| NWS Forecast for: Mercer Island WA Issued by: National Weather Service Seattle, WA Last Update: 8:34 am PDT Jul 13, 2025 | |
| Today: Partly sunny, then gradually becoming sunny, with a high near 83. Calm wind becoming north 5 to 8 mph in the morning. Tonight: Partly cloudy, with a low around 61. Northeast wind 6 to 8 mph. Monday: Mostly cloudy, then gradually becoming sunny, with a high near 76. Calm wind becoming northwest around 6 mph in the afternoon. Monday Night: Mostly clear, with a low around 61. North northeast wind 5 to 7 mph. Tuesday: Sunny, with a high near 83. North wind 5 to 9 mph. Tuesday Night: Clear, with a low around 63. Wednesday: Sunny, with a high near 88. Wednesday Night: Mostly clear, with a low around 63. Thursday: Sunny, with a high near 84. Thursday Night: Mostly clear, with a low around 61. Friday: Sunny, with a high near 80. Friday Night: Partly cloudy, with a low around 59. Saturday: Mostly sunny, with a high near 78. | |
| Mercer Island WA 47.58°N 122.25°W (Elev. 105 ft) | |
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