7-Day Forecast 47.58°N 122.25°W (Text-Only)
NWS Forecast for: Mercer Island WA
Issued by: National Weather Service Seattle, WA
Last Update: 8:34 am PDT Jul 13, 2025


This Afternoon: Sunny, with a high near 83. North wind 6 to 8 mph.

Tonight: Partly cloudy, with a low around 61. Northeast wind 6 to 8 mph.

Monday: Mostly cloudy, then gradually becoming sunny, with a high near 76. Calm wind becoming northwest around 6 mph in the afternoon.

Monday Night: Mostly clear, with a low around 61. North northeast wind 5 to 7 mph.

Tuesday: Sunny, with a high near 83. North wind 5 to 9 mph.

Tuesday Night: Clear, with a low around 63.

Wednesday: Sunny, with a high near 88.

Wednesday Night: Mostly clear, with a low around 63.

Thursday: Sunny, with a high near 84.

Thursday Night: Mostly clear, with a low around 61.

Friday: Sunny, with a high near 80.

Friday Night: Partly cloudy, with a low around 59.

Saturday: Mostly sunny, with a high near 78.



Mercer Island WA
 47.58°N 122.25°W (Elev. 105 ft)

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