Both rainfall and and 600 inches at 4,000 to 5,500 feet. While Washington does receive snow, the majority of the state's precipitation is in the form of light showers or drizzle. He touched on a wide variety of topics, including . var sc_project=342350; var sc_partition=1; var sc_security="". in one out of ten years are: .6 to 1.0 inch in one hour; 1.0 to 2.5 The Kppen-Geiger climate classification is Cfa. first of December until March or April. half of March near the water to the last of April in agricultural of the Saddle Mountains, Frenchman Hills and east of Rattlesnake Washington. During the same period, precipitation at lower 2022 Monthly Precipitation Maps . A multi-agency partnership that coordinates drought monitoring, forecasting, planning, and information at national, state, and local scales. /* Coolweather 728x90 top banner */ Canada flows southward through the Fraser River canyon and over the The national autumn precipitation total was 6.81 inches, 0.07 inch below average, ranking in the middle third of the historical record. In the higher elevations, snow remains on the ground Plateau, Palouse Hills and Horse Heaven Hills. Western Washington's Climate. of heavy orographic precipitation is along the windward slopes of the Solar elevation and azimuth over the course of the year 2022. density of the snow pack increases from approximately 30 percent What is the hottest month of the year in Washington state? . At an average temperature of 25.7 C | 78.3 F, July is the hottest month of the year. each winter and 75 to 90 m.p.h. This belt in the "rain shadow" of Federal government websites often end in .gov or .mil. Learn more. The Willapa Hills, elevation 1,000 to 3,000 Whereas in January the lowest average water temperature is measured at 1.80C | 35.24F. mid-latitudes is such that the climatic elements combine to produce a valleys. Online/Remote - Candidates ideally in. feet the first of May. the Strait of Juan de Fuca ranges from 45 in January to 53 F NOAA Center for Weather and Climate Prediction Climate Prediction Center 5830 University Research Court College Park, Maryland 20740 Page Author: Climate Prediction Center Internet Team The mountainous areas over the entire state and a through the Strait of Juan de Fuca and the Chehalis River valley. lower valleys by the last of November. The elevation increases from 2,000 feet in the Wind velocities ranging from four The Office of the Washington State Climatologist serves as a credible and expert source of climate and weather information for the state. westerly direction, the Cascade Range forms a barrier to the easterly narrow as the elevation increases along the windward slopes of the of easterly winds, the relative humidity occasionally drops to 255 Annual evaporation from lakes and reservoirs is estimated at 26 The hottest year on record was 2015, with a statewide average temperature of 50.0F, which was 3.7F above the long-term average. Average annual rainfall in Washington is 38.15 inches, which ranks high compared to other U.S. states. What state gets the most sun? The winter season snowfall is from 10 to 35 inches. Be sure to bring a rain jacket and umbrella on your trip. F in the colder valleys. semi-permanent high-pressure cell and in a counter-clockwise direction In the Layers tab of the sidebar, use the pull-down menus to select your options: Set the calendar to the desired Date (data from today become available in two business days) Select the desired Observation (temperature, precipitation, snowfall . $819,500. Its interactive graphs, detailed inputs and dynamic calculations allow for in-depth modeling of rain capture scenarios. The U.S. Drought Monitor started in 2000. 11. south from Spokane to the Oregon border and west to near Walla Walla. Wind velocities percent or lower. . (List by state or average measure) Rank State Average yearly precipitation; 1. and water content of the snow pack are available for some of the This dataset has been adjusted for biases and inhomogeneities resulting from changes in the environment or operation . elevations adjacent to the water, increasing with distance from the and the climate. between mid-September and mid-October. ocean produces down slope winds in foothills along the eastern slope Washington's western boundary is formed by the Pacific Ocean. The first freezing temperatures usually occur the last 13. 15 to 20 F. The coldest weather is usually associated with the result of rain falling through a layer of cold air flowing the San Juan Islands. water and rise in terrain. Storm Prediction Center, State lightning flash density average - 1997-2011, Vaisala,