Weather in Seattle
What's the weather like in Seattle?
Seattle has a moderate climate and moderate rainfall spread across the year. Average daytime highs range from 8°C (47°F) in January to 25°C (76°F) in July, with overnight lows around 3°C (37°F) and 15°C (58°F) respectively.
For comfortable sightseeing temperatures (18–26°C daytime highs), the best months to visit Seattle are May through September.
Quick facts
- Country
- 🇺🇸 United States
- Region
- North America
- Time zone
- America/Los_Angeles
- Coordinates
- 47.606, -122.332
Monthly climate
Long-run averages for each month of the year.
| Month | Avg high | Avg low | Rainfall | Rain days | Snow days |
|---|---|---|---|---|---|
| January | 8°C / 47°F | 3°C / 37°F | 182 mm | 21 | — |
| February | 8°C / 46°F | 2°C / 36°F | 125 mm | 21 | — |
| March | 11°C / 52°F | 4°C / 39°F | 123 mm | 20 | — |
| April | 14°C / 57°F | 6°C / 42°F | 93 mm | 19 | — |
| May | 18°C / 65°F | 10°C / 49°F | 56 mm | 16 | — |
| June | 21°C / 70°F | 12°C / 54°F | 50 mm | 14 | — |
| July | 25°C / 76°F | 15°C / 58°F | 16 mm | 8 | — |
| August | 25°C / 76°F | 15°C / 59°F | 27 mm | 10 | — |
| September | 20°C / 69°F | 12°C / 54°F | 65 mm | 15 | — |
| October | 15°C / 59°F | 9°C / 48°F | 138 mm | 18 | — |
| November | 10°C / 50°F | 5°C / 41°F | 178 mm | 21 | — |
| December | 7°C / 45°F | 3°C / 37°F | 185 mm | 20 | — |
Seattle by month
Detailed weather for any specific month:
Seasonal patterns to know
Atlantic hurricane season runs June–November (peak August–October). Tropical storms and hurricanes are possible — peak risk is August–October.
Cities with a similar climate to Seattle
Frequently asked questions
When is the best time to visit Seattle?
The most comfortable months in Seattle are usually June, July, August, when average highs sit near 18–26°C (64–79°F) with relatively little rain. See the full month-by-month breakdown for the exact figures.
What is the hottest month in Seattle?
August is typically the hottest month in Seattle, averaging a high of 25°C (76°F).
What is the coldest month in Seattle?
February is usually the coldest, with average lows around 2°C (36°F).
Does it snow in Seattle?
Snow is rare in Seattle; the climate data shows essentially no snowfall across the year.
Live forecast, sunrise/sunset, and more.