Seattle weather: Cooler, few showers and chance of mountain storms Saturday

Published August 22, 2026 4:00 AM PDT

Seattle weather will peak Tuesday with highs in the low to mid 80s before dry conditions continue through the work week. (FOX 13 Seattle)

Heading into the weekend, we will see cooler temperatures, a chance of showers for the Puget Sound and rumbles of thunder in the mountains. The timing of the showers starts early Saturday for the south sound and slowly moves northward into the afternoon and evening. Showers are looking to remain on the light side, unless you are right under a thunderstorm. Also, rain is looking more likely to fall into the afternoon for the north interior. Lightning chances increase as you go into both the Olympics and Cascades mountains, so that is where the main fire threat is.

Seattle weather will start Sunday with widespread morning clouds and a couple of showers before sunshine develops.

Seattle weather will become brighter Sunday afternoon as clouds break and showers taper. (FOX 13 Seattle)

What's next:

Saturday will be cooler as the upper level low swings onshore, bringing highs back down into the 70s. Winds will be a little breezy at times as the low moves through, making for gusty westerly winds through the cascade gaps. Highs will also remain hot for central Washington, staying in the mid 90s.

Today's Highs

Saturday will be cooler as the upper level low swings onshore, bringing highs back down into the 70s.  (FOX 13 Seattle)

Wildfire danger in WA

A Red Flag Warning is in effect through early Sunday for parts of Washington state due to lightning strikes, low relative humidity and gusty winds. Fire danger will be high, especially on Saturday because of the passing system bringing stronger wind gusts and new fire potential with thunderstorms.

Seattle weather will turn cooler, but fire danger will remain very high across Central and Eastern Washington.

Seattle weather could bring lightning and gusty winds over the Cascades that increase the risk of new and spreading fires. (FOX 13 Seattle)

Looking Ahead:

Showers and storms will decrease into early Sunday, with drier conditions for the rest of the weekend. We will start to warm up again on Tuesday with highs in the low 80s. There will be a slight chance of a passing shower by midweek with cooling conditions.

Seattle weather will turn cooler this weekend before sunshine and warmer temperatures return next week.

Seattle weather will peak Tuesday with highs in the low to mid 80s before dry conditions continue through the work week. (FOX 13 Seattle)

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The Source: Information in this story came from the FOX 13 Seattle Weather Team and the National Weather Service.

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