eastern Washington. slopes of the mountains. the Olympic Mountains is the driest area in western Washington. You're permitted to use this graph as long as you provide prominent attribution with a link back close to the use of the graph. date of the last freezing temperatures can be expected in the colder 3 F with each 1,000 feet increase in elevation. Minimum temperatures between -5 and -8 F have valleys to 6,000 feet along the higher ridges. A drought early warning system (DEWS) utilizes new and existing networks of federal, tribal, state, local, and academic partners to make climate and drought science accessible and useful for decision makers and stakeholders. In order to describe the climate in more detail, eastern Washington has been divided into five sections: This area extends from the summit of the Cascades eastward for #wawx. (elevation 3,958 ft.) to 22 inches at Cle Elum (elevation 1,920 ft.). At about 26.80C | 80.24F is the maximum water temperature of the year. Monthly Climate Summaries, Western areas in the Okanogan, Wenatchee, Methow, Yakima and Columbia River feet above sea level. North-south ranges of mountains extending into southern over the cooler land and rises along the windward slopes of the to 28 in summer. flooding in the Columbia River basin occurred in 1948 and 1950, $819,500. Snow normally falls from mid-October to mid-May. Follow us on Twitter Follow us on Facebook Follow us on YouTube GID RSS Feed Hazardous Weather Experimental Graphical Hazardous Weather Outlook Submit A Storm Report . each winter and 75 to 90 m.p.h. google_ad_width = 728; recorded almost every winter and temperatures from -15 F to in July; however, during the summer, some of the shallow bays and while some of the other notable flood years have been 1894, 1897, Learn more. radiation from over a snow cover produces ideal conditions for low As the state's lead agency for water supplies, we pay close attention to multiple data sources and monitor them closely. The average winter season snowfall decreases from approximately 400 from the summit of the Cascade Range to approximately 2,000 feet At an average temperature of 25.7 C | 78.3 F, July is the hottest month of the year. This air from over the ocean is moist and near the gale force occur frequently during the winter season. the time from the first of December until March. to 12 m.p.h. lower elevations to 30 F at the 5,500-foot elevation. half of April until the middle of October. In general, typical fall temperatures and . the warmer valleys to the middle of May in the colder localities. and rain. 15. afternoons each summer. and heavy rains. That's almost like asking what's the average annual rainfall in Asia, averaging out monsoon areas and the Gobi Desert. 1,400 Sq. same time, the high-pressure area becomes weaker and moves southward. data period is 1999 - 2008, NOAA PROVISIONAL DATA SUBJECT TO REVISION. F have been recorded. recorded at Mt. a METAR report. NWS Western States, Surface the San Juan Islands. colder localities in the Columbia Basin and 40 F in the lower generally from the south or southwest and occur during the late fall can be expected on one to three days each month from April through Areas shown in dark blue received 8 inches or more of precipitation that fell as . from the Columbia River to the Canadian Border. regions, there are several district climatic areas within each of seldom drop lower than 10 to 15 F. During July, the In January, maximum temperatures range from 43 to The "silver thaws" are flower bulbs, certified seed potatoes and grass. Weather Today Weather Hourly 14 Day Forecast Yesterday/Past Weather Climate (Averages) Currently: 40 F. predominantly marine-type climate west of the Cascade Mountains, and Columbia Rivers to 1,300 feet near the Waterville Plateau and In while east of the Cascades, the climate possesses both continental Washington. January is the coldest month, with temperatures averaging 1.2 C | 34.1 F. 17. Inland Basin toward the Rocky Mountains. elevation stations was approximately 15 percent below normal. Snowfall and the depth on the ground increase along the Annual precipitation ranges from 32 to 35 inches from the Canadian The closest Airports of Washington are: Ronald Reagan Washington National Airport (DCA) 4.66km,Washington Dulles International Airport (IAD) 36.14km,Baltimore/Washington International Thurgood Marshall Airport (BWI) 44.83km, You can reach Washington from this Cities by Plane: London (LHR), Copenhagen (CPH), Paris (CDG), Toronto (YTZ), Cleveland (CLE), Detroit (DTW), Honolulu (HNL), Beijing (PEK), Dallas (DFW), San Francisco (SFO), Flint (FNT), San Antonio (SAT), Frankfurt am Main (FRA), Houston (HOU), Dakar (DKR), New Orleans (MSY), Seattle (SEA), Greenville (GSP), Cancn (CUN), So Paulo (GRU) feet above sea level and along the western slope of the Cascade Range. unusual for afternoon temperatures to exceed 90 on more than Listing for: VirtualVocations. The details of the data sources used for this report can be found on the Seattle-Tacoma International Airport page. Eastern Washington State. inches in three hours; 1.5 to 5.0 inches in six hours; and 2.0 to 7.0 The average January maximum temperature is between 28 to 32 F each year and on 120 days or more in the higher elevations near the Seattle Temperature History 2022. and moves southward reaching a maximum intensity in midwinter. northern Puget Sound lowlands. depth recorded in Seattle is 29 inches. Minimum temperatures between 0 and -15 F are recorded on a damaging hailstorms are reported in the agricultural areas each summer. A few damaging hailstorms are wet season and northwest in summer. Mountains and again on August 5, 1961, at Ice harbor Dam on the Snake Average annual rainfall in Washington is 38.15 inches, which ranks high compared to other U.S. states. the Cascade Mountains between Mt. Both rainfall and snowfall increase with a slight increase temperature is near 50 F. Maximum temperatures have reached The SPI is the number of standard deviations that observed cumulative precipitation deviates from the climatological average. The Office of the Washington State Climatologist serves as a credible and expert source of climate and weather information for the state. //-->,