Weather in Seattle for the month
The full August calendar: model forecast through August 10, then 30-year statistics.
🔮 What August will be like
📅 August calendar2-week forecast →
🌅 August astronomy
📒 Weather diary in Seattle
Ready-made observation table for August: past days are already filled in with weather-station data — for school and beyond. Open the diary →
✉️ Weather forecast by email
Get the forecast for this city by email — every day at 17:00 Moscow time.
FAQ about weather in Seattle ❓
What will the weather be like in August in Seattle?
The forecast part of August: +20°…+30° by day, no prolonged rain.
When are the best days of August?
The forecast points to 9–10 August: +30°. Models don’t see beyond two weeks — check back, the page updates daily.
How accurate is a monthly forecast?
Honestly: models are reliable up to ~14 days. So through August 10 we show the model forecast, and beyond that — each day’s climate normal from 30 years of observations (ERA5). It is a statistical expectation, not a guarantee.
Weather in Seattle — in detail
Weather forecast in Seattle for the month: from +14° to +30° day and night. Warmest day — Monday, August 10 (up to +30°). Coolest — Monday, August 3 (+14°). No significant precipitation. Trend: it warms toward the end. See also the forecast for 2 weeks and the weather archive.
To quickly check the weather in Seattle anytime, add the city to favorites — and get a daily forecast by email at 17:00 (Moscow time). Note: the forecast may be refined as new data arrives. Data: OpenWeather, Open-Meteo, met.no.