The Seattle area has very moderate weather historically, neither cold nor hot. Weather patterns are changing here though. A good example occurred in June of this year. I was staying in Woodinville, a small city near Seattle, at the time. I took screenshots of my weather app on the day leading to it and on that day.
At least it never reached 109!
I hope this is a once in a lifetime experience for Seattle area which does not for the most part have air-conditioning but I suspect it isn’t. Hopefully it’s at least over for this year. But that may not be the case either.