The tables below give yearly averages for rainfall plus snowfall at cities, towns and parks in Idaho. Boise's Consecutive Days of 100 degrees or Warmer Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database . Abbreviations. Caldwell The cloudier part of the year begins around October 13 and lasts for 7.9 months, ending around June 10. Climate Data Online (CDO) provides free access to NCDC's archive of global historical weather and climate data in addition to station history information. 02/26 13:45 MST. Time (MST) Temp. Get the facts here, including data from the National Oceanic and Atmospheric Administration. Local sources of surface water are the Boise River meandering through the city and the Snake River 20 miles to the south. The average amount of precipitation for the year in Boise is 11.7" (297.2 mm). Regional Climate Trends and Scenarios for the U.S. National Climate Assessment The least snow falls around July 11, with an average total accumulation of 0.0 inches. The stations contributing to this reconstruction are: To get a sense of how much these sources agree with each other, you can view a comparison of Boise and the stations that contribute to our estimates of its temperature history and climate. It is the largest National Park in America, the oldest national park in the world and one of the most beautiful natural areas worldwide. The duration usually lasts only a few minutes. 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. Scattered clouds. Yellowstone National Park is the crown jewel of America's nature parks, Yosemite National Park is definitely worth a visit, Go on a sustainable wine tour in Paso Robles, Show average precipitation in Boise in Millimeter, many cities in the United States of America, Find out where to go with our weather planner. Snowfall In Boise, snow does not fall in May through October. This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a 50-kilometer grid. Still, there are other times when rain shadowing effects are in place from the Owyhee Mountains to the Southwest. Gillis, S., B. Knapp, J. Wolf, J. Izo, Our precipitation score, which is based on the three-hour precipitation centered on the hour in question, is 10 for no precipitation, falling linearly to 9 for trace precipitation, and to 0 for 0.04 inches of precipitation or more. Station Data. The figure below shows you a compact characterization of the entire year of hourly average temperatures. It is highly variable from year to year and has generally declined since the mid-20th century (Figure 7). Sun & Moon. Similarly, deep low pressure systems to the west of Boise or highs to the east have the opposite effect to overcome the diurnal influences. Winds N at 5 to 10 mph. The low-elevation regions of southern Idaho are shielded by mountains to the east and west, reducing the amount of moisture that can penetrate the area and resulting in generally low amounts of precipitation. The driest month is July, with 3 mm | 0.1 inch of rain. The background color fills indicate the azimuth (the compass bearing) of the sun. Title: USGS Current Conditions for Idaho The transitions to and from daylight saving time are indicated by the 'DST' labels. The Cascade and Blue Mountain Ranges in Oregon and Washington modify Pacific Maritime air masses as they move east to the Treasure Valley and the city of Boise. 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. 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. Throughout the year, in Boise, there are 116.8 rainfall days, and 15.08" (383mm) of precipitation is accumulated. The coolest month on average is December, with an average temperature of 30.7F (-0.7C). According to KTVB.com of Boise, Dooley was booked into the Ada County Jail on Monday on the first-degree murder charge, as well as charges of aggravated battery and . University of Idaho, Moscow, ID, 15 National Oceanic and Atmospheric Administration Data: 1999 - 2019: avg. . And in the west end of the Treasure Valley a persistent temperature inversion with snow cover keeps winter temperatures several degrees colder than Boise. 10092700. Jan. Feb. Mar. 4.31. Common applications of snow survey products include water supply management, flood control, climate modeling, recreation, and conservation planning. The month with the fewest wet days in Boise is July, with an average of 1.4 days with at least 0.04 inches of precipitation. Boise's Monthly & Seasonal Snow Totals In order for precipitation to be counted you have to get at least .01 inches on the ground to measure. The tourism score favors clear, rainless days with perceived temperatures between 65F and 80F. 1.65 1.59 sdww02. Details on observations and projections are available on the Technical Details and Additional Information page. 28: 07:53: S 5: 10.00: Overcast: BKN055 OVC075: 32: . Monthly temperature, precipitation and hours of sunshine. May Jun. The hot season lasts for 2.9 months, from June 15 to September 11, with an average daily high temperature above 82F. In the absence of dynamic weather systems, the Mountain/Valley terrain relationship causes a diurnal trend in the wind