Average annual temperature is 9.7 °C
Absolute maximum temperature: 36.4 °C
Absolute minimum temperature: -27.3 °C
Number of sunny days: 200 days
Number of rainy days: 129 days
Number of snow days: 36 days
Look at detailed online map of Winnebago County
* Weather data for Winnebago 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) | 4.4 | 9.5 | 16.9 | 27.5 | 31.3 | 31.2 | 33.7 | 36.4 | 33.8 | 30.3 | 18.1 | 11.5 |
| Average daytime temperature (°C) | -3.1 | 0.2 | 5.0 | 14.7 | 24.0 | 28.4 | 27.8 | 28.1 | 25.7 | 15.9 | 9.1 | 5.1 |
| Average temperature (°C) | -6.9 | -5.6 | -0.8 | 8.2 | 17.4 | 22.4 | 22.0 | 22.6 | 19.9 | 11.2 | 3.7 | 0.7 |
| Average night temperature (°C) | -10.2 | -10.4 | -4.8 | 3.4 | 11.3 | 16.8 | 16.7 | 18.1 | 15.1 | 7.5 | -0.1 | -2.3 |
| Absolute minimum temperature (°C) | -26.0 | -27.3 | -15.3 | -5.5 | 0.4 | 9.7 | 10.7 | 12.1 | 9.1 | -5.4 | -12.5 | -7.8 |
| 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) | 9.4 | 10.5 | 11.9 | 13.4 | 14.7 | 15.3 | 15.0 | 13.9 | 12.5 | 11.0 | 9.7 | 9.0 |
| 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 | 8.0 |
| Sunshine mean duration (h) | 3.8 | 6.7 | 6.9 | 8.6 | 11.7 | 12.2 | 12.3 | 11.4 | 9.8 | 7.2 | 6.8 | 4.6 |
| Precipitation (mm) | 64 | 48 | 51 | 89 | 84 | 53 | 50 | 66 | 53 | 145 | 6 | 46 |
| Sunny days | 19 | 15 | 12 | 15 | 19 | 15 | 13 | 20 | 17 | 15 | 22 | 18 |
| Rainy days | 6 | 6 | 8 | 14 | 12 | 15 | 18 | 11 | 13 | 13 | 6 | 7 |
| Snow days | 6 | 7 | 11 | 1 | 0 | 0 | 0 | 0 | 0 | 3 | 2 | 6 |
The best time to visit Winnebago County during the most sunny months:
Months with the longest average daylight duration in Winnebago County:
The largest precipitation sum in Winnebago County is at