Average annual temperature is 10.4 °C
Absolute maximum temperature: 34.2 °C
Absolute minimum temperature: -8.5 °C
Number of sunny days: 154 days
Number of rainy days: 209 days
Number of snow days: 2 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) | 11.5 | 12.0 | 17.4 | 28.3 | 30.5 | 29.4 | 31.0 | 34.2 | 27.8 | 27.7 | 15.0 | 12.8 |
| Average daytime temperature (°C) | 7.4 | 7.1 | 10.4 | 12.3 | 21.3 | 22.3 | 26.5 | 26.8 | 20.9 | 16.2 | 10.6 | 9.4 |
| Average temperature (°C) | 4.0 | 2.7 | 4.7 | 6.8 | 14.4 | 15.2 | 18.8 | 19.4 | 14.4 | 10.9 | 6.1 | 6.1 |
| Average night temperature (°C) | 1.4 | -0.4 | 0.8 | 2.9 | 8.6 | 9.2 | 11.9 | 13.6 | 9.9 | 7.2 | 3.1 | 3.8 |
| Absolute minimum temperature (°C) | -6.4 | -8.5 | -4.9 | -2.9 | 3.2 | 6.0 | 9.5 | 8.8 | 3.5 | -3.9 | -4.8 | -3.1 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 9.0 | 10.0 | 12.0 | 14.0 | 15.0 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 8.0 |
| Daylight mean duration (h) | 8.9 | 10.3 | 11.9 | 13.6 | 15.1 | 15.9 | 15.5 | 14.2 | 12.6 | 10.9 | 9.3 | 8.5 |
| Daylight minimum duration (h) | 8.0 | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 8.0 | 8.0 |
| Sunshine mean duration (h) | 3.9 | 4.6 | 7.1 | 6.1 | 10.1 | 11.1 | 13.0 | 11.3 | 7.9 | 6.5 | 5.2 | 3.0 |
| Precipitation (mm) | 124 | 112 | 100 | 189 | 31 | 39 | 10 | 46 | 94 | 115 | 208 | 305 |
| Sunny days | 5 | 9 | 8 | 5 | 16 | 20 | 25 | 18 | 11 | 15 | 14 | 8 |
| Rainy days | 25 | 18 | 23 | 25 | 15 | 10 | 6 | 13 | 19 | 16 | 16 | 23 |
| Snow days | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit King County during the most sunny months:
Months with the longest average daylight duration in King County:
The largest precipitation sum in King County is at