I-90 weather conditions near Mercer Island, Washington
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Seasoned Weather Conditions
Current Weather Conditions
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7 day weather forecast
Current condition: Overcast 50°F 2025-04-29T04:30:00 
Overnight 2025-04-29, Chance Rain. A 40 percent chance of rain. Cloudy, with a low around 50. South wind around 5 mph.
Tuesday 2025-04-29, Chance Rain. A 50 percent chance of rain, mainly before 2pm. Mostly cloudy, with a high near 59. South wind around 6 mph becoming north in the afternoon.
Tuesday Night 2025-04-29, Mostly Cloudy. Mostly cloudy, with a low around 44. East northeast wind 6 to 8 mph.
Wednesday 2025-04-30, Mostly Sunny. Mostly sunny, with a high near 66. Northeast wind around 6 mph becoming light and variable.
Wednesday Night 2025-04-30, Mostly Clear. Mostly clear, with a low around 45. North northwest wind 5 to 7 mph becoming east northeast in the evening.
Thursday 2025-05-01, Sunny. Sunny, with a high near 75.
Thursday Night 2025-05-01, Clear. Clear, with a low around 51.
Friday 2025-05-02, Slight Chance Rain. A slight chance of rain after 11am. Mostly sunny, with a high near 73.
Friday Night 2025-05-02, Rain. Rain. Mostly cloudy, with a low around 50.- Saturday 2025-05-03, Chance Rain. A chance of rain. Mostly cloudy, with a high near 62.
Saturday Night 2025-05-03, Slight Chance Rain then Partly Cloudy. A slight chance of rain. Partly cloudy, with a low around 46.
- Sunday 2025-05-04, Mostly Sunny. Mostly sunny, with a high near 65.
Sunday Night 2025-05-04, Partly Cloudy. Partly cloudy, with a low around 45.- Monday 2025-05-05, Mostly Sunny. Mostly sunny, with a high near 66.