Historical weather statistics for Seattle, United States
Typical weather in Seattle
August is typically the warmest month, with median daily highs near 26.0 °C and lows near 14.9 °C. December is typically the coolest month, with median daily highs near 7.1 °C and lows near 2.5 °C. Median precipitation probability is highest in November, at about 58.0 %. Median relative humidity reaches its annual high in December, at about 97.1 %. These are historical climate statistics, not a day-to-day forecast.
Monthly values are medians of historical daily weather statistics. They describe typical conditions and are not a forecast.
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| Month | Daily max temperature (°C) | Daily min temperature (°C) | Wind chance (%) | Humidity (%) | Precipitation chance (%) | Snow depth (cm) |
|---|---|---|---|---|---|---|
| January | 8.4 °C | 2.7 °C | 9.1 % | 97.0 % | 51.0 % | 0.0 cm |
| February | 8.8 °C | 2.1 °C | 12.0 % | 96.2 % | 54.3 % | 0.0 cm |
| March | 11.0 °C | 3.1 °C | 12.3 % | 94.9 % | 56.3 % | 0.0 cm |
| April | 13.7 °C | 5.1 °C | 2.7 % | 93.8 % | 48.0 % | 0.0 cm |
| May | 18.0 °C | 8.9 °C | 0.0 % | 92.9 % | 36.7 % | 0.0 cm |
| June | 20.1 °C | 11.2 °C | 0.0 % | 92.2 % | 33.0 % | 0.0 cm |
| July | 25.1 °C | 14.3 °C | 0.0 % | 90.2 % | 10.7 % | 0.0 cm |
| August | 26.0 °C | 14.9 °C | 0.0 % | 90.2 % | 13.0 % | 0.0 cm |
| September | 21.2 °C | 12.1 °C | 0.2 % | 93.1 % | 33.3 % | 0.0 cm |
| October | 15.5 °C | 8.9 °C | 10.9 % | 95.7 % | 54.3 % | 0.0 cm |
| November | 10.3 °C | 5.2 °C | 15.0 % | 96.6 % | 58.0 % | 0.0 cm |
| December | 7.1 °C | 2.5 °C | 16.4 % | 97.1 % | 58.0 % | 0.0 cm |