Average annual temperature is 19.5 °C
Absolute maximum temperature: 44.0 °C
Absolute minimum temperature: -9.8 °C
Number of sunny days: 251 days
Number of rainy days: 114 days
Look at detailed online map of King County
* Weather data for King County United States is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 26.4 | 29.6 | 30.3 | 34.5 | 36.5 | 42.9 | 42.2 | 44.0 | 42.9 | 34.9 | 31.2 | 23.4 |
| Average daytime temperature (°C) | 15.7 | 17.4 | 21.3 | 26.1 | 29.2 | 34.6 | 38.0 | 40.3 | 35.1 | 26.1 | 19.2 | 15.5 |
| Average temperature (°C) | 8.7 | 8.7 | 13.3 | 17.9 | 22.6 | 27.3 | 31.7 | 33.6 | 28.5 | 19.5 | 12.5 | 9.2 |
| Average night temperature (°C) | 3.2 | 2.9 | 7.4 | 11.4 | 16.9 | 21.3 | 25.6 | 26.8 | 22.6 | 14.0 | 7.5 | 4.0 |
| Absolute minimum temperature (°C) | -9.8 | -5.7 | -1.9 | 5.5 | 10.9 | 15.7 | 21.1 | 22.4 | 17.4 | -1.5 | -1.7 | -1.9 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 |
| Daylight mean duration (h) | 10.2 | 11.0 | 12.0 | 13.0 | 13.9 | 14.3 | 14.1 | 13.4 | 12.4 | 11.3 | 10.4 | 10.0 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 | 9.0 |
| Sunshine mean duration (h) | 7.6 | 7.2 | 9.9 | 10.4 | 10.9 | 11.6 | 12.4 | 12.2 | 10.3 | 9.1 | 7.9 | 7.7 |
| Precipitation (mm) | 19 | 24 | 23 | 11 | 85 | 69 | 21 | 16 | 24 | 153 | 17 | 69 |
| Sunny days | 26 | 16 | 20 | 21 | 15 | 15 | 22 | 27 | 22 | 22 | 21 | 24 |
| Rainy days | 5 | 12 | 11 | 9 | 16 | 15 | 9 | 4 | 8 | 9 | 9 | 7 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit King County during the most sunny months:
The largest precipitation sum in King County is at