Average annual temperature is 18.3 °C
Absolute maximum temperature: 36.7 °C
Absolute minimum temperature: -3.7 °C
Number of sunny days: 184 days
Number of rainy days: 181 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) | 22.2 | 25.8 | 26.3 | 28.5 | 30.9 | 36.2 | 35.1 | 36.7 | 32.4 | 31.8 | 27.6 | 21.5 |
| Average daytime temperature (°C) | 14.4 | 16.7 | 18.7 | 22.2 | 27.4 | 31.3 | 32.2 | 32.7 | 29.7 | 25.2 | 18.3 | 14.7 |
| Average temperature (°C) | 9.9 | 11.1 | 13.3 | 16.3 | 21.9 | 25.8 | 27.4 | 27.6 | 24.3 | 19.6 | 12.8 | 9.4 |
| Average night temperature (°C) | 6.2 | 7.0 | 8.8 | 11.7 | 16.7 | 20.7 | 23.2 | 23.4 | 19.6 | 15.0 | 8.2 | 5.2 |
| Absolute minimum temperature (°C) | -2.7 | -3.7 | -3.5 | 5.9 | 7.9 | 16.7 | 19.4 | 17.1 | 14.9 | 3.3 | 0.0 | -1.3 |
| 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 | 14.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 |
| Daylight mean duration (h) | 10.2 | 11.0 | 12.0 | 13.0 | 13.9 | 14.4 | 14.2 | 13.4 | 12.4 | 11.3 | 10.4 | 9.9 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 | 9.0 |
| Sunshine mean duration (h) | 5.9 | 6.3 | 7.7 | 8.2 | 11.3 | 12.2 | 11.6 | 10.9 | 10.5 | 8.1 | 6.8 | 7.2 |
| Precipitation (mm) | 152 | 134 | 152 | 195 | 77 | 70 | 104 | 98 | 40 | 47 | 59 | 54 |
| Sunny days | 13 | 13 | 13 | 11 | 12 | 11 | 14 | 17 | 18 | 23 | 19 | 20 |
| Rainy days | 18 | 15 | 18 | 19 | 19 | 19 | 17 | 14 | 12 | 8 | 11 | 11 |
| Snow days | 0 | 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