Seattle weather: Warm and sunny conditions for Thursday

Published September 17, 2026 4:00 AM PDT

A nice clear start to the day Thursday with plenty of sunshine into the afternoon. A few areas of morning patchy fog, but the skies will be clear by midday. Onshore flow returns late Thursday into Friday, so morning clouds return for Friday morning.

Sunshine Wednesday

A nice clear start to the day Thursday with plenty of sunshine into the afternoon. 

What's next:

High pressure continues to move over western Washington, keeping conditions warm and dry into Thursday. A thermal trough will also move inland throughout the day, which will bump highs a few degrees warmer. A low to our south will slowly shift inland for Friday, and the ridge will shift eastward. This pattern will cool our temperatures a few degrees through the weekend and bring a few more clouds into the forecast.

Big Picture

High pressure continues to move over western Washington, keeping conditions warm and dry into Thursday. 

Highs Thursday will be a few degrees warmer, with the warmest temperatures in the south sound reaching the low 80s.

Today's Highs

Highs Thursday will be a few degrees warmer, with the warmest temperatures in the south sound. 

Looking Ahead:

Looking into the weekend, we will see nice and mild temperatures with highs in the low 70s. Those conditions continue into the work week with a few more clouds and a slight chance of showers by the middle of the week.

Seattle Weather

A nice and mild weekend with highs in the low 70s. 

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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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