Average annual temperature is 11.3 °C
Absolute maximum temperature: 32.4 °C
Absolute minimum temperature: -15.7 °C
Number of sunny days: 180 days
Number of rainy days: 171 days
Number of snow days: 14 days
Look at detailed online map of DeKalb County
* Weather data for DeKalb County 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) | 15.9 | 15.8 | 17.0 | 25.9 | 30.7 | 32.2 | 32.4 | 32.4 | 31.5 | 28.3 | 18.0 | 14.9 |
| Average daytime temperature (°C) | 3.9 | 6.9 | 7.9 | 16.4 | 21.9 | 26.9 | 28.6 | 26.7 | 23.9 | 16.7 | 9.9 | 7.3 |
| Average temperature (°C) | 0.6 | 1.2 | 2.7 | 9.7 | 15.5 | 20.6 | 23.1 | 21.4 | 18.7 | 12.2 | 4.8 | 3.9 |
| Average night temperature (°C) | -2.2 | -2.7 | -1.1 | 4.0 | 9.4 | 14.8 | 17.9 | 16.6 | 14.1 | 8.5 | 1.0 | 1.4 |
| Absolute minimum temperature (°C) | -15.2 | -15.7 | -8.3 | -4.0 | 2.1 | 9.7 | 14.6 | 10.5 | 8.4 | -3.8 | -7.9 | -4.3 |
| 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 | 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 | 9.2 |
| 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) | 3.2 | 7.4 | 6.9 | 9.1 | 10.6 | 11.1 | 11.9 | 10.6 | 9.0 | 6.8 | 6.8 | 4.0 |
| Precipitation (mm) | 69 | 106 | 167 | 88 | 51 | 59 | 77 | 89 | 35 | 96 | 22 | 65 |
| Sunny days | 12 | 16 | 12 | 16 | 19 | 17 | 10 | 14 | 18 | 10 | 24 | 12 |
| Rainy days | 13 | 10 | 14 | 14 | 12 | 13 | 21 | 17 | 12 | 20 | 6 | 19 |
| Snow days | 6 | 2 | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 |
The best time to visit DeKalb County during the most sunny months:
The largest precipitation sum in DeKalb County is at