In Seattle, which was one of the cities affected by this event (also on the West side of the Cascade mountain range), the previous days with triple digit temper

In Seattle, which was one of the cities affected by this event (also on the West side of the Cascade mountain range), the previous days with triple digit temperatures occurred in 2009, 1994, and 1941. The earlier parts of this season were actually cooler than usual, and drier than usual. You would often see posts about having the coolest day in X years from weather posts (example: https://twitter.com/NWSSeattle/status/1401722154157187073 https://twitter.com/NWSSeattle/status/1401722154157187073).