Average annual temperature is 12.1 °C
Absolute maximum temperature: 37.6 °C
Absolute minimum temperature: -19.1 °C
Number of sunny days: 219 days
Number of rainy days: 128 days
Number of snow days: 18 days
Look at detailed online map of Washington
* Weather data for Washington 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) | 8.6 | 14.0 | 22.3 | 29.3 | 30.8 | 33.2 | 35.8 | 37.6 | 35.1 | 32.9 | 19.8 | 14.5 |
| Average daytime temperature (°C) | 1.5 | 5.9 | 8.8 | 18.7 | 25.3 | 29.8 | 29.5 | 29.8 | 28.1 | 19.0 | 12.2 | 6.4 |
| Average temperature (°C) | -2.8 | -0.9 | 2.1 | 11.4 | 18.9 | 23.9 | 24.0 | 24.5 | 22.0 | 13.6 | 6.4 | 1.8 |
| Average night temperature (°C) | -6.2 | -5.4 | -2.5 | 5.6 | 13.1 | 18.2 | 19.2 | 20.0 | 17.0 | 9.2 | 1.6 | -1.8 |
| Absolute minimum temperature (°C) | -19.1 | -16.6 | -11.3 | -4.6 | 3.3 | 9.9 | 12.4 | 12.9 | 10.7 | -5.5 | -7.5 | -5.4 |
| 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 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.6 | 10.6 | 11.9 | 13.3 | 14.5 | 15.1 | 14.8 | 13.8 | 12.5 | 11.1 | 9.9 | 9.2 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 4.8 | 7.4 | 8.3 | 9.9 | 11.5 | 13.1 | 11.6 | 11.2 | 10.1 | 7.9 | 7.0 | 5.3 |
| Precipitation (mm) | 55 | 38 | 40 | 30 | 68 | 53 | 105 | 61 | 40 | 54 | 10 | 53 |
| Sunny days | 18 | 19 | 21 | 20 | 16 | 14 | 14 | 17 | 19 | 17 | 23 | 21 |
| Rainy days | 6 | 6 | 9 | 9 | 15 | 16 | 17 | 14 | 11 | 13 | 5 | 7 |
| Snow days | 7 | 3 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 2 | 3 |
The best time to visit Washington during the most sunny months:
The largest precipitation sum in Washington is at