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 61°F 2025-06-13T17:30:00 
Tonight 2025-06-13, Mostly Cloudy. Mostly cloudy, with a low around 51. West wind 5 to 7 mph becoming south after midnight.
Saturday 2025-06-14, Decreasing Clouds. Mostly cloudy, then gradually becoming sunny, with a high near 68. Light and variable wind becoming north northwest around 6 mph in the afternoon.
Saturday Night 2025-06-14, Mostly Clear. Mostly clear, with a low around 50. North northeast wind 5 to 8 mph.
Sunday 2025-06-15, Sunny. Sunny, with a high near 70. Calm wind becoming north northwest around 6 mph in the afternoon.
Sunday Night 2025-06-15, Partly Cloudy. Partly cloudy, with a low around 51. North northwest wind 5 to 7 mph becoming calm in the evening.
Monday 2025-06-16, Mostly Sunny. Mostly sunny, with a high near 72.- Monday Night 2025-06-16, Partly Cloudy. Partly cloudy, with a low around 53.
Tuesday 2025-06-17, Slight Chance Showers. A slight chance of showers after 11am. Mostly sunny, with a high near 71.
Tuesday Night 2025-06-17, Chance Showers. A chance of showers. Mostly cloudy, with a low around 57.
Wednesday 2025-06-18, Chance Showers. A chance of showers. Partly sunny, with a high near 69.Wednesday Night 2025-06-18, Slight Chance Showers then Partly Cloudy. A slight chance of showers. Partly cloudy, with a low around 53.
- Juneteenth 2025-06-19, Slight Chance Showers. A slight chance of showers. Partly sunny, with a high near 68.
- Thursday Night 2025-06-19, Partly Cloudy. Partly cloudy, with a low around 53.
- Friday 2025-06-20, Chance Showers. A chance of showers. Partly sunny, with a high near 67.