Average annual temperature is 14.9 °C
Absolute maximum temperature: 38.7 °C
Absolute minimum temperature: -11.2 °C
Number of sunny days: 223 days
Number of rainy days: 139 days
Number of snow days: 3 days
Look at detailed online map of Township of Janesville
* Weather data for Township of Janesville 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) | 15.1 | 19.3 | 25.6 | 30.4 | 32.6 | 38.4 | 36.6 | 38.7 | 35.2 | 32.3 | 23.0 | 16.2 |
| Average daytime temperature (°C) | 8.4 | 10.6 | 13.6 | 22.0 | 26.7 | 31.3 | 32.9 | 32.9 | 29.9 | 21.6 | 13.4 | 10.0 |
| Average temperature (°C) | 2.4 | 3.5 | 7.1 | 14.1 | 20.2 | 25.1 | 26.8 | 27.0 | 23.3 | 16.0 | 7.8 | 5.1 |
| Average night temperature (°C) | -1.5 | -1.9 | 2.0 | 7.6 | 14.4 | 19.1 | 21.8 | 21.7 | 17.7 | 11.4 | 3.3 | 1.7 |
| Absolute minimum temperature (°C) | -11.2 | -11.0 | -7.3 | -0.2 | 6.0 | 13.1 | 17.4 | 16.1 | 12.3 | -2.7 | -8.7 | -2.9 |
| 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 | 14.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.9 | 10.8 | 12.0 | 13.2 | 14.2 | 14.8 | 14.5 | 13.6 | 12.4 | 11.2 | 10.1 | 9.6 |
| 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) | 6.6 | 8.0 | 7.9 | 10.6 | 10.3 | 12.4 | 11.8 | 12.2 | 10.3 | 7.9 | 7.3 | 5.2 |
| Precipitation (mm) | 42 | 63 | 42 | 58 | 51 | 50 | 102 | 60 | 34 | 73 | 53 | 84 |
| Sunny days | 21 | 16 | 16 | 19 | 15 | 15 | 16 | 24 | 21 | 19 | 22 | 19 |
| Rainy days | 9 | 12 | 15 | 11 | 16 | 15 | 15 | 7 | 9 | 12 | 7 | 11 |
| Snow days | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 |
The best time to visit Township of Janesville during the most sunny months:
The largest precipitation sum in Township of Janesville is at