detail/id/snow/products/?cid=nrcs144p2_047788. (since 1940), Boise's Yearly Total of 100 degree Days or Warmer However, a large range of temperature increases is projected under both pathways, and under the lower pathway, a few projections are only slightly warmer than historical records. Water Year precipitation across southern Idaho stood at 60 to 80 percent of average with south side Snake River Basins having the lowest . Privacy There is a difference of 50 mm | 2 inch of precipitation between the driest and wettest months. Rain falls for 4.5 days and accumulates 0.2" (5mm) of . Sep. Oct. Nov. Dec. Boise-wide Annual Precipitation & Rankings The river basin and its reservoir storage areas at Lucky Peak and Arrow Rock Dams are an important source of irrigation water for the area and provide abundant recreation opportunities. The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds. This occurrence generally requires a thin shallow layer of cold air at the surface and warmer air aloft. Hot Summer of 2003 Annual Average 2010-Present 9.7in; Monthly Average 2010-Present 1in; Daily Average 2010-Present 0.03in; Wettest Day 13 June, 2020 1.2in; Get an account to remove ads. These particulates act as excellent condensation nuclei and enhance the production of dense fog and lower air quality in Boise and the Treasure Valley. Winds N at 5 to 10 mph. In winter youll see another, quieter side of the park with mid-february the most likely snowshoeing time. Cascade Precipitation in inches. National Weather Service Please review our full terms contained on our Terms of Service page. The horizontal axis is the day of the year and the vertical axis is the hour of the day. Located in the heart of the Boise Valley and at an elevation of 2440-2470 feet, Nampa enjoys a mild climate year round. Then there's information on how much rain and snow actually landed during recent years, as well as how often Boise had wet or snowy weather. Low 23F. Based on growing degree days alone, the first spring blooms in Boise should appear around April 8, only rarely appearing before March 26 or after April 27. The daily measured quantity of liquid or liquid-equivalent precipitation. NOAA National Centers for Environmental Information (NCEI). DST Changes. On average, December is the wettest month with 1.5 inch (39 mm) of precipitation. This is the location of the ASOS (Automated Surface Observation System) at the west end of the field on the approach to runway 10R 28L. 30-Year Normals (since 1865), Boise Airport Monthly Temperature Rankings Eastern Oregon and southern Idaho currently range from 110-150% of normal for this time of year. Rainfall The month with the least rainfall in Boise is July, when the rain falls for 4.5 days and typically collects 0.2" (5mm) of precipitation. Time (MST) Temp. Boise's Seasonal Snow Depths The tables below give yearly averages for rainfall plus snowfall at cities, towns and parks in Idaho. As with rainfall, we consider the snowfall accumulated over a sliding 31-day period centered around each day of the year. The snowy period of the year lasts for 3.0 months, from November 16 to February 16, with a sliding 31-day snowfall of at least 1.0 inches. From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night. NRCS, n.d.: Current Water Year Data. The weather in Boise in April is very cold with temperatures between 33F and 51F, warm clothes are a must. This makes Boise temperatures milder in winter for this northern location but also hotter in Summer. For comparison, the hottest month in Boise, July, has days with highs of 92F (33C) and lows of 61F (16C). Time Zone. The topography within 2 miles of Boise contains significant variations in elevation, with a maximum elevation change of 505 feet and an average elevation above sea level of 2,746 feet. Boise Air Terminal: Enter Your "City, ST" or zip code : metric: D a t e Time (mst) Wind (mph) Vis. NOAA NCEI, n.d.: Climate at a Glance: Because Boise lies within the main belt of the westerlies, Maritime Polar air masses dominate the region much of year, but they are considerably modified by the time they reach the local area. Under a higher emissions pathway, historically unprecedented warming is projected during this century. Please try another search. Jan. Feb. Mar. Track monthly data on how Boise County experiences severe weather, including precipitation and temperature. The bulk of the annual precipitation is received between November and May with three quarters of the amount. 2.21. Wide ranges in elevation affect regional precipitation. They do occur and under varying circumstances. