MYNORTHWEST WEATHER

WEATHER: Here’s your last taste of summer before settling into fall

Sep 17, 2026, 7:43 AM

Seattle weather summer fall...

(Photo courtesy of KIRO 7)

(Photo courtesy of KIRO 7)

We’re off to another calm and cool start with light offshore wind. A few sheltered spots will see some patchy fog, but it will be more isolated than yesterday and should clear out quickly. Then we’ll turn sunny and warm, with highs reaching the upper 70s and a few spots potentially touching the low 80s.

The wind will shift to onshore later today, and that will change things tomorrow. Low clouds will return tomorrow morning and likely stick around for the next few mornings, keeping temperatures cooler. Highs will be right around where they typically are this time of year, in the low 70s.



The weekend looks nice, too. Saturday and Sunday will start with some morning clouds before sunshine breaks out during the afternoon. Highs will be around 70° both days.

We’ll start next week on the cooler side, with highs in the upper 60s. Then a weak system moves in Tuesday. There doesn’t appear to be much moisture with it right now, but it could be the first sign of a slightly more active pattern developing next week.

Nothing dramatic on the horizon yet, but it’s something we’ll be watching.

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