| NWS Forecast for: Mercer Island WA Issued by: National Weather Service Seattle, WA Last Update: 2:25 pm PDT Jul 13, 2025 |  |
| This Afternoon: Sunny, with a high near 87. North northwest wind around 7 mph. Tonight: Partly cloudy, with a low around 62. Northeast wind 5 to 7 mph. Monday: Partly sunny, with a high near 75. Light and variable wind becoming northwest around 6 mph in the afternoon. Monday Night: Mostly clear, with a low around 59. Northwest wind around 6 mph becoming light and variable in the evening. Tuesday: Sunny, with a high near 85. Calm wind becoming north northwest 5 to 8 mph in the afternoon. Tuesday Night: Clear, with a low around 63. Wednesday: Sunny, with a high near 90. Wednesday Night: Clear, with a low around 63. Thursday: Sunny, with a high near 87. Thursday Night: Clear, with a low around 61. Friday: Sunny, with a high near 84. Friday Night: Mostly clear, with a low around 59. Saturday: Mostly sunny, with a high near 79. | |
| Mercer Island WA 47.56°N 122.21°W (Elev. 121 ft) | |
Visit your local NWS office at: https://www.weather.gov/sew |
