Average annual temperature is 10.7 °C
Absolute maximum temperature: 36.7 °C
Absolute minimum temperature: -26.7 °C
Number of sunny days: 181 days
Number of rainy days: 164 days
Number of snow days: 20 days
Look at detailed online map of Stephenson County
* Weather data for Stephenson 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) | 9.3 | 11.2 | 19.4 | 25.3 | 31.5 | 33.1 | 33.9 | 36.7 | 33.5 | 27.6 | 18.3 | 13.0 |
| Average daytime temperature (°C) | 1.8 | 3.8 | 7.1 | 15.6 | 23.5 | 28.7 | 29.0 | 28.1 | 24.6 | 16.2 | 8.7 | 5.8 |
| Average temperature (°C) | -2.1 | -1.7 | 1.8 | 9.1 | 16.5 | 21.8 | 23.2 | 22.5 | 19.3 | 11.8 | 3.9 | 2.2 |
| Average night temperature (°C) | -5.0 | -6.2 | -2.3 | 3.8 | 10.0 | 15.3 | 17.7 | 17.6 | 15.1 | 8.0 | 0.0 | -0.4 |
| Absolute minimum temperature (°C) | -26.7 | -23.2 | -13.5 | -2.3 | 0.7 | 6.4 | 13.1 | 9.9 | 7.9 | -2.9 | -12.2 | -8.3 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.5 | 10.6 | 11.9 | 13.4 | 14.6 | 15.2 | 14.9 | 13.9 | 12.5 | 11.1 | 9.8 | 9.1 |
| Daylight minimum duration (h) | 9.0 | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 3.7 | 7.2 | 6.5 | 9.0 | 11.1 | 12.3 | 12.0 | 11.0 | 8.6 | 7.0 | 7.0 | 4.1 |
| Precipitation (mm) | 68 | 89 | 92 | 81 | 46 | 43 | 83 | 42 | 134 | 98 | 40 | 56 |
| Sunny days | 14 | 16 | 12 | 16 | 22 | 15 | 13 | 14 | 11 | 12 | 20 | 16 |
| Rainy days | 8 | 8 | 15 | 14 | 9 | 15 | 18 | 17 | 19 | 18 | 8 | 15 |
| Snow days | 9 | 4 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 2 | 0 |
The best time to visit Stephenson County during the most sunny months:
The largest precipitation sum in Stephenson County is at