Western Washington Weather: Seattle Sees Warmest Day Sunday Before Gradual Cool-Down

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Seattle, WA – Warm, dry air will settle over the Seattle area this weekend, giving residents a sun-filled Sunday with temperatures climbing to 82°F before highs crest near 85°F on Monday. Evenings will stay mild, making this an ideal stretch for outdoor dining, festivals, or late-summer lake days.

According to the National Weather Service, calm winds and clear skies will dominate through Tuesday, with only a gradual dip into the low 70s by midweek. Light north winds on Sunday and Monday will keep humidity low, further adding to the comfort for outdoor activities. From Ballard’s waterfront to Volunteer Park, expect excellent visibility and pleasant conditions well into the evening.

While this is a rare August run of warm but comfortable weather, changes arrive Wednesday when highs fall back into the low 70s and a slight chance of rain emerges by Friday. Residents planning barbecues, hikes, or day trips to Bainbridge or the Cascades should aim for Sunday through Tuesday to make the most of this streak.

Five Day Forecast for Seattle, WA

  • Saturday: Mostly sunny, calm winds. High 79°F, low 60°F
  • Sunday: Sunny, light north winds. High 82°F, low 64°F
  • Monday: Sunny and warm. High 85°F, low 64°F
  • Tuesday: Sunny, light winds. High 84°F, low 61°F
  • Wednesday: Mostly sunny, cooler. High 73°F, low 59°F