A period of augmented westerly momentum/NPAC jet climaxes in a couple of weeks. Overall it’s not a favorable subseasonal state for prolonged heat in the PNW (though heat spikes are certainly doable). Later in June and/or into July could begin a more consistent hot/dry theme, although I have a suspicion this summer could buck modern niño climo and trend hotter/drier thru July into August (not 100% confident though).

^You should always make sure to fix your base period. Most analogs are outside of 91-20. Here is just July.. nothing strong.. My map uses negative side as negative values, and positive side as positive values

Here's the composite precip anomalies for all developing moderate or stronger first year Nino Julys since 1950. Definitely a wetter signal for WA than OR.

June-July is not dry in the NW in all ENSO analogs 1948-2020: Positive state: CPC new 3-4 Week thinks it goes dry anyway

It's a fairly small sample size for ginormo Niños and of course our temp baseline is much higher now, but in both 1982 and 2015 we saw pretty prolonged heat episodes in early to mid June but no major heat beforehand. In both cases we also saw very dry Mays like this year. May 1997 was really warm and dry early on before flipping to wet and active at the end. Summer 1997 stayed temperate and humid throughout, probably the stickiest summer I've seen here. All three years gave us some pretty decent plumes of monsoonal moisture. The subtropical Eastern Pacific is probably going to be chomping at the bit by late July and rearing to go. We should see some pretty noteworthy storms and precip anomalies across the West in August and September. All three of 1982, 1997, and 2015 pulled that off and had extremely active EPAC hurricane seasons. With the warmer SSTAs now it should be bananas.