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 57°F 2025-11-15T10:30:00 Today 2025-11-15, Chance Rain then Rain Likely. Rain likely, mainly between 2pm and 4pm. Mostly cloudy, with a high near 58. South wind 3 to 6 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Tonight 2025-11-15, Chance Rain. A slight chance of rain before 10pm, then a chance of rain after 3am. Mostly cloudy, with a low around 51. Calm wind. Chance of precipitation is 30%.
Sunday 2025-11-16, Rain Likely and Patchy Fog. Rain likely, mainly after 10am. Patchy fog between 9am and 10am. Otherwise, cloudy, with a high near 56. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday Night 2025-11-16, Rain. Rain before midnight, then showers after midnight. Low around 49. South wind around 5 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.
Monday 2025-11-17, Showers Likely. Showers likely. Mostly cloudy, with a high near 54. South wind around 5 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Monday Night 2025-11-17, Chance Showers. A 50 percent chance of showers. Mostly cloudy, with a low around 43.
Tuesday 2025-11-18, Chance Showers. A 30 percent chance of showers. Partly sunny, with a high near 52.
Tuesday Night 2025-11-18, Partly Cloudy. Partly cloudy, with a low around 39.
Wednesday 2025-11-19, Chance Rain. A chance of rain after 10am. Partly sunny, with a high near 51.
Wednesday Night 2025-11-19, Rain Likely. Rain likely. Mostly cloudy, with a low around 44.- Thursday 2025-11-20, Rain Likely. Rain likely. Mostly cloudy, with a high near 53.
- Thursday Night 2025-11-20, Chance Rain. A chance of rain. Mostly cloudy, with a low around 42.
- Friday 2025-11-21, Chance Rain. A chance of rain. Partly sunny, with a high near 53.