Current Weather and Forecast in Seattle, WA
Washington, United States 🇺🇸
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Explore Seattle's typical temperatures and climate below - Live data returns shortly.
About the weather in Seattle
Seattle has an oceanic climate. August is the warmest month, with average highs of 77°, and December the coldest, when nights fall to around 37°. December brings the most rain, on about 19 days, while July is the sunniest, with 12.7 hours of sunshine a day. Over a whole year it rains on roughly 151 days.
Seattle climate guide: monthly averages, seasons and the best time to visit
Common questions
Is Seattle cold in winter?
December nights average 37°F (3°C). Chilly rather than harsh - hard freezes are uncommon.
Which month is coolest in Seattle?
December, with highs of 45°F (7°C) and lows near 37°F (3°C). The coldest day in the 2015-2024 record fell to 14°F (-10°C).
What is the best time to visit Seattle?
The best time to visit Seattle is generally May to September, when the dry season is running but the afternoons are still bearable. Daytime temperatures in that window sit near 71°F (22°C), with rain on about 7 days a month. For the same question asked the other way round, see where else is warm in May.
What is the hottest month in Seattle?
August, averaging 77°F (25°C) by day and 59°F (15°C) overnight. The hottest single day in our 2015-2024 record for this location reached 100°F (38°C).
Is there snow in Seattle?
Yes - about 7 days a year carry measurable snowfall, concentrated December through March.
What is the rainiest month in Seattle?
December, at 7.4 inches (189 mm) over about 19 days. July is the driest month, at 14 mm (0.6 in).