Average annual temperature is 15.6 °C
Absolute maximum temperature: 40.6 °C
Absolute minimum temperature: -9.9 °C
Number of sunny days: 213 days
Number of rainy days: 151 days
Number of snow days: 1 day
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) | 19.2 | 20.1 | 25.5 | 27.0 | 31.3 | 39.9 | 37.7 | 40.6 | 35.2 | 31.5 | 24.8 | 16.9 |
| Average daytime temperature (°C) | 9.6 | 11.9 | 14.1 | 21.1 | 26.4 | 31.3 | 33.7 | 33.9 | 29.7 | 21.3 | 15.0 | 10.9 |
| Average temperature (°C) | 3.7 | 5.2 | 8.0 | 14.3 | 20.2 | 24.9 | 27.3 | 27.6 | 23.3 | 16.1 | 9.4 | 6.2 |
| Average night temperature (°C) | -0.4 | 0.3 | 3.4 | 8.6 | 15.0 | 19.4 | 22.2 | 22.4 | 18.2 | 12.0 | 5.1 | 2.9 |
| Absolute minimum temperature (°C) | -9.9 | -8.4 | -6.7 | 1.9 | 6.2 | 13.9 | 17.6 | 15.8 | 13.7 | -1.8 | -4.7 | -2.2 |
| 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 | 14.0 | 12.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.9 | 10.8 | 12.0 | 13.2 | 14.2 | 14.7 | 14.5 | 13.6 | 12.4 | 11.2 | 10.2 | 9.6 |
| 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) | 6.2 | 7.5 | 7.3 | 10.2 | 10.6 | 12.5 | 11.3 | 11.9 | 10.4 | 7.8 | 7.6 | 5.2 |
| Precipitation (mm) | 56 | 82 | 129 | 29 | 132 | 75 | 50 | 70 | 58 | 85 | 36 | 87 |
| Sunny days | 19 | 17 | 14 | 19 | 14 | 16 | 17 | 20 | 19 | 18 | 23 | 17 |
| Rainy days | 11 | 11 | 17 | 11 | 17 | 14 | 14 | 11 | 11 | 13 | 7 | 14 |
| Snow days | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Walnut during the most sunny months:
The largest precipitation sum in Walnut is at