direction. You can jump to a separate table for each region of the state: Eastern, Central, Southwestern and Northern Idaho. Weather Today Weather Hourly 14 Day Forecast Yesterday/Past Weather Climate (Averages) Currently: 37 F. NOAA NCEI, n.d.: U.S. Idaho started the calendar year with very little snowfall, but a switch flipped in May delivering above-normal precipitation across the board. Boise County, Idaho has experienced a variety of weather since 1900, impacting people, communities, and geographies. This is due to the overall dryness to the air and the higher elevation. Average precipitation in : Av. The average relative humidity in February in Boise is 76%. This nation-wide website presents information about the weather and climate for almost every country around the world. The White House, n.d.: The Threat of Sea Level Pressure Extremes at Boise Please try another search. Within 10 miles contains significant variations in elevation (3,980 feet). Click on each chart for more information. Rainfall July is the month with the least rainfall in Boise. Get notified about our newest bucket list destinations and more! This situation is most likely if it occurs during the period from Thanksgiving to Valentines Day when stagnant high pressure systems usually move over the area and stall. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray. Because much of the moisture from wet Pacific air masses is lost when they cross the mountains ranges to our west, Boise has its high desert semi-arid climate typical of many areas of the Inland Pacific Northwest or northern Great Basin. See all locations in Idaho. U.S. Geological Survey See more current weather. The lowest recorded temperature in Boise is -25.0F (-31.7C), which was recorded in December. Boise's "Hot" Streak Records Boise Climatology and Unique Local Data. See more current weather. In 2012, Idaho experienced one of its most active fire seasons to date, with more than 1.6 million acres burned. Monthly Precipitation. Boise's Daily Snowfall Records by Calendar Day Please note that each source's contribution is adjusted for elevation and the relative change present in the MERRA-2 data. Snowpack is also good, ranging from 130 to 140 . 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. Since 1940, Boise has averaged 0.82 inches of precipitation in June. Boise's White Christmases, Boise and Burns Normals, Means & Extremes. The month with the least rain in Boise is July, with an average rainfall of 0.2 inches. Extreme precipitation events are projected to become more frequent. WIND DIRECTION: Every July you can go to the underwater festival in Florida. Air Dwpt 6 hour altimeter (in) sea level (mb) 1 hr 3 hr 6 hr; Max. Boise Air Terminal: Enter Your "City, ST" or zip code : metric: D a t e Time (mst) Wind (mph) Vis. It has been determined that use of the linear least-squares regression algorithm has resulted in a data bias. . The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Winter and spring precipitation is also projected to increase in Idaho over this century (Figure 8), while decreases in summer precipitation are possible, especially in the southeastern portion of the state. Top 40 Warmest Boise Summers A record-high number of events (more than 2 per year) occurred during the 19951999 period. (since 1940), Boise-wide Seasonal Temperature & Rankings Indicators of Climate Change in Idaho Report Summary: Understanding Climate Mountain barriers block very cold air masses from the east and north and also dry out Pacific air masses from the west. 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. 2010-2023 World Weather & Climate InformationAll rights reserved. In the southwestern city of Boise, the average (19912020 normals) high temperature in July is 92.7F, while in the northern town of Coeur DAlene, it is 82.8F. Conservation Service, National Water and Climate Center, Portland, OR. The rainstorm Sunday did help bring Boise's precipitation totals closer to normal for the water year, but the total still lags by 1.35 inches. The month with the fewest rainy days is July (0.97 days). Our tourism temperature score is 0 for perceived temperatures below 50F, rising linearly to 9 for 65F, to 10 for 75F, falling linearly to 9 for 80F, and to 1 for 90F or hotter. Boise Monthly Almanacs Boise's "Cold" Streak Records The year 2015 was the second-hottest (after 1934) since records began in 1895, with a statewide average temperature of 46.4F. January to March 2022 is the third driest start to the year in Boise since 1878. Weather Highlights We assume no responsibility for any decisions made on the basis of the content presented on this site. Clear, rainless days with perceived temperatures between 65F and 80F the coolest on... Rainless days with perceived temperatures between 65F and 80F ( -31.7C ), which was recorded December! Snow survey products include water supply management, flood control, climate modeling,,! Water supply management, flood control, climate modeling, recreation, and conservation planning the linear least-squares algorithm... 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