NWS The month with the most rainy days is December (10.77 days). Boise weather by month. Apr. The windier part of the year lasts for 4.4 months, from February 8 to June 21, with average wind speeds of more than 6.9 miles per hour. The year 2015 was the second-hottest (after 1934) since records began in 1895, with a statewide average temperature of 46.4F. In 2012, Idaho experienced one of its most active fire seasons to date, with more than 1.6 million acres burned. Climate in Idaho is comprised of many factors that impact our communities, schools, and businesses over time. (since 1865), Boise Airport Seasonal Precipitation & Rankings National Oceanic and Atmospheric Administration, Partly cloudy. The semi-arid climate of Boise produces an average of just over eleven inches of rain and melted snow per year at the airport. Boise Air Terminal: Enter Your "City, ST" or zip code : metric: D a t e Time (mst) Wind (mph) Vis. The K ppen Climate Classification subtype for this climate is "Csb". Total annual precipitation at long-term monitoring stations ranges from more than 40 inches at some northern mountain sites to less than 10 inches at sites in the southwest. See your browser's documentation for specific instructions. 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 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. Heavy snowstorms are uncommon for Boise. The fog can become locally dense reducing visibility to less than one-quarter mile at the Boise Airport and vicinity. The average low-temperature, in Boise, is 34.3F (1.3C). The hottest month of the year in Boise is July, with an average high of 92F and low of 62F. We assume no responsibility for any decisions made on the basis of the content presented on this site. Sun & Moon. Change and Its Impacts Through Indicators. Monthly averages Boise Longitude: -116.215, Latitude: 43.6187 Average weather Boise, ID - 83721. Home | Privacy & Cookies | Contact | About. The driest year on record for Idaho was 1935, with a total of 16.2 inches of precipitation, while the wettest was 1996, with 32.10 inches. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases. 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. The horizontal axis is the day, the vertical axis is the hour of the day, and the colored areas indicate when the moon is above the horizon. Gillis, S., B. Knapp, J. Wolf, J. Izo, Weather Today Weather Hourly 14 Day Forecast Yesterday/Past Weather Climate (Averages) Currently: 42 F. Climate. 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. Boise is going to be cold and wet in the month of April. This nation-wide website presents information about the weather and climate for almost every country around the world. Apr. Rainfall totals are given for the past 7, 10, 14, 30, 60, and 90 days up to the current date, as well as the total for the current month, year, and previous year. The all time record high temperature at Boise was 111F degrees set on 19 July 1960 while the record low was 25 degrees below zero set on 22 December 1990. Please try another search. Rainfall March is the month with the most rainfall in Boise. These particulates act as excellent condensation nuclei and enhance the production of dense fog and lower air quality in Boise and the Treasure Valley. In addition, the Rocky Mountains to the east act as a barrier to cold shallow air masses moving southward from Canada in winter. Wildfires for Annual 2012. Jul. Boise is located in the northern hemisphere. The cloudier part of the year begins around October 13 and lasts for 7.9 months, ending around June 10. Boise and the Treasure Valley have a typical high desert temperature regime. Under a higher emissions pathway, historically unprecedented warming is projected during this century. Station Data. (since 1940), Boise-wide Seasonal Precipitation & Rankings ET Feb. 28 at . Find our. We now have a tool which suggests which destination suits your ideal climate conditions. The cold season lasts for 3.1 months, from November 18 to February 21, with an average daily high temperature below 47F. Flannigan, and A.L. In Boise, the summers are short, hot, dry, and mostly clear and the winters are very cold, snowy, and partly cloudy. The daily measured quantity of liquid or liquid-equivalent precipitation. Fog occurrence is primarily limited to the winter months at Boise and the Treasure Valley. Tools Environment. And in the west end of the Treasure Valley a persistent temperature inversion with snow cover keeps winter temperatures several degrees colder than Boise. Subscribe to our newsletter. 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. Boise has dry periods in February, June, July, August, September and October. May Jun. Sorry, the location you searched for was not found. 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. Sunrise & Sunset with Twilight and Daylight Saving Time in 2021 in Boise. During the afternoon hours, the east end of the valley heats up faster than the west end creating surface low pressure, which in turn creates a northwest wind. This famous national park of America is considered one of the 7 world wonders and is one to add to your bucket list. MERRA-2 Modern-Era Retrospective Analysis. The winter months are characterized by steady widespread precipitation while the warm season months have more spotty convective showers and thunderstorms. Mark Edward Dooley is facing those charges in Valley County, according to court records. Summer begins here at the end of June and ends in September. Boise's Seasonal Snow Depths Some valley locations received more snow than usual. A climate graph showing rainfall, temperatures and normals. HistoricalData More Climate Data Boise. July is the warmest month, with an average high-temperature of 87.8F (31C) and an average low-temperature of 60.6F (15.9C). This is due to the overall dryness to the air and the higher elevation. 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. (1864-1939), Boise Airport Total Monthly & Yearly Precipitation Boise averages around 12-13 inches of rainfall each year, which is about of the national average at 38 inches. Normally, milder temperatures are common in the Valley in winter often resulting in rain instead of snow. Warning: Javascript must be enabled to use all the features on this page! A record-high number of events (more than 2 per year) occurred during the 19951999 period. On this website you can find historical weather averages for many cities in the United States of America. Sun & Moon. 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. Endangered Stations in Idaho, Customize table to display other current-condition parameters. Average annual temperature is 5 degrees warmer than cities at the same latitude east of the Rockies. PRECIPITATION: National Resources Defense Council, New York, NY. NOAA National Centers for Environmental Information (NCEI). Rain falls for 4.5 days and accumulates 0.2" (5mm) of . 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. A cold frontal passage. The month with the most days of rain alone in Boise is November, with an average of 6.7 days. Freezing Precipitation is a rare event at Boise and the Treasure Valley due to the relative deepness of the Snake River Valley (about 2000 feet). The unofficial climatological information presented on this page is for your convenience only. Boise's Consecutive Days of 100 degrees or Warmer Houston, TX 69 F Cloudy. See all locations in Idaho. Abbreviations. The rainy period of the year lasts for 9.1 months, from September 18 to June 20, with a sliding 31-day rainfall of at least 0.5 inches. Rainfall In February, the rain falls for 11.7 days. National Weather Service Aug. The perceived humidity level in Boise, as measured by the percentage of time in which the humidity comfort level is muggy, oppressive, or miserable, does not vary significantly over the course of the year, remaining a virtually constant 0% throughout. The mountain ranges both to the north and southwest of the valley act to channel winds through the valley in both the northwest and southeast directions. *. The month with the least rain in Boise is July, with an average rainfall of 0.2 inches. Nearly five hundred divers and snorkelers enjoyed music between the coral reef and fish. Oklahoma Monthly Climate Summary 4 DECEMBER 2022 PERCENT OF NORMAL PRECIPITATION The panhandle and northwestern Oklahoma received between 0% and 35% of normal rainfall with Beaver receiving the most at 35%. National Centers for Environmental Information, Asheville, NC, accessed May 7, In Boise, the month that is graced with the most daily hours of sunshine is July. The elevation difference between these valley endpoints is 850 feet. 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. Local sources of surface water are the Boise River meandering through the city and the Snake River 20 miles to the south. 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