Mercer Island, WA

Current conditions, hourly and 7-day forecast, and live radar for Mercer Island, WA 98040. Right now: mostly cloudy, 59°F. Data from the National Weather Service.

• Tonight: Mostly cloudy. Low around 59, with temperatures rising to around 61 overnight. North northeast wind around 3 mph.
• Thursday: Mostly cloudy, with a high near 69. North wind around 3 mph.
• Thursday Night: A slight chance of rain between 11pm and midnight. Mostly cloudy. Low around 57, with temperatures rising to around 59 overnight. Southwest wind 2 to 7 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
• Friday: Mostly cloudy, with a high near 68. South wind 1 to 7 mph.
• Friday Night: A slight chance of rain after 5am. Cloudy, with a low around 57. North wind around 3 mph. Chance of precipitation is 20%.
• Saturday: A chance of rain. Mostly cloudy, with a high near 67. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch possible.