Washington State is having a hot weekend. I have been there twice but only during fall and winter. I find it hard to image the landscape there with such tropical temperatures.
This picture shows the projected deviation from historic temperatures (1981-2010) for Sunday afternoon local time:

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Along west Canada and north west U.S. the temperature will be up to 24°F = 13°C hotter than it has historically been.
This next picture shows the projected absolute temperature in Fahrenheit for Sunday afternoon:

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The hottest point I see is 116°F which is equal to 46.6°C. Even with all its water Seattle will still heat up to 109°F which is a bit too cozy 42.7°C.
Both pictures are from Tropical Tidbits.
These and future forecasts can be seen at that site by selecting:
- Forecast Models – Thermodynamics – 2m Temp anomaly – Regions set to North America for the first picture
- Forecast Models – Thermodynamics – 2m Temperature (shaded) – Regions set to North West U.S. for the second picture
The forecast models run every 6 hours. The one above was created today, June 26, at 12:00 UTC. The selected forecast hour is 36 witch is for Monday, June 28, 00:00 UTC equal to Sunday, June 27 5:00pm in Seattle.
The western U.S. is not only getting too hot but also too dry:

Source : U.S. Drought Monitor – bigger
This increases not only the danger of large scale wildfires but also the blackout risk.
Last year California saw the first population decline ever. During the next years many more people are likely to move out of the state. It that trend strengthens it could bring some interesting social-economic changes to the whole of the U.S.