Average annual temperature is 16.4 °C
Absolute maximum temperature: 35.2 °C
Absolute minimum temperature: -5.2 °C
Number of sunny days: 165 days
Number of rainy days: 199 days
Number of snow days: 1 day
Look at detailed online map of Walnut Grove
* Weather data for Walnut Grove 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 | 25.4 | 24.7 | 27.3 | 30.8 | 34.4 | 35.1 | 35.2 | 32.0 | 29.5 | 26.2 | 21.1 |
| Average daytime temperature (°C) | 12.9 | 16.0 | 16.7 | 20.4 | 25.5 | 29.4 | 31.2 | 30.1 | 28.4 | 23.1 | 17.6 | 13.1 |
| Average temperature (°C) | 8.2 | 10.4 | 11.2 | 14.8 | 19.4 | 23.1 | 25.4 | 24.8 | 22.4 | 17.4 | 11.5 | 7.9 |
| Average night temperature (°C) | 4.7 | 6.5 | 6.7 | 10.0 | 14.1 | 17.6 | 20.8 | 20.4 | 17.3 | 12.7 | 7.0 | 3.9 |
| Absolute minimum temperature (°C) | -4.6 | -5.1 | -5.2 | 4.0 | 5.3 | 13.0 | 16.5 | 15.4 | 12.7 | 4.4 | -3.5 | -4.4 |
| 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) | 10.1 | 10.9 | 12.0 | 13.1 | 14.0 | 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) | 5.2 | 6.1 | 8.2 | 8.9 | 11.1 | 11.5 | 10.9 | 9.8 | 10.6 | 8.2 | 7.4 | 6.9 |
| Precipitation (mm) | 172 | 157 | 139 | 134 | 88 | 101 | 150 | 161 | 24 | 17 | 51 | 88 |
| Sunny days | 10 | 11 | 18 | 15 | 9 | 11 | 4 | 12 | 15 | 19 | 22 | 19 |
| Rainy days | 20 | 17 | 13 | 15 | 22 | 19 | 27 | 19 | 15 | 12 | 8 | 12 |
| Snow days | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Walnut Grove during the most sunny months:
The largest precipitation sum in Walnut Grove is at