Average temperature in December is 4.6 °C
Average daytime temperature is 9.1 °C
Average night temperature is 1.6 °C
Absolute maximum temperature: 16.1 °C
Absolute minimum temperature: -7.8 °C
Number of sunny days: 16
Number of rainy days: 15
Number of snow days:
Precipitation sum: 66 mm
* Weather data for Janesville United States is based on climate observations for 2023 year
| Dicembre (°C) | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Maximum temperature | 12.4 | 10.7 | 6.7 | 7.8 | 9 | 5.8 | 13.3 | 15.1 | 14.3 | 7.6 | 5.3 | 7.8 | 7.2 | 10.8 | 11.8 | 8.7 | 8.7 | 5.4 | 2 | 8.5 | 10.6 | 10.2 | 13.8 | 16.1 | 13.8 | 12.7 | 7.3 | 5.4 | 4 | 6.5 | 2.7 |
| Apparent max temperature | 10.8 | 9.3 | 4.5 | 4.3 | 4.4 | 1.9 | 9 | 11.2 | 11.7 | 3 | 0.9 | 3.9 | 4.2 | 6.8 | 8.1 | 5.7 | 5.8 | 1.7 | -3.6 | 3.8 | 6.8 | 6.6 | 12.2 | 13.8 | 11.3 | 10.1 | 3 | 1.9 | 0.4 | 2.2 | -1.4 |
| Mean temperature | 7.7 | 7 | 5.1 | 2.8 | 4.1 | 2.3 | 5.3 | 10.6 | 11.9 | 2.6 | -1.7 | 2.2 | 1.5 | 2 | 4.6 | 7.1 | 6.5 | 0.6 | -3.8 | 1.3 | 5.5 | 7.3 | 9.6 | 11.6 | 12.5 | 6.5 | 2.4 | 3 | 1.6 | 1.8 | 0.9 |
| Apparent mean temperature | 1.3 | 1.6 | 0.4 | -3.7 | -2.2 | -5.9 | -3.7 | 2 | 4.3 | -5.6 | -9.3 | -5.6 | -6.5 | -7.8 | -3.9 | 1.5 | 0.3 | -9.7 | -11.9 | -7.4 | -1.4 | 1.8 | 3.7 | 7.6 | 7.8 | -0.9 | -4.6 | -2.4 | -3.9 | -6.6 | -6.8 |
| Minimum temperature | 5.5 | 4.4 | 3 | -0.3 | 1.2 | -2.4 | 1.5 | 7.3 | 8.8 | -0.4 | -5.6 | -1.5 | -2.6 | -3.4 | 0.5 | 5.6 | 4 | -2 | -7.8 | -2.2 | 2.3 | 5.9 | 7.2 | 9.2 | 11.4 | 2.9 | -0.9 | 2 | 0.4 | -2.9 | -0.7 |
| Apparent min temperature | 4.5 | 4.7 | 1.6 | -0.9 | 0.2 | -2 | 0.6 | 5.6 | 8.2 | -2.5 | -5.6 | -2.1 | -2.3 | -2.1 | 0.5 | 3.2 | 3.4 | -5.7 | -8.8 | -3.9 | 1.6 | 3.5 | 7.2 | 9.9 | 9 | 3 | -1.5 | -1 | -2.5 | -2.3 | -4 |
| Dicembre | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight duration (h) | 9.6 | 9.6 | 9.6 | 9.5 | 9.5 | 9.5 | 9.5 | 9.5 | 9.5 | 9.5 | 9.4 | 9.4 | 9.4 | 9.4 | 9.4 | 9.4 | 9.4 | 9.4 | 9.4 | 9.4 | 9.4 | 9.4 | 9.4 | 9.4 | 9.4 | 9.4 | 9.4 | 9.4 | 9.4 | 9.4 | 9.4 |
| Sunshine duration (h) | 0.4 | 0.1 | 1.8 | 7 | 7.5 | 8 | 8.5 | 7.5 | 5.3 | 3.6 | 8.4 | 8.4 | 8.2 | 8.4 | 8.4 | 0.1 | 0 | 7.2 | 7.9 | 8.3 | 6.7 | 2 | 2.6 | 7.3 | 0 | 8.1 | 3.6 | 0 | 0 | 8.2 | 4.7 |
| Precipitation (mm) | 9.4 | 1.1 | 11.1 | 0.4 | 0.7 | 0 | 0 | 0 | 1.6 | 0 | 0 | 0 | 0 | 0 | 0 | 7.4 | 3.8 | 0 | 0 | 0 | 0.1 | 1.6 | 2.4 | 0 | 13.3 | 2 | 0 | 3.4 | 8 | 0 | 0 |
| Precipitation hours | 13 | 4 | 12 | 3 | 6 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 11 | 7 | 0 | 0 | 0 | 1 | 5 | 7 | 0 | 10 | 3 | 0 | 13 | 17 | 0 | 0 |
| Wind speed (m/s) | 20.1 | 16.3 | 24.7 | 14.3 | 21.7 | 24.3 | 20.3 | 24.4 | 29.3 | 21.7 | 12.2 | 15.1 | 9.7 | 12.5 | 13.5 | 18.2 | 17.4 | 38.4 | 20.9 | 17.4 | 12.5 | 15.2 | 17.7 | 17.1 | 32.1 | 21.4 | 16.4 | 17.6 | 17.5 | 16.4 | 25.5 |
In December 2023, the highest daytime temperature in Janesville was 16.1°C.
While the minimum temperature at night dropped to -7.8°C.
The average nighttime and daytime temperatures during December in Janesville are 1.6°C and 9.1°C respectively.
The precipitation sum in December is about 66 mm.