Washington does have hot areas in the eastern part of the state. 100 degree days are common in those areas. That is like the east central part of Oregon, Bend and east. I have seen 100 degree days in those areas while trying to fish. Fortunately the water is all ways cold so you just wade a little deeper and stay in the river longer under a big brimmed hat and a lot of sun blocker.
I figured the picture of the Blue Heron came from the NW.