Today will be very warm west of the Cascades. With offshore flow this morning and southerly flow this afternoon, temperatures will rise to the mid-60s in many locations, and at some upper 60s, approaching or reaching daily records. Probcast, the statistical package that works with ensemble forecasts (www.probcast.com), is very good at high temperatures under full sun...and here is the prediction for max temps today:
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Note the cooler temps on the upslope (eastern) side of the Cascades. Another thing that is helpful is that the sun is much stronger now (equivalent to the middle-end of September!). And only some scattered high clouds to intercept the solar radiation.
Tomorrow things will go downhill...so today is the day..