Seattle, WA
Climate overview — based on NOAA 1991-2020 normals from SEATTLE BOEING FLD, WA US.
Year-round temperatures (°F)
Climate summary
Seattle has an annual average temperature of 53.8°F with about 36.5 inches of precipitation per year. The warmest month is August (average high 77.4°F), and the coldest is December (average low 36.2°F). November is typically the wettest month (5.80 in) and July the driest (0.56 in).
Best time to visit Seattle
Full guide →Climate change signal
All-time records →126 of 366 (34.4%) of Seattle's all-time daily heat records have been set since 2015. If records were spread evenly across the station's history, only about 5% would fall in any given decade.
| 1940s | 18 | |
| 1950s | 68 | |
| 1960s | 48 | |
| 1990s | 4 | |
| 2000s | 69 | |
| 2010s | 98 | |
| 2020s | 61 |
Bars: number of all-time daily heat records still standing that were set in each decade.
Monthly averages
| Month | Avg High | Avg Low | Avg Temp | Precipitation | Snow | Rainy days |
|---|---|---|---|---|---|---|
| January | 48.6°F | 36.8°F | 42.7°F | 5.21 in | — | 19 |
| February | 50.7°F | 36.8°F | 43.7°F | 3.71 in | — | 16 |
| March | 54.8°F | 39.4°F | 47.1°F | 3.94 in | — | 18 |
| April | 59.8°F | 43.6°F | 51.7°F | 2.89 in | — | 15 |
| May | 66.5°F | 49.3°F | 57.9°F | 1.98 in | — | 11 |
| June | 71.2°F | 54.0°F | 62.6°F | 1.22 in | — | 9 |
| July | 77.3°F | 57.5°F | 67.4°F | 0.56 in | — | 3 |
| August | 77.4°F | 58.1°F | 67.8°F | 0.83 in | — | 4 |
| September | 71.7°F | 53.9°F | 62.8°F | 1.37 in | — | 9 |
| October | 61.0°F | 46.4°F | 53.7°F | 3.49 in | — | 15 |
| November | 53.0°F | 39.9°F | 46.4°F | 5.80 in | — | 18 |
| December | 47.8°F | 36.2°F | 42.0°F | 5.49 in | — | 18 |
Climate twins of Seattle
Why these? →The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).