Average annual temperature is 14.4 °C
Absolute maximum temperature: 35.4 °C
Absolute minimum temperature: -5.9 °C
Number of sunny days: 170 days
Number of rainy days: 191 days
Number of snow days: 4 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) | 21.3 | 24.6 | 27.2 | 28.1 | 28.6 | 31.8 | 35.4 | 34.1 | 32.8 | 28.8 | 24.7 | 18.4 |
| Average daytime temperature (°C) | 12.2 | 15.2 | 16.2 | 20.6 | 23.2 | 26.6 | 31.2 | 29.8 | 27.4 | 21.5 | 15.7 | 11.9 |
| Average temperature (°C) | 6.2 | 9.0 | 9.2 | 13.5 | 16.9 | 20.2 | 24.4 | 23.4 | 20.6 | 14.6 | 8.9 | 6.1 |
| Average night temperature (°C) | 2.2 | 4.6 | 3.8 | 7.8 | 11.7 | 14.5 | 18.8 | 18.4 | 15.0 | 9.4 | 4.1 | 1.9 |
| Absolute minimum temperature (°C) | -5.9 | -5.7 | -5.9 | 0.0 | 3.3 | 9.5 | 15.2 | 14.3 | 11.4 | 3.8 | -5.0 | -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 | 14.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 10.0 | 10.9 | 12.0 | 13.1 | 14.1 | 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) | 5.3 | 6.0 | 8.1 | 8.7 | 10.3 | 11.0 | 11.9 | 10.5 | 10.9 | 9.3 | 7.4 | 6.0 |
| Precipitation (mm) | 127 | 100 | 77 | 108 | 84 | 58 | 38 | 122 | 38 | 32 | 49 | 99 |
| Sunny days | 15 | 10 | 16 | 10 | 14 | 10 | 9 | 11 | 18 | 19 | 23 | 15 |
| Rainy days | 15 | 17 | 14 | 20 | 17 | 20 | 22 | 20 | 12 | 12 | 7 | 15 |
| Snow days | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
The best time to visit Walnut during the most sunny months:
The largest precipitation sum in Walnut is at