Average annual temperature is 11.1 °C
Absolute maximum temperature: 40.4 °C
Absolute minimum temperature: -14.3 °C
Number of sunny days: 241 days
Number of rainy days: 89 days
Number of snow days: 35 days
Look at detailed online map of Herrin
* Weather data for Herrin 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) | 8.2 | 12.7 | 13.4 | 28.5 | 30.6 | 32.1 | 40.4 | 35.8 | 31.4 | 25.4 | 20.1 | 10.2 |
| Average daytime temperature (°C) | 2.6 | 5.8 | 6.8 | 16.5 | 23.0 | 25.5 | 36.0 | 32.0 | 26.3 | 18.1 | 9.9 | 5.5 |
| Average temperature (°C) | -2.2 | -0.8 | 1.1 | 8.8 | 16.6 | 19.2 | 29.1 | 25.2 | 18.9 | 11.3 | 4.5 | 0.5 |
| Average night temperature (°C) | -5.6 | -5.6 | -3.5 | 2.0 | 9.7 | 12.8 | 20.8 | 18.1 | 11.4 | 4.9 | -1.0 | -3.7 |
| Absolute minimum temperature (°C) | -14.3 | -12.4 | -9.8 | -12.6 | 0.6 | 6.1 | 17.6 | 12.7 | 4.2 | -5.0 | -11.3 | -10.4 |
| 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 | 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 | 14.8 | 13.8 | 12.5 | 11.1 | 9.9 | 9.3 |
| 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) | 6.3 | 8.3 | 8.7 | 11.2 | 11.9 | 13.0 | 13.4 | 12.0 | 10.8 | 9.0 | 8.2 | 6.6 |
| Precipitation (mm) | 37 | 14 | 48 | 16 | 37 | 9 | 0 | 13 | 32 | 17 | 13 | 9 |
| Sunny days | 11 | 16 | 8 | 23 | 14 | 20 | 30 | 25 | 23 | 25 | 22 | 24 |
| Rainy days | 8 | 4 | 13 | 4 | 17 | 10 | 1 | 6 | 7 | 6 | 7 | 6 |
| Snow days | 12 | 8 | 10 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 |
The best time to visit Herrin during the most sunny months:
The largest precipitation sum in Herrin is at