Average annual temperature is 17.3 °C
Absolute maximum temperature: 35.7 °C
Absolute minimum temperature: -5.2 °C
Number of sunny days: 173 days
Number of rainy days: 192 days
Look at detailed online map of Walla Watta
* Weather data for Walla Watta 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) | 23.7 | 27.2 | 28.4 | 29.8 | 29.4 | 32.4 | 35.1 | 35.7 | 34.3 | 28.5 | 25.6 | 22.7 |
| Average daytime temperature (°C) | 15.3 | 17.2 | 18.1 | 23.0 | 23.8 | 28.3 | 32.3 | 31.6 | 27.7 | 23.3 | 16.9 | 14.9 |
| Average temperature (°C) | 10.0 | 11.9 | 12.6 | 17.3 | 18.9 | 22.9 | 26.8 | 26.3 | 22.6 | 17.4 | 11.6 | 9.1 |
| Average night temperature (°C) | 5.9 | 7.7 | 7.9 | 12.7 | 14.9 | 18.6 | 22.5 | 22.1 | 18.6 | 12.9 | 7.6 | 4.8 |
| Absolute minimum temperature (°C) | -1.1 | -5.2 | -0.8 | 1.9 | 8.9 | 12.3 | 18.3 | 16.9 | 13.1 | 6.1 | -4.5 | -2.1 |
| 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 | 9.0 |
| Daylight mean duration (h) | 10.1 | 10.9 | 12.0 | 13.1 | 14.0 | 14.5 | 14.3 | 13.5 | 12.4 | 11.3 | 10.3 | 9.8 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 6.6 | 7.2 | 8.4 | 9.4 | 9.8 | 11.2 | 10.8 | 10.6 | 9.3 | 9.0 | 7.4 | 6.8 |
| Precipitation (mm) | 104 | 83 | 48 | 134 | 68 | 86 | 104 | 198 | 169 | 32 | 65 | 162 |
| Sunny days | 18 | 12 | 18 | 10 | 14 | 9 | 6 | 10 | 15 | 23 | 17 | 21 |
| Rainy days | 13 | 16 | 13 | 20 | 17 | 21 | 25 | 21 | 15 | 8 | 13 | 10 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Walla Watta during the most sunny months:
The largest precipitation sum in Walla Watta is at