Average annual temperature is 11.9 °C
Absolute maximum temperature: 37.3 °C
Absolute minimum temperature: -24.0 °C
Number of sunny days: 197 days
Number of rainy days: 148 days
Number of snow days: 20 days
Look at detailed online map of Walnut
* Weather data for Walnut 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) | 12.4 | 14.3 | 22.1 | 25.9 | 33.4 | 35.8 | 35.5 | 37.3 | 34.2 | 28.9 | 19.2 | 15.2 |
| Average daytime temperature (°C) | 2.9 | 5.7 | 8.7 | 17.6 | 24.4 | 29.5 | 29.1 | 28.9 | 25.8 | 17.7 | 10.1 | 7.0 |
| Average temperature (°C) | -1.3 | 0.0 | 3.2 | 10.6 | 17.9 | 22.9 | 23.5 | 23.2 | 20.3 | 13.0 | 5.1 | 3.1 |
| Average night temperature (°C) | -4.3 | -4.3 | -0.8 | 4.8 | 11.6 | 16.4 | 18.2 | 18.3 | 15.8 | 9.0 | 0.9 | 0.5 |
| Absolute minimum temperature (°C) | -24.0 | -20.8 | -12.2 | -1.9 | 1.6 | 8.2 | 13.3 | 11.2 | 10.6 | -2.0 | -11.3 | -8.4 |
| 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 | 14.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 3.5 | 7.3 | 6.6 | 9.3 | 11.1 | 12.5 | 12.4 | 11.0 | 9.0 | 7.3 | 7.2 | 4.1 |
| Precipitation (mm) | 68 | 69 | 85 | 46 | 68 | 19 | 157 | 64 | 82 | 95 | 31 | 69 |
| Sunny days | 11 | 16 | 16 | 14 | 21 | 20 | 14 | 18 | 14 | 14 | 23 | 16 |
| Rainy days | 8 | 9 | 14 | 16 | 10 | 10 | 17 | 13 | 16 | 16 | 5 | 14 |
| Snow days | 12 | 3 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 2 | 1 |
The best time to visit Walnut during the most sunny months:
The largest precipitation sum in Walnut is at