Average annual temperature is 12.5 °C
Absolute maximum temperature: 34.8 °C
Absolute minimum temperature: -11.0 °C
Number of sunny days: 168 days
Number of rainy days: 190 days
Number of snow days: 7 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) | 15.7 | 20.6 | 21.1 | 30.4 | 30.8 | 34.4 | 34.8 | 33.3 | 33.6 | 28.2 | 21.1 | 15.8 |
| Average daytime temperature (°C) | 7.6 | 10.3 | 10.8 | 19.6 | 22.5 | 26.6 | 30.6 | 29.0 | 24.7 | 19.2 | 11.4 | 8.3 |
| Average temperature (°C) | 3.7 | 3.7 | 4.7 | 12.5 | 15.4 | 20.0 | 24.3 | 22.7 | 18.9 | 13.7 | 5.8 | 4.3 |
| Average night temperature (°C) | 0.8 | -1.2 | 0.1 | 6.3 | 8.4 | 14.0 | 18.7 | 17.3 | 14.1 | 9.2 | 1.4 | 1.1 |
| Absolute minimum temperature (°C) | -4.4 | -11.0 | -6.3 | -1.7 | 3.0 | 8.6 | 15.3 | 13.5 | 8.2 | 1.1 | -5.6 | -4.1 |
| 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 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.7 | 10.7 | 11.9 | 13.3 | 14.4 | 15.0 | 14.7 | 13.7 | 12.5 | 11.1 | 10.0 | 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) | 4.4 | 7.0 | 6.7 | 9.1 | 10.8 | 10.7 | 12.0 | 10.8 | 8.7 | 7.1 | 7.3 | 4.0 |
| Precipitation (mm) | 86 | 43 | 80 | 84 | 25 | 82 | 72 | 89 | 88 | 61 | 57 | 99 |
| Sunny days | 11 | 14 | 11 | 15 | 18 | 12 | 12 | 9 | 17 | 17 | 17 | 15 |
| Rainy days | 19 | 12 | 19 | 15 | 13 | 18 | 19 | 22 | 13 | 14 | 11 | 15 |
| Snow days | 1 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 1 |
The best time to visit Walnut during the most sunny months:
The largest precipitation sum in Walnut is at