Average annual temperature is 11.5 °C
Absolute maximum temperature: 37.2 °C
Absolute minimum temperature: -23.2 °C
Number of sunny days: 196 days
Number of rainy days: 154 days
Number of snow days: 15 days
Look at detailed online map of Somonauk
* Weather data for Somonauk 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) | 10.7 | 14.9 | 20.6 | 25.9 | 32.2 | 33.5 | 34.5 | 37.2 | 34.4 | 28.1 | 19.8 | 14.5 |
| Average daytime temperature (°C) | 2.9 | 5.6 | 8.4 | 17.2 | 24.0 | 29.0 | 28.7 | 28.5 | 24.9 | 17.3 | 9.9 | 6.7 |
| Average temperature (°C) | -1.0 | 0.1 | 3.0 | 10.0 | 17.0 | 22.2 | 23.1 | 22.7 | 19.6 | 12.6 | 4.8 | 3.0 |
| Average night temperature (°C) | -4.0 | -4.2 | -0.8 | 3.8 | 10.8 | 15.8 | 18.0 | 17.7 | 15.3 | 8.7 | 0.6 | 0.3 |
| Absolute minimum temperature (°C) | -23.2 | -19.9 | -11.9 | -2.9 | 1.4 | 8.7 | 13.7 | 11.5 | 9.4 | -2.6 | -10.7 | -8.0 |
| 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) | 9.6 | 10.6 | 11.9 | 13.3 | 14.5 | 15.1 | 14.9 | 13.8 | 12.5 | 11.1 | 9.9 | 9.2 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 14.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 3.4 | 7.6 | 6.5 | 9.1 | 10.7 | 12.4 | 11.9 | 10.8 | 8.3 | 7.0 | 7.1 | 4.1 |
| Precipitation (mm) | 58 | 76 | 105 | 87 | 46 | 18 | 157 | 80 | 135 | 93 | 37 | 64 |
| Sunny days | 13 | 16 | 14 | 14 | 20 | 20 | 16 | 16 | 14 | 13 | 23 | 17 |
| Rainy days | 10 | 9 | 16 | 16 | 11 | 10 | 15 | 15 | 16 | 17 | 6 | 13 |
| Snow days | 8 | 3 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 |
The best time to visit Somonauk during the most sunny months:
The largest precipitation sum in Somonauk is at