Seattle, Washington Weather Alert: Clear Skies Now, Sharp Drop to Low 40s Tonight Across Puget Sound

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40 degrees cool
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Washington – Bright sunshine is breaking through Seattle’s skyline this midday, quickly warming damp streets while a sharp temperature drop looms after sunset.

According to the National Weather Service, mostly sunny skies will push temperatures to near 69°F today, with light northwest winds developing this afternoon. Clear conditions continue into tonight, but temperatures fall quickly into the low 40s, creating a crisp, chilly feel across King County.

Across downtown Seattle, Bellevue, and Everett, the dry air and clear skies will allow rapid cooling after sunset. Early risers could notice colder surfaces on bridges and overpasses, especially along I-5 and SR-520. While no precipitation is expected, the temperature swing may catch commuters off guard. Keep a jacket handy and plan for colder starts through midweek.

Tuesday brings a cooler shift with highs near 55°F under partly to mostly sunny skies. By Wednesday, sunshine returns more fully, but highs stay near 58°F, reinforcing a mild but slightly cooler pattern. Mornings remain brisk, with lows hovering near 40°F.

A warming trend builds into Thursday, with highs climbing to around 62°F under sunny skies. Dry conditions hold through the end of the workweek, offering a stretch of stable spring weather across western Washington.

Looking ahead, changes arrive by Saturday as clouds increase and a chance of rain develops, potentially impacting weekend plans with wet roads and reduced visibility.

Enjoy the sunshine now, but prepare for those colder mornings. Are you feeling that temperature drop yet where you are?

Five Day Forecast for Seattle, WA

  • Today: Mostly sunny, high near 69°F
  • Tonight: Increasing clouds, low around 43°F
  • Tuesday: Mostly cloudy early, then gradual clearing, high near 55°F
  • Wednesday: Sunny, high near 58°F
  • Thursday: Sunny, high near 62°F