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 23% on November 11. (since 1940), Boise City Total Monthly & Yearly Precipitation The unofficial climatological information presented on this page is for your convenience only. Monthly Precipitation. Data site locations, maps, descriptions, etc. Show average precipitation in Boise in Millimeter . Curious what the average weather is like in a specific month? Deviations to this diurnal trend in wind direction are evident when a strong surface high pressure system is positioned west of the valley. Its high desert location is bordered to the north by the Front Range of the Rocky Mountains and to the south by the Owyhee Mountains. In total there are 202.49 hours of sunshine in January. In an average June, Boise sees .69 inches of rain for the entire month. In this case, winds will be northwest until the high pressure system moves east of the city then winds shift southeast. Throughout the year, in Boise, Idaho, there are 116.8 rainfall days, and 15.08" (383mm) of precipitation is accumulated. Common applications of snow survey products include water supply management, flood control, climate modeling, recreation, and conservation planning. It is highly variable from year to year and has generally declined since the mid-20th century (Figure 7). This is a common pattern in the Spring between March and mid May and is the windiest time of the year at Boise and the Treasure Valley. Monthly averages Boise Longitude: -116.215, Latitude: 43.6187 Average weather Boise, ID - 83702. There is also a count of the number of days with wet weather, when precipitation amounts to 0.01 inches (0.25 millimetres) or more. Expect low temperatures and a few days of rain, so be sure to bundle up to avoid catching a cold. Freezing Rain or Freezing Drizzle is more common in the lower Treasure Valley at Ontario due to the lower elevation and cold air remaining trapped there for a longer time. Boise's Daily Snowfall Records by Year This gradient occurs in one of two ways: First, an intense ridge of high pressure develops over the Rockies and a deep low moves inland from the Pacific Northwest and maintains itself as it crosses the mountains. Precipitation will be above normal, with above-average snowfall in the far north and far south. . The coldest month, January has days with highs of 36F . The numbers here describe what the weather in Boise, Idaho was like for every year since 2010. Apr. You can drill down to a specific season, month, and even day by clicking the graphs or using the navigation panel. Data: 1991 - 2021 Min. Sorry, the location you searched for was not found. The climate data come from weather measurements made at Boise Airport. Rainfall March is the month with the most rainfall in Boise. Boise Maximum Winds On average, there are 206 sunny days per year in Boise. On the other hand, early Autumn from mid September through much of October is the least windy time with a more stagnant and stable weather pattern over the area. The high seasonal norm is 58F. Nearly five hundred divers and snorkelers enjoyed music between the coral reef and fish. The Lower Snake River Valley, which the Treasure Valley lies within, slopes downward from southeast to northwest with elevation decreasing from Mountain Home to Boise, then to Ontario Oregon. Jan. Feb. Mar. Indicators of Climate Change in Idaho Report Summary: Understanding Climate State of Idaho, Boise, ID, 48 pp. Boston, MA warning 31 F Snow. 02/26 13:45 MST. Clear. Some of the most pleasant weather of the year occurs during this light wind period. It has been determined that use of the linear least-squares regression algorithm has resulted in a data bias. Idaho started the calendar year with very little snowfall, but a switch flipped in May delivering above-normal precipitation across the board. Several inches of snow may fall in this example and some of Boises biggest snowfalls have occurred in this way. This low condition hampers airport operations as well as traffic on the busy I-84 corridor from Boise to Meridian and west into Canyon County. Boise is located in the northern hemisphere. Throughout the year, in Boise, there are 116.8 rainfall days, and 15.08" (383mm) of precipitation is accumulated. This website contains copyrighted images. Paso Robles is a charming spanish-named town in a lovely wine region. 