Excessive Heat in Oregon

Events

174

Deaths

167

Injuries

3

Damage

$100,000

• Excessive Heat in Oregon, June 26 to 29, 2021118 deaths · $100,000 · 12 eventsA high pressure heat dome over the region led to stretch of extreme heat, shattering records from June 26 through June 29. All time max temperatures were broken by 8 to 10 degrees.
• Excessive Heat in Oregon, July 25 to 30, 202216 deaths · 2 eventsA prolonged heatwave developed as strong high pressure formed over the Pacific Northwest. This event was most notable by it's duration. High temperatures around 100 degrees persisted for a week for much of the northwest Oregon and southwest Washington, except the coast.
• Excessive Heat in Oregon, August 11 to 14, 20216 deaths · 13 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 Oregon, August 14 to 16, 20235 deaths · 1 eventHigh pressure brought extreme heat and heat related impacts to the area. Daily temperature records were set for multiple locations, with the hottest day being Monday August 14.
• Excessive Heat in Oregon, July 4 to 13, 20244 deaths · 11 eventsA persistent ridge over the western states with an associated thermal trough extending from northern California into southern Oregon brought a long-duration heat wave.
• Excessive Heat in Oregon, June 13 to 15, 20264 deaths · 2 eventsAn upper-level ridge of high pressure built into Oregon June 13-15th leading to a multi-day heat event. Max temperatures were around 91 on June 13th, 94 on June 14th, and 97 on June 15th for the Portland metro area.
• Excessive Heat in Oregon, June 2 to 5, 20163 deaths · 2 eventsUnseasonably strong ridge of high pressure resulted in a period of early-season hot temperatures across Northwest Oregon.
• Excessive Heat in Oregon, June 26 to 28, 20152 deaths · 2 injured · 2 eventsA strong upper level ridge of high pressure resulted in hot temperatures across Northwest Oregon. Afternoon temperatures peaked in the low 90s to the low 100s which are around 20 degrees warmer than the seasonal normals.
• Excessive Heat in Oregon, June 25 to 30, 20212 deaths · 13 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 Oregon, August 1 to 4, 20172 deaths · 2 eventsA ridge of high pressure aloft with a surface thermal trough over the area lead to record-breaking high temperatures across NW Oregon.
• Excessive Heat in Oregon, August 10 to 12, 20252 deaths · 1 eventA robust area of high pressure over the eastern Pacific shifted towards Oregon August 10th, remaining overhead on the 11th before finally retrograding further west late on August 12th.
• Excessive Heat in Oregon, August 22 to 24, 20252 deaths · 1 eventAn upper level ridge of high pressure centered over the Four Corners region shifted northward into the Pacific Northwest leading to well above normal temperatures through this period.
• Excessive Heat in Oregon, July 1, 20141 death · 1 injured · 1 eventAn upper level ridge combined with a surface thermal trough and low level offshore winds resulted in a hot day across Northwest Oregon where inland temperatures peaked in the upper 90s inland and the upper 80s along the coast.
• Excessive Heat in Oregon, July 25 to 31, 202211 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 Oregon, August 15 to 17, 200810 eventsAn upper level ridge and dry air brought excessive heat into eastern Oregon. Locations which experienced multiple days of at least 100 degree temperatures included Hermiston (102, 105, 107), Pendleton (100, 107, 108), Redmond (106, 102), The Dalles (107, 109, 102), Moro (100,…
• Excessive Heat in Oregon, June 26 to 30, 20218 eventsA historic heat wave affected the Pacific Northwest during this interval. It was caused by a strong upper level ridge that created dry and stable conditions over the area with strong subsidence.
• Excessive Heat in Oregon, August 13 to 17, 20238 eventsStrong persistent ridging over the Pacific Northwest supported a prolonged heat wave over inland portions of southwest Oregon.
• Excessive Heat in Oregon, August 1 to 4, 20177 eventsStrong high pressure brought record breaking heat to many parts of southwest and south central Oregon.
• Excessive Heat in Oregon, August 16 to 22, 20227 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 Oregon, August 10 to 14, 20216 eventsA strong ridge supported a heat wave over inland areas of southwest and south central Oregon during this interval.
• Excessive Heat in Oregon, August 7 to 10, 20226 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 in Oregon, July 25 to 31, 20226 eventsStrong persistent ridging over the Pacific Northwest supported a prolonged heat wave over inland portions of southwest and south central Oregon.
• Excessive Heat in Oregon, July 1 to 2, 20215 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 Oregon, August 14 to 17, 20204 eventsHigh pressure and a dry air mass supported very hot temperatures over inland areas during this interval. Minimum temperatures were quite warm as well. The heat was occasionally tempered by high clouds streaming over the area.
• Excessive Heat in Oregon, June 29 to 30, 20083 eventsAn upper level ridge and thermal trough across the Pacific Northwest produced temperatures above 100 degrees for two consecutive days. Temperatures for the June 29 and 30, respectively, included Hermiston (100, 105), Pendleton (102, 101), and Pelton Dam (105, 101).

Excessive Heat everywhereEvery kind of event in Oregon

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.