Excessive Heat in Washington

Events

97

Deaths

17

Injuries

2

Damage

$2,000

• Excessive Heat in Washington, June 26 to 29, 20215 deaths · 5 eventsA high pressure heat dome over the region led to stretch of extreme heat, shattering records from June 26 through June 29.
• Excessive Heat in Washington, July 12 to 18, 20243 deaths · 1 eventAn upper level ridge of high pressure over the Four Corners region and a dry westerly flow over the PacNW resulted in dry and hot conditions developing across the region. This resulted in moderate to major HeatRisk being observed over the region.
• Excessive Heat in Washington, June 25 to 30, 20212 deaths · 7 eventsA strong upper level ridge of high pressure and a surface thermal trough brought several days of record high temperatures across the PacNW, with many locations in the lower and higher elevations experiencing extreme heat risk during this event.
• Excessive Heat in Washington, July 27 to 30, 20092 deaths · 5 eventsStrong high pressure aloft led to a major heat event for western Washington. The average temperature for July 2009 at Seattle-Tacoma airport was 69.5 degrees, the warmest July on record, and tying record for the warmest July on record in Seattle.
• Excessive Heat in Washington, July 1, 20141 death · 1 injured · 2 eventsAn upper level ridge combined with a surface thermal trough and low level offshore winds resulted in a hot day across Southwest Washington where inland temperatures peaked in the upper 90s inland and the upper 80s along the coast.
• Excessive Heat in Washington, June 26 to 28, 20151 death · 1 injured · 1 eventA strong upper level ridge of high pressure resulted in hot temperatures across Southwest Washington. Afternoon temperatures peaked in the low to mid 90s which are around 20 degrees warmer than the seasonal normals.
• Excessive Heat in Washington, July 25 to 26, 20101 death · 2 eventsTemperatures topped 100 degrees for two successive days in Hanford, Pasco, Prosser, Basin City, Kennewick, Eltopia, Edna, Roosevelt, College Place, Whitman Mission, and Walla Walla. An 86 year old Walla Walla man died of heat stroke in his home.
• Excessive Heat in Washington, August 18 to 20, 20161 death · 1 eventRidge of high pressure brought excessively hot temperatures to Southwest Washington.
• Excessive Heat in Washington, July 5 to 10, 20241 death · 1 eventAn upper level ridge of high pressure persisted over the PacNW for nearly a week. The upper ridge resulted in hot temperatures developing across the region, with widespread moderate to major HeatRisk.
• Excessive Heat in Washington, July 26 to 31, 202219 eventsA strong ridge of high pressure built across the Pacific Northwest at the end of July, making for well-above normal temperatures for most of Western Washington.
• Excessive Heat and Heat in Washington, October 13 to 16, 202212 eventsUpper-level ridging over the area brought unseasonably warm and dry conditions over a extended period of time.
• Excessive Heat in Washington, June 26 to 30, 202110 eventsA strong dome of hot high pressure over the Inland Northwest pushed afternoon high temperatures into record territory. In late June 2021, a long-lived heatwave broke many daily, monthly, and all time maximum high and low temperature records at several stations.
• Excessive Heat in Washington, August 15 to 17, 20086 eventsAn upper level ridge and dry air brought excessive heat into eastern Washington. Some locations which experienced multiple days of at least 100 degree temperatures included Dallesport (107, 109, 102), Ellensburg (102, 105, 106), Hanford (104, 106, 111), Pasco (103, 104, 103),…
• Excessive Heat in Washington, July 25 to 31, 20226 eventsA potent upper level ridge of high pressure moved over the region and persisted through the end of July and the first of August.
• Excessive Heat in Washington, June 29 to 30, 20084 eventsAn upper level ridge and thermal trough across the Pacific Northwest produced temperatures above 100 degrees for two consecutive days.
• Excessive Heat in Washington, July 1, 20214 eventsA strong upper level ridge of high pressure and a surface thermal trough brought several days of record high temperatures across the PacNW, with many locations in the lower and higher elevations experiencing extreme heat risk during this event.
• Excessive Heat in Washington, August 11 to 12, 20214 eventsHot weather began to develop August 9, peaking August 11-12, but temperatures continued above normal into the weekend. Peak afternoon temperatures of 100 to 105 degrees drove people to seek relief in or near bodies of water.
• Excessive Heat in Washington, August 17 to 22, 20224 eventsUpper level ridging and persistent surface high pressure in the Columbia Basin resulted in several areas reaching or exceeding critical heat risk thresholds during this period, with some mountain sites also seeing consecutive days of 95 degrees or greater temperatures.
• Excessive Heat in Washington, August 1, 20223 eventsA potent upper level ridge of high pressure moved over the region and persisted through the end of July and the first of August.
• Excessive Heat in Washington, August 8 to 9, 20223 eventsHigh pressure from the four corners region extended northward into the Pacific Northwest, which resulted in well above normal temperatures across the region for several days.
• Excessive Heat and Heat in Washington, August 18, 20222 eventsA period of hot weather brought very warm temperatures to the interior of Western Washington, helping to set a few record maximum temperatures.
• Excessive Heat in Washington, July 25, 20222 eventsThe final week of July a heat wave struck the Inland NW with an abundance of sunshine each day. High temperatures warmed into the 90s from the 24th through the 26th and|then upper 90s and triple digits from the 27th through the 31st.
• Excessive Heat in Washington, August 24 to 25, 20221 eventUnder a progressive weather pattern, the eastern Columbia River Gorge was able to maintain hot afternoon temperatures during this period, resulting in exceeded heat risk thresholds on Aug. 24th and 25th.
• Excessive Heat in Washington, July 9, 2024$2,000 · 1 eventTemperatures across Eastern Washington ranged from 98 to 110. The heat caused roads to buckle in Whitman County near Rosalia on July 9.

Excessive Heat everywhereEvery kind of event in Washington

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24.