Daily record high temperature in the U.S. during the 2021 heatwave, by station

The Dallesport Airport weather station in Washington state recorded the highest daily temperature in the U.S. Pacific Northwest region during the 2021 heatwave. This weather station reached record highs two days straight, on June 27 and June 28, at 115 and 118 degrees Fahrenheit, or some 46.1 and 47.8 degrees Celsius, respectively. Oregon topped off the ranking of leading five record highs by weather station, at 117 degrees Fahrenheit (some 47.2 degrees Celsius). These records were between two degrees and 17 degrees higher than previous records, with the Arlington, Oregon weather station having had the longest-standing previous daily record high.