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Seattle weather: Clouds return overnight, skies remain dry

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FOX 13 Seattle
Weather
Published August 18, 2026 4:57 PM PDT
Published August 18, 2026 4:57 PM PDT
Seattle weather: Tuesday temperatures in the upper 70s, low 80s
Seattle weather: Tuesday temperatures in the upper 70s, low 80s

Seattle weather: Tuesday temperatures in the upper 70s, low 80s

A cloudy start to Tuesday with afternoon sunshine, and this pattern continues through this week. We will see the onshore flow keep temperatures in the upper 70s to low 80s.

The Brief

    • Onshore flow will bring overnight clouds that burn off quickly in the morning, accompanied by pleasant evening temperatures and continued dry conditions.
    • Western Washington has recorded no measurable rainfall so far this August, well below the monthly typical average of about one inch.
    • Warmer temperatures on Thursday and potential mountain storms on Friday will lead to elevated fire danger late in the week.

SEATTLE - Clouds will once again increase overnight as the onshore flow strengthens. While we will wake to mainly cloudy skies, they will burn off very quickly. Overnight lows will be pleasant, a nice evening to get outside for a walk then open up the windows to let in some refreshing air.

Forecast lows around Western Washington.

Comfortable night with lows in the mid to upper 50s.

Our skies will remain dry for the next few days. While we typically see about an inch of rainfall during the month of August, so far we have seen no measurable rain.

The dry stretch continues with no rain falling so far this month.

A typical August would at least bring about an inch of rain, but we haven't seen any rain so far.

No big changes are forecast for the next few days. We are forecast to warm up on Thursday. The toasty temps will lead to an increase in fire danger. A chance for mountain storms will keep fire danger high again on Friday.

The extended forecast for the Seattle metro area.

Day, mild days continue with a chance of showers by the weekend.

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The Source: Information in this story comes from weather models interpreted by the FOX 13 Seattle weather team.

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