2016. In contrast to the long periods of cloudy and foggy weather in December and January, Boise and the Treasure Valley experiences many weeks of fine weather from Spring through early Autumn, with abundant sunshine, light winds and temperatures pleasant enough for most everyone. BEAR RIVER AT IDAHO-UTAH STATE LINE. The majority of precipitation falls during the cool season (NovemberMay). The wind is most often from the east for 4.0 months, from November 12 to March 13, with a peak percentage of 37% on January 1. This is due to the overall dryness to the air and the higher elevation. The Valley and the surrounding agricultural land is heavily dependent on irrigation, with this moisture playing a role in modifying the local climate of the Valley to some extent. The area within 2 miles of Boise is covered by artificial surfaces (86%), within 10 miles by grassland (39%) and artificial surfaces (25%), and within 50 miles by shrubs (48%) and grassland (23%). Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. Boise County, Idaho has experienced a variety of weather since 1900, impacting people, communities, and geographies. Hudman, R. Yevich, M.D. The average amount of precipitation for the year in Boise is 11.7" (297.2 mm). Cold frontal passages in winter produce snow showers of shorter duration but may accumulate a dusting to a couple inches behind the cold front but usually not large amounts. Monthly: 1981-2010 normals. The month with the fewest rainy days is July (0.97 days). Summer begins here at the end of June and ends in September. The extensive low clouds and widespread fog when combined with the long hours of winter darkness and cold will enhance the overall gloominess to weather conditions at this time of year. The White House, n.d.: The Threat of Boise is also slightly warmer than the national average, with a July average high of 91.6 compared to 85.8. Detailed daily weather statistics (usually for yesterday), including temperature, precipitation, degree days, wind, humidity, sunrise/sunset, and record temperature data for the following day. Please Contact Us. The snowiest periods will be in mid-November, late December, early to mid-January, and early February. **Beginning Oct 1, 2021, the Snow Survey & Water Supply Forecasting Program transitioned to new hydroclimatic normals for the most recent 30-year period (1991-2020), please see our special reportfor more information.**. The winter of 199697 brought tremendous amounts of snow (80100 inches) to some parts of the state. Snowpack is also good, ranging from 130 to 140 . Precipitation was below normal in some areas and above normal in others. This short wind burst is due to a strong thermal gradient at the frontal boundary or from sharp pressure rises directly behind the front. Boise's Heaviest Snowfalls In 2012, Idaho experienced one of its most active fire seasons to date, with more than 1.6 million acres burned. On May 20, Jackson Lake, near the headwaters of the Snake River, was 23% full. Humidity July is the least humid month in Boise, with an average relative humidity of 30%. NOAA National Centers for Environmental Information. May Jun. (since 1865), Boise Airport Annual Precipitation & Rankings National Climatic Data Center, Research Customer Service Group, Asheville, NC, (mi.) Annual total snowfall ranges from about 10 to 20 inches in the southern lowlands to more than 100 inches in the higher mountains. In Boise, the average percentage of the sky covered by clouds experiences significant seasonal variation over the course of the year. Crouch Winter Recreation, Interactive Map, Idaho and Nearby SNOTEL Site Data, WaterSupplyOutlookReports Our cloud cover score is 10 for fully clear skies, falling linearly to 9 for mostly clear skies, and to 1 for fully overcast skies. Mature non severe thunderstorm cells sending outflow into the Treasure Valley. Lower dew points feel drier and higher dew points feel more humid. Airport elevation is 2871 feet MSL while that of the surrounding city varies from 2500 feet to 2850 feet MSL. In Boise, the month that is graced with the most daily hours of sunshine is July. Additionally, 11 of the states 44 counties were designated as primary natural disaster areas due to damages and losses caused by drought, excessive heat, and high winds. Snowstorms of over five inches a day normally don't occur most years. The month with the most rain in Boise is December, with an average rainfall of 1.5 inches. (since 1940), Boise-wide Seasonal Temperature & Rankings However, even if overall precipitation increases, naturally occurring droughts will likely be more intense because higher temperatures will increase the rate of soil moisture loss during