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Western Washington Forecast

We pull the weekend heat and haze into Monday before onshore flow returns Tuesday to bring cooling and some shower chances midweek. Next weekend looks very pleasant.


Monday will be a repeat of Sunday with toasty temps, sunny skies and light wildfire smoke favoring areas south of Seattle. The warmest temperatures will occur for South Sound. Highs will range from the mid-80s for Everett north with near 90 to lower 90s from Seattle south. If Seattle reaches 90-degrees today, it'll be the 10th time of the year, making for the third most in a calendar year. Light wildfire smoke is expected in the Cascade foothills and Puget Sound again, which could drop the air quality to moderate, especially in the foothills.


Summer temperatures stick around into Monday with another day of near 90 to lower 90s for the south Sound and the Cascade foothills. Monday could be the warmest day of this heat event for some areas before cooler air arrives Tuesday with the winds flipping around to onshore. This will significantly drop temperatures for the Pacific coastal beaches and the Olympic Peninsula and shave a few degrees off the highs for Puget Sound by Tuesday. In fact, the onshore winds already knock highs down this afternoon for the Pacific coastal beaches.

The National Weather Service issued a Heat Advisory for much of western Washington through 9 p.m. tonight. This heat won't be as hot or as prolonged as last week's heat wave. An Excessive Heat Warning is in place from noon Monday until Tuesday night for portions of eastern Washington, where temps could push close to 110° Monday and Tuesday.

The next weather system brings a chance for a few showers on Wednesday and drops temperatures into the 70s for highs. There could even be an isolated storm early Wednesday. We stay in the 70s by dry out on Thursday with temperatures climbing to around 80 by Friday.

It appears nice weather sticks around for the weekend with seasonal temperatures and sunny skies.

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