Record-breaking heat wave scorches western WA; heat advisory in effect until Tuesday

SEATTLE — Many western Washington cities hit record highsSunday, including SeaTac at 93 degrees and Olympia at 97, and Monday could be even hotter.

The region's heat wave, which began Friday, warranted a heat advisory to be issued from noon Friday until 10 p.m. Tuesday.

Temperatures will only slowly ease next week, dropping into the upper to middle 80s around the metro area by Tuesday and Wednesday. While a relief from the 90s, those highs are still going to register about 10 degrees above normal.

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Further cooling takes shape later in the week thanks to the return of onshore flow, which will encourage the sea breeze to make a comeback in western Washington. Even so, we'll likely stay in the low 80s near Seattle. In the meantime, get ready for some serious heat.

According to the National Weather Service, the low temp through 4:30 a.m. Monday in Everett was 73 degrees. In 76 years at the Paine Field location, a low temp at or above 70 has occurred twice, NWS said.

The NWS said more Pacific Northwest records are in jeopardy Monday.