The warmest day so far this year in Seattle has been 77 degrees back on May 6 but the record high for Wednesday is 92 degrees back in 1983, so that record is safe.
A dynamic weather setup will bring all kinds of interesting weather Wednesday into Thursday, with a sharp and sudden warmup by Wednesday afternoon quickly tempered by breezes racing in off the Pacific Ocean by late afternoon, dropping the temperatures rapidly with even a shot of rain by Thursday morning.
But for tonight, it will be mainly clear and nice with temperatures by morning down in the 40s to low 50s.
From west to east, temperatures will be warmer and warmer on Wednesday with highs at the Pacific beaches only in the upper 50s to mid 60s, with Port Angeles and the northern islands getting into the upper 60s to mid 70s, with 80s around the Sound from Everett south. The warmest spots will be the Cascade foothills and valleys with highs in the mid to possibly upper 80s before the sharp cooldown.
By Wednesday evening, temperatures will be rapidly cooling areawide, with breezy conditions near the water and windy east of the Cascades into Thursday morning. Rain showers will move through to start Thursday with some sunshine later in the day. Highs will only be in the 60s Thursday with morning rainfall totals of a tenth to a quarter-inch.
Friday will be warmer and nice with highs in the 70s. For the Waterfront 5k in Seattle early Saturday, weather should cooperate with clouds and sun. Highs Saturday will be in the low 70s in Seattle with the chance for a few light rain showers late Saturday through early Sunday but rainfall amounts should be pretty light. Sunday will be cooler with highs back in the 60s.
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