Average temperature in December is -16.3 °C
Average daytime temperature is -12.1 °C
Average night temperature is -20.3 °C
Absolute maximum temperature: 0.1 °C
Absolute minimum temperature: -32.8 °C
Number of sunny days: 24
Number of rainy days: 1
Number of snow days: 6
Precipitation sum: 7 mm
* Weather data for Altan Mongolia 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 | -7.1 | -3.9 | -3.8 | 0.1 | -8.6 | -1.5 | -1.3 | -11.6 | -12.4 | -13.6 | -14.9 | -16.1 | -23.4 | -28.8 | -23.8 | -18.8 | -18.3 | -25.7 | -23.5 | -17.6 | -16.4 | -18.5 | -11.4 | -6.5 | -10.4 | -5.5 | -5.2 | -4 | -10.7 | -4.8 | -7.9 |
| Apparent max temperature | -11.6 | -8.9 | -8.6 | -7.8 | -14.5 | -7.8 | -10.2 | -16.8 | -17.2 | -17.9 | -19.3 | -20.3 | -29.4 | -34 | -28.2 | -23.3 | -22.9 | -31.7 | -28 | -23.9 | -20.9 | -23.6 | -16.6 | -11 | -14.4 | -9.3 | -9.5 | -9.1 | -14.8 | -9.9 | -12.3 |
| Mean temperature | -11.6 | -9.6 | -8.4 | -7.7 | -11.7 | -4.5 | -10.3 | -16.3 | -16.7 | -18.1 | -17.8 | -20.5 | -27.4 | -30.2 | -26.2 | -21.9 | -23.6 | -28.5 | -26.7 | -20.4 | -20.3 | -21 | -15.1 | -12 | -13.8 | -10.7 | -9.7 | -9.2 | -13.3 | -9.5 | -12.9 |
| Apparent mean temperature | -19.6 | -18.2 | -17.8 | -18.1 | -21 | -16.1 | -22.1 | -24.2 | -24.1 | -25.8 | -26.7 | -30.2 | -37 | -38.1 | -34.9 | -30.9 | -35.1 | -35.8 | -34.6 | -31.4 | -29.1 | -28.2 | -25.5 | -20.7 | -21.3 | -18.1 | -17.6 | -20.8 | -21.6 | -20.7 | -21.5 |
| Minimum temperature | -15 | -12.8 | -12.8 | -13.4 | -16.5 | -10.4 | -17.6 | -19 | -19.2 | -20.8 | -21.8 | -25 | -31.5 | -32.8 | -29.3 | -25.7 | -29.2 | -30.1 | -29.2 | -26.1 | -23.5 | -22.7 | -19.9 | -15.9 | -16.1 | -13.2 | -12.9 | -16 | -17.1 | -16 | -17 |
| Apparent min temperature | -16.4 | -14.8 | -14.1 | -13.9 | -17.3 | -10 | -16.1 | -21.4 | -21.3 | -22.9 | -22.4 | -25.2 | -33.1 | -35.3 | -31.1 | -26.8 | -29.3 | -33.9 | -31.7 | -26.3 | -25.2 | -26.2 | -20.3 | -16.7 | -18.4 | -15.3 | -14.5 | -14.1 | -18.5 | -14.6 | -17.9 |
| 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) | 8.7 | 8.6 | 8.6 | 8.6 | 8.6 | 8.5 | 8.5 | 8.5 | 8.5 | 8.5 | 8.4 | 8.4 | 8.4 | 8.4 | 8.4 | 8.4 | 8.4 | 8.4 | 8.4 | 8.4 | 8.4 | 8.4 | 8.4 | 8.4 | 8.4 | 8.4 | 8.4 | 8.4 | 8.4 | 8.4 | 8.4 |
| Sunshine duration (h) | 7.3 | 7.2 | 6.7 | 5.6 | 7.1 | 6 | 4.5 | 7.1 | 7.1 | 7.1 | 7 | 1.8 | 7 | 7 | 7 | 7 | 2.1 | 7 | 7 | 7 | 1 | 6.2 | 7 | 7 | 7 | 7 | 7 | 2.1 | 6.3 | 2.8 | 7.1 |
| Precipitation (mm) | 0 | 0 | 0 | 0.3 | 0 | 0 | 0.7 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0.8 | 0 | 0 | 0 | 1.4 | 0 | 0 | 0 | 0 | 0 | 0 | 2.3 | 0 | 0.6 | 0 |
| Precipitation hours | 0 | 0 | 0 | 3 | 0 | 0 | 4 | 0 | 0 | 0 | 0 | 9 | 0 | 0 | 0 | 0 | 8 | 0 | 0 | 0 | 8 | 0 | 0 | 0 | 0 | 0 | 0 | 11 | 0 | 3 | 0 |
| Wind speed (m/s) | 7.7 | 14.7 | 20.6 | 34.9 | 16 | 19.8 | 38.6 | 12.7 | 8.2 | 9.5 | 9.4 | 8.7 | 14.2 | 10.6 | 10.3 | 11.1 | 20.7 | 14 | 10 | 15.2 | 11.1 | 12.9 | 13.7 | 8.3 | 10 | 9.3 | 13.4 | 15.5 | 16.3 | 15.9 | 14.6 |
In December 2023, the highest daytime temperature in Altan was 0.1°C.
While the minimum temperature at night dropped to -32.8°C.
The average nighttime and daytime temperatures during December in Altan are -20.3°C and -12.1°C respectively.
The precipitation sum in December is about 7 mm.