Average temperature in December is -4.6 °C
Average daytime temperature is 3.8 °C
Average night temperature is -10.1 °C
Absolute maximum temperature: 12.3 °C
Absolute minimum temperature: -18.3 °C
Number of sunny days: 21
Number of rainy days: 3
Number of snow days: 7
Precipitation sum: 18 mm
* Weather data for Hillside United States is based on climate observations for 2023 year
| December (°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 | 2.2 | -2.4 | 3.6 | 6.3 | 10.1 | 12.3 | 9.7 | -0.8 | -2.7 | 6.7 | 3.7 | 2.7 | -1.6 | 0.6 | 3.8 | 7 | 7 | 5.9 | 6.8 | 7.4 | 6.4 | 4.8 | 4.3 | 1.1 | -4.4 | -0.2 | 1.4 | 3 | 5 | 5.4 | 3.8 |
| Apparent max temperature | -1.3 | -8 | -0.7 | 2.1 | 6.3 | 8 | 4.3 | -5.7 | -6.6 | 2.8 | 0.1 | -1.5 | -5.3 | -2.2 | 0.1 | 3.1 | 3.1 | 1.8 | 3.1 | 3.8 | 3.5 | 1 | 1.1 | -3 | -10.1 | -5.3 | -2.1 | -1.5 | 1 | 1.3 | 0 |
| Mean temperature | -5 | -7.8 | -4.7 | -2.9 | -1.9 | 0.3 | 0.6 | -3.6 | -5.9 | -8.6 | -4.5 | -5.7 | -4.8 | -3.7 | -7.4 | -6.5 | -4.1 | -6.2 | -2.4 | -1.8 | -1.9 | -4 | -0.1 | -4.8 | -10.1 | -8.1 | -3.6 | -7.5 | -5.4 | -5.8 | -5.1 |
| Apparent mean temperature | -14 | -17.3 | -16.9 | -12.5 | -12.7 | -10.3 | -8.6 | -10.3 | -12.1 | -22.9 | -14.4 | -14.8 | -10.7 | -10.5 | -18.3 | -18.3 | -14.8 | -18.8 | -11.7 | -10.5 | -10.5 | -13.8 | -9.9 | -11.3 | -23.3 | -18.7 | -13.4 | -18.6 | -16.8 | -16.5 | -14.9 |
| Minimum temperature | -9.7 | -12.4 | -11.7 | -8.3 | -8.6 | -5.9 | -4.1 | -6.4 | -7.7 | -17.4 | -9.6 | -10.8 | -6.9 | -6.8 | -13.8 | -13.5 | -10.4 | -14.4 | -7.2 | -6.6 | -6.6 | -9.6 | -5.8 | -7.9 | -18.3 | -14 | -8.5 | -14 | -12 | -12.1 | -10.6 |
| Apparent min temperature | -9 | -12.8 | -9.5 | -7.1 | -5.8 | -3.8 | -4.1 | -8 | -10.3 | -13.4 | -8.9 | -9.5 | -8.4 | -7 | -11.6 | -10.9 | -8.2 | -10.3 | -6.6 | -5.7 | -5.5 | -7.9 | -3.4 | -8.8 | -14.8 | -13.2 | -8.2 | -12 | -9.8 | -10.1 | -9.2 |
| December | 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) | 9.7 | 9.7 | 9.7 | 9.7 | 9.6 | 9.6 | 9.6 | 9.6 | 9.6 | 9.6 | 9.6 | 9.5 | 9.5 | 9.5 | 9.5 | 9.5 | 9.5 | 9.5 | 9.5 | 9.5 | 9.5 | 9.5 | 9.5 | 9.5 | 9.5 | 9.5 | 9.5 | 9.5 | 9.5 | 9.5 | 9.5 |
| Sunshine duration (h) | 7.9 | 8.5 | 8.2 | 8.5 | 8.6 | 8.6 | 8.6 | 8.5 | 8.3 | 8.4 | 8.5 | 5 | 3.8 | 7.8 | 8.4 | 8.5 | 8.3 | 8.5 | 8.2 | 8.2 | 8.2 | 8.5 | 8.1 | 6.2 | 8.2 | 8.2 | 8.2 | 8.4 | 8.5 | 8.5 | 8.3 |
| Precipitation (mm) | 0.8 | 0.6 | 0 | 0 | 0 | 0 | 0 | 1.2 | 6.2 | 0 | 0 | 0 | 3 | 2.8 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1.6 | 0.7 | 0.4 | 0.2 | 0 | 0 | 0 | 0 | 0 |
| Precipitation hours | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 3 | 9 | 0 | 0 | 0 | 18 | 8 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 5 | 6 | 4 | 2 | 0 | 0 | 0 | 0 | 0 |
| Wind speed (m/s) | 7 | 22 | 16.2 | 11.9 | 8.2 | 10.5 | 17.2 | 13.6 | 11.8 | 13.2 | 11.6 | 6.5 | 10.5 | 5.8 | 8.7 | 10.7 | 7.9 | 7.3 | 11.6 | 9.9 | 8.2 | 7.7 | 10 | 12 | 18.1 | 21.5 | 16.1 | 9.7 | 8.9 | 9.6 | 7.9 |
In December 2023, the highest daytime temperature in Hillside was 12.3°C.
While the minimum temperature at night dropped to -18.3°C.
The average nighttime and daytime temperatures during December in Hillside are -10.1°C and 3.8°C respectively.
The precipitation sum in December is about 18 mm.