Average annual temperature is 11.5 °C
Absolute maximum temperature: 34.1 °C
Absolute minimum temperature: -18.0 °C
Number of sunny days: 171 days
Number of rainy days: 181 days
Number of snow days: 13 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) | 16.8 | 13.9 | 17.2 | 26.2 | 31.5 | 33.1 | 32.7 | 34.1 | 31.7 | 29.2 | 21.2 | 14.2 |
| Average daytime temperature (°C) | 4.2 | 7.3 | 7.9 | 16.8 | 22.7 | 27.5 | 28.7 | 27.0 | 24.7 | 17.6 | 10.6 | 7.2 |
| Average temperature (°C) | 0.7 | 1.5 | 2.8 | 10.1 | 16.3 | 20.9 | 22.9 | 21.6 | 19.2 | 12.8 | 5.2 | 3.7 |
| Average night temperature (°C) | -2.0 | -2.4 | -1.0 | 4.5 | 10.4 | 15.1 | 17.6 | 16.9 | 14.5 | 9.1 | 1.1 | 1.2 |
| Absolute minimum temperature (°C) | -13.2 | -18.0 | -9.1 | -3.6 | 1.0 | 9.6 | 13.4 | 11.0 | 9.0 | -4.1 | -9.1 | -7.3 |
| 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 | 9.3 |
| 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) | 3.0 | 7.2 | 6.4 | 9.0 | 10.2 | 11.1 | 12.2 | 10.6 | 8.8 | 6.8 | 6.9 | 3.7 |
| Precipitation (mm) | 75 | 96 | 148 | 94 | 121 | 61 | 97 | 147 | 43 | 118 | 22 | 66 |
| Sunny days | 9 | 16 | 11 | 12 | 20 | 15 | 11 | 15 | 15 | 11 | 22 | 14 |
| Rainy days | 16 | 10 | 17 | 18 | 11 | 15 | 20 | 16 | 15 | 19 | 7 | 17 |
| Snow days | 6 | 2 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0 |
The best time to visit Walnut during the most sunny months:
The largest precipitation sum in Walnut is at