A 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. Widespread fatalities occurred due to the heat (123 in total), as many were without air-conditioning, as well as an increase in the number of drownings. Widespread closures and postponements of businesses and events also occurred. Multnomah County had the largest number of fatalities in the state with 73 deaths directly related to the heat.

Excessive Heat in SOUTHERN WILLAMETTE VALLEY, OREGON
From 26-JUN-21 12:00:00 to 29-JUN-21 18:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

There were two consecutive days with maximum temperatures greater than 100 degrees. The hottest day was June 27 where temperatures in the area peaked around 112 degrees. Record breaking temperatures up to 111 degrees F in Eugene, OR. There were one heat related deaths reported.

Excessive Heat in NORTHERN OREGON COAST, OREGON
From 26-JUN-21 12:00:00 to 27-JUN-21 18:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Record breaking temperatures up to 101 degrees F in Astoria, OR.

Excessive Heat in WESTERN COLUMBIA RIVER GORGE, OREGON
From 26-JUN-21 10:00:00 to 29-JUN-21 18:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Very hot temperatures. There were three days with maximum temperatures greater than 100 degrees measured at several stations. The hottest day was on June 28 where temperatures peaked around 112 degrees.  The minimum temperatures were warm as well with nighttime temperatures in the 70s on June 27 and June 28.

Excessive Heat in COAST RANGE OF NW OREGON, OREGON
From 26-JUN-21 10:00:00 to 28-JUN-21 18:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Very hot temperatures. There were three days with maximum temperatures greater than 100 degrees measured at several stations. The hottest day was on June 28 where temperatures peaked around 111 degrees. The minimum temperatures were warm as well with nighttime temperatures in the 70s on June 27 and June 28.

Excessive Heat in CASCADE FOOTHILLS IN LANE COUNTY, OREGON
From 26-JUN-21 12:00:00 to 28-JUN-21 16:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Very hot temperatures. There were three days with maximum temperatures greater than 95 degrees measured at several stations, and two consecutive days with temperatures greater than 100 degrees. Maximum temperatures peaked between 106 and 109 degrees on June 27 and June 28.

Excessive Heat in CENTRAL COLUMBIA RIVER GORGE, OREGON
From 26-JUN-21 12:00:00 to 29-JUN-21 18:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Temperatures across the area reached into the 100s and lower 110s over a three day period. This lead to many people seeking locations to cool off. A young girl drowned in the Hood River on Wednesday, June 30.

Excessive Heat in CENTRAL COAST RANGE OF W OREGON, OREGON
From 26-JUN-21 10:00:00 to 28-JUN-21 18:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Very hot temperatures. There were three consecutive days with maximum temperatures greater than 95 degrees measured at several stations, with two consecutive days greater than100 degrees . The hottest day was on June 27 where temperatures peaked around 109 degrees.

Excessive Heat in NORTH OREGON CASCADES FOOTHILLS, OREGON
From 26-JUN-21 10:00:00 to 28-JUN-21 20:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Very hot temperatures. There were three consecutive days with maximum temperatures greater than 100 degrees measured at several stations. The hottest day was on June 28 where temperatures peaked around 112 degrees. The minimum temperatures were warm as well with nighttime temperatures in the 70s on June 27 and June 28. Two heat related deaths were reported.

Excessive Heat in CENTRAL OREGON COAST, OREGON
From 26-JUN-21 12:00:00 to 27-JUN-21 18:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Temperatures across the area reached into the 90s. This led to many people seeking locations to cool off. A middle-aged woman drowned on Monday, June 28.

Excessive Heat in LOWER COLUMBIA, OREGON
From 26-JUN-21 12:00:00 to 29-JUN-21 18:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Record breaking temperatures for 3 days in a row. Scappoose (KSPB) recorded high temperatures of 107, 112, and 116 F. Two heat related deaths were reported.

Excessive Heat in GREATER  PORTLAND METRO AREA, OREGON
From 26-JUN-21 12:00:00 to 29-JUN-21 18:00:00 (PST-8)
Property damage: 50.00K
Crop damage: 50.00K
Reported by: ASOS

Record breaking temperatures for 3 days in a row. Portland International recorded high temperatures of 108, 112, and 116 F (breaking its previous all time record of 107), and low temperatures of 70, 73, and 75 F. The Oregon State Police and Oregon Medical Examiner reported 67 deaths in Multnomah County from the heat, but it is suspected this fatality count is closer to 71. There were also reports of roads buckling due to heat. Cooling shelters were opened and many businesses closed and events postponed.

Excessive Heat in CENTRAL WILLAMETTE VALLEY, OREGON
From 26-JUN-21 12:00:00 to 29-JUN-21 18:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Temperatures across the area warmed into the 100s to mid 110s over a three day period. Record breaking temperatures up to 117 degrees were recorded in Salem, OR. A total of 18 heat related deaths were reported, including two middle aged men who drowned in the Willamette River on Saturday, June 26.