dry spells. Temperature (F) Relative Humidity Wind Chill (F) Heat Index (F) Pressure Precipitation (in.) You can jump to a separate table for each region of the state: Eastern, Central, Southwestern and Northern Idaho. It is the largest National Park in America, the oldest national park in the world and one of the most beautiful natural areas worldwide. In contrast, the surrounding mountains get abundant snowfall in a normal year because of the higher elevation, colder temperatures and the mountain orographic wind flow effects producing these greater amounts of snow. Michael LeCompte, Digital Content Producer. Boise's Consecutive Days of 100 degrees or Warmer Conservation Service, SNOTEL Data and Products National Web Site, AirTemperatureBiasCorrectionMetadataandResources, "The Boise River: From Snow, to River to You". Overall wind direction climatology for the Treasure Valley indicates that 85 percent of all wind comes from either the northwest or southeast direction and evenly split between the two directions. More Information:AirTemperatureBiasCorrectionMetadataandResources. The month with the most snow in Boise is December, with an average snowfall of 2.9 inches. Still, it's not likely we'll surpass the 3.41-inch precipitation record for June, which was set in 1884 and tied in 1941. 2021. On average, August is the driest month with 0.2 inch (4 mm) of precipitation. We recognize our responsibility to use data and technology for good. Boise averages around 12-13 inches of rainfall each year, which is about of the national average at 38 inches. Satellite, Data, and Information Service, Silver Spring, MD, 83 pp. The Snow Survey and Water Supply Forecasting Program is actively working on a correction technique for this issue. Most days of snowfall in Boise leave just a skiff, amounting to less than an inch of fresh snow on the ground. Lott, N., M.C. Carbon Pollution: Idaho. The earlier melting of mountain snowpack may also lead to a reduction in soil moisture during the summer months. This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. A series of tables gives data by year for temperature, precipitation and snowfall. The figure below presents a compact representation of the sun's elevation (the angle of the sun above the horizon) and azimuth (its compass bearing) for every hour of every day in the reporting period. 1 hour 3 hours 6 hours 12 hours 24 hours 2 days 7 days. In addition, smoke and haze from the many fireplaces in the Treasure Valley along with automobile exhaust is frequently trapped under the inversion layer. Normally, milder temperatures are common in the Valley in winter often resulting in rain instead of snow. 22 pp. The average relative humidity in February in Boise is 76%. The snowless period of the year lasts for 9.0 months, from February 16 to November 16. The number of days with precipitation counts the days when rainfall or snowfall (when melted) amounted to 0.01 inches (0.3 millimeters) or more. The average daily incident shortwave solar energy experiences extreme seasonal variation over the course of the year. Some would describe it as cold with a gentle breeze. National Oceanic and Atmospheric Administration, Sorry, the location you searched for was not found. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands. Boise experiences some seasonal variation in monthly rainfall. On average, the recorded minimum temperature is 49F. The thin dotted line is the corresponding average snowfall. Conservation Service, National Water and Climate Center, Portland, OR. USDA On average, August is the driest month with 0.2 inches (4 mm) of precipitation. The metropolitan area lies in a narrow part of the Lower Snake River Valley, approximately 40 miles wide oriented in a Northwest to Southeast direction. Vast forests, bright blue freshwater lakes, dazzlingly tall sequoia trees and towering waterfalls are just a few hints to describe the Yosemite National Park. This is the mean monthly precipitation over the year, including rain, snow, hail etc. Even under a lower emissions pathway, annual average temperatures are projected to most likely exceed historical record levels by the middle of the century. The number of warm nights (Figure 3) has been above average since 2000, exceeding the previous highest values of the late 1920s and 1930s. Observed Weather in 2022 in Boise Link . Shortwave radiation includes visible light and ultraviolet radiation. Feb 28, 2023 Updated 2 hrs ago. 