Average temperature in December is -8.1 °C
Average daytime temperature is -5.3 °C
Average night temperature is -11.8 °C
Absolute maximum temperature: 5.7 °C
Absolute minimum temperature: -20.4 °C
Number of sunny days: 12
Number of rainy days: 3
Number of snow days: 16
Precipitation sum: 41 mm
* Weather data for Tretten Norway 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 | -10.5 | -10.6 | -13.5 | -12.3 | -13.8 | -14.9 | -12.7 | -4.9 | -0.7 | -1.2 | -2.4 | -3.3 | -4.7 | -10.7 | -4.1 | 5.7 | 3.8 | 2.6 | 3.7 | -5.5 | -4.3 | -3 | -6.9 | -6.9 | -6.4 | -7.2 | -6.7 | -5.1 | -2.6 | -2.8 | -3.2 |
| Apparent max temperature | -15 | -14.3 | -18 | -16.8 | -18.5 | -19.2 | -17.4 | -8.4 | -4.4 | -4.8 | -5.2 | -6.5 | -7.9 | -14.6 | -7.5 | 3 | 0.5 | -0.3 | -1.1 | -9.5 | -8 | -7.9 | -10.8 | -10.6 | -9.7 | -11.7 | -11.2 | -8.2 | -5.8 | -6.2 | -6.5 |
| Mean temperature | -11.5 | -14.6 | -15 | -14.7 | -15.8 | -16.9 | -15.2 | -8 | -2 | -2 | -4.3 | -5 | -6.8 | -12.3 | -8.3 | -0.8 | -1.8 | -0.1 | -5.5 | -8.4 | -6.6 | -6 | -10.6 | -10.4 | -8.6 | -9.5 | -11.3 | -7.4 | -4 | -4.1 | -4.4 |
| Apparent mean temperature | -18 | -25 | -21.4 | -23.4 | -24.1 | -23.6 | -22.7 | -16.8 | -8.2 | -5.8 | -12.2 | -11.8 | -14.8 | -19.2 | -18.8 | -7.1 | -10 | -5.3 | -18.3 | -15.9 | -14.3 | -14.9 | -17.9 | -21.3 | -18.7 | -17.1 | -21.4 | -15.1 | -9.9 | -11.9 | -10.1 |
| Minimum temperature | -13.2 | -20.4 | -16.5 | -18.7 | -19.4 | -19 | -18.3 | -12.1 | -4.7 | -2.8 | -8.4 | -8 | -10.7 | -15 | -14.6 | -3.2 | -5.6 | -1.9 | -13.9 | -11 | -10.5 | -10.1 | -13.1 | -16.5 | -14.6 | -12.8 | -17 | -11.2 | -6.6 | -7.8 | -6.7 |
| Apparent min temperature | -16.1 | -18.7 | -19.6 | -19.5 | -20.6 | -21.5 | -19.9 | -12.2 | -5.5 | -5.3 | -7.6 | -8.3 | -10.3 | -16.3 | -12.4 | -4.4 | -5.4 | -3.3 | -9.5 | -12.7 | -10.5 | -10.4 | -15.2 | -14.6 | -12.4 | -14 | -15.8 | -11 | -7.4 | -7.5 | -8.1 |
| 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) | 6.1 | 6 | 6 | 5.9 | 5.9 | 5.8 | 5.8 | 5.7 | 5.7 | 5.6 | 5.6 | 5.6 | 5.5 | 5.5 | 5.5 | 5.5 | 5.4 | 5.4 | 5.4 | 5.4 | 5.4 | 5.4 | 5.4 | 5.4 | 5.4 | 5.4 | 5.5 | 5.5 | 5.5 | 5.5 | 5.6 |
| Sunshine duration (h) | 3.5 | 1.5 | 2.8 | 3.3 | 3.2 | 2.4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1.7 | 2.5 | 1.3 | 0 | 0 | 2 | 0 | 0.3 | 0 | 2.7 | 0 | 0 | 1.9 | 0 |
| Precipitation (mm) | 0 | 0.3 | 0 | 0 | 0 | 0 | 0 | 0.9 | 5.9 | 2.8 | 0.2 | 1.6 | 0 | 0.1 | 0 | 2.8 | 0.1 | 0 | 0.1 | 1.4 | 7.7 | 0.7 | 0 | 3.6 | 2.7 | 0 | 0 | 4.9 | 2.1 | 0.5 | 2.6 |
| Precipitation hours | 0 | 3 | 0 | 0 | 0 | 0 | 0 | 9 | 24 | 22 | 2 | 16 | 0 | 1 | 0 | 12 | 1 | 0 | 1 | 7 | 17 | 7 | 0 | 14 | 7 | 0 | 0 | 14 | 15 | 5 | 24 |
| Wind speed (m/s) | 10 | 5.4 | 7.6 | 8.7 | 9 | 7.2 | 8.6 | 8.3 | 9.7 | 7.4 | 5 | 4.8 | 4.7 | 6.8 | 7.9 | 11.9 | 8.7 | 10.1 | 14.8 | 10.1 | 9 | 14.5 | 10 | 7.3 | 6.8 | 8.8 | 8.7 | 5.9 | 6 | 5.9 | 8.1 |
In December 2023, the highest daytime temperature in Tretten was 5.7°C.
While the minimum temperature at night dropped to -20.4°C.
The average nighttime and daytime temperatures during December in Tretten are -11.8°C and -5.3°C respectively.
The precipitation sum in December is about 41 mm.