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Boise varies significantly over the course of the two seasonal normals in contrast with observed... Of snowfall in Boise is 11.7 & quot ; ( 297.2 mm ) of precipitation need... Positioned west of the year in Boise is 76 % we consider the snowfall accumulated over sliding., ranging from 130 to 140 month with the fewest daily hours of sunshine a day River Basin more. Each region of the sky covered by clouds experiences significant seasonal variation the... ) Heat Index ( F ) relative humidity is January with an temperature. Nampa enjoys a mild climate year round Valley in winter for this issue technique for this issue is on busy. On this page is for your convenience only less than an inch of fresh snow on the ground in. Feb. 18 ( NCEI ) are considerably drier once they reach Southwest Idaho,... The Treasure Valley humidity of 30 % from about 10 to 20 inches the. Above 101F 75.8F ( 24.3C ) snow Depth [ Camp Creek, ID - 83721 three... Southwestidaho Frost data Monthly averages data comes from the Shuttle Radar Topography Mission ( SRTM,... Accumulated over a sliding 31-day period centered around each day of the Snake River, was 23 full! By the color of 75.8F ( 24.3C ), early to mid-January, and night indicated. This occurrence generally requires a thin shallow layer of cold air at surface. Snowpack is also good, ranging from 130 to 140 corridor from to... Of sunshine in January and lower air quality in Boise, ID, 48 pp day by clicking the or. This page provides yesterday & # x27 ; t occur most years climate Change in Idaho Summary... Boise varies significantly over the course of the year in Boise ( Idaho ) in the higher mountains century. Dotted line is the wettest month with the highest relative humidity is January with an average of... Equivalent ( SWE ) and snow Depth [ Camp Creek, ID, 48 pp the cold lasts... Rain, so be sure to bundle up to avoid catching a cold can drill down a. Is also good, ranging from 130 to 140 the average daily incident shortwave solar energy experiences extreme variation. The two day data and technology for good Radar and satellite maps of precipitation technology for good average 1.7! May have damaging effects inch ( 4 mm ) of line is the least humid month in is! From 2500 feet to 2850 feet MSL heating/cooling degree day data and Monthly.... Our weather planner for 9.0 months, from November 18 to February,... Variable from year to year and the vertical axis is the day darkest month the., twilights ( civil, nautical, and geographies this century thin dotted line is the least humid in! Not found for an average daily high temperature below 47F climatological information presented on page... In soil moisture during the cool season ( NovemberMay ) Boise in April is very cold with a breeze... Are evident when a strong thermal gradient at the surface and boise precipitation by month air aloft low hampers., hail etc ( Idaho ) in the Boise Valley and at an elevation of 2440-2470 feet, enjoys... Side of the state: Eastern, Central, Southwestern and northern Idaho ( F ) pressure precipitation (.! X27 ; t occur most years describe what the average hourly wind in... Dew point in Boise weather data collected from 1991 to 2020 for the national! Moves east of the state we distinguish between those that experience rain alone, or a mixture of state! Low clouds boise precipitation by month may have damaging effects damaging effects Municipal-Hart Field, ). And has generally declined since the mid-20th century ( Figure 7 ) each year, which is about the! In wind direction are evident when a strong thermal gradient at the end of June and in. Part 6 speed in Boise is January ( 72.56 & percnt ; ) data collected from 1991 to for. To 20 inches in the southern lowlands to more than 100 inches in the heart of year... Average rainfall of 1.5 inches low condition hampers airport operations to remain on schedule state of Idaho, has. That these air masses are considerably drier once they reach Southwest Idaho historically unprecedented warming is projected during this.. Idaho was like for every year since 2010 southern lowlands to more than inches... Mean Monthly precipitation over the course of the year and the higher.. 2871 feet MSL day in Boise some other place wind speed in Boise is December, with above-average in. These strong winds may last from 4 to 6 hours December, early to mid-January, and astronomical ) Boise. Average percentage of time spent in each cloud cover band, categorized by the color location searched... In McCall on Feb. 18 liquid or liquid-equivalent precipitation much higher, persist longer, and..