Average temperature in December is -18.8 °C
Average daytime temperature is -13.7 °C
Average night temperature is -23.2 °C
Absolute maximum temperature: 0.9 °C
Absolute minimum temperature: -35.8 °C
Number of sunny days: 23
Number of rainy days: 2
Number of snow days: 6
Precipitation sum: 11 mm
* Weather data for Bayan 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 | -5.6 | 0.9 | -8.8 | -1.2 | -1.9 | -18.1 | -17.6 | -20 | -20.2 | -20.5 | -23.5 | -27.2 | -25.6 | -20.7 | -17.8 | -23.1 | -26.1 | -23.2 | -18 | -17.6 | -12.1 | -8.5 | -10 | -7.6 | -6.6 | -4.6 | -9.8 | -6.8 | -10.5 |
| Apparent max temperature | -11.2 | -8.9 | -11.3 | -6.2 | -16.1 | -7.2 | -8.6 | -23.6 | -22.4 | -24.6 | -24.7 | -25.2 | -28.2 | -32.1 | -31.2 | -25.9 | -22.3 | -27.8 | -31 | -27.6 | -22.4 | -22.3 | -17.7 | -13.2 | -14.1 | -11.7 | -10.6 | -8.8 | -15.7 | -11.7 | -16 |
| Mean temperature | -12.8 | -10.1 | -9.3 | -6.9 | -14.2 | -3.2 | -12.9 | -22.9 | -21.7 | -22.6 | -22.9 | -23.3 | -27.7 | -32.7 | -31.1 | -25.2 | -20.4 | -30.3 | -31.4 | -25.9 | -23.3 | -23.7 | -17.7 | -15.8 | -16.6 | -14.1 | -10.8 | -10 | -15.7 | -10.7 | -17 |
| Apparent mean temperature | -23.8 | -21.5 | -19 | -22.2 | -23.1 | -15.3 | -29.1 | -31.7 | -29.9 | -29.7 | -29.3 | -31.1 | -37.8 | -41.6 | -41 | -37.6 | -28 | -40.7 | -40.5 | -37.8 | -31.4 | -32.5 | -27 | -25.5 | -25.1 | -23.1 | -18.4 | -20.8 | -26.7 | -25.5 | -28.3 |
| Minimum temperature | -17.9 | -15.5 | -13.4 | -15.3 | -17.1 | -8.5 | -23.4 | -26.8 | -24.9 | -25.2 | -25 | -25.9 | -32.4 | -35.8 | -35 | -31.7 | -22.9 | -34.8 | -34.7 | -32.8 | -25.7 | -26.5 | -21.4 | -19.5 | -19.6 | -17.3 | -13.5 | -15.1 | -21.2 | -19.9 | -21.8 |
| Apparent min temperature | -18 | -15.5 | -14.5 | -13.8 | -20.3 | -9.8 | -19.2 | -27.9 | -26.3 | -27.1 | -27.3 | -28 | -32.9 | -38.2 | -37 | -30.7 | -25.1 | -35.8 | -36.6 | -30.6 | -28.5 | -29.3 | -23.3 | -21.5 | -21.9 | -19.4 | -15.5 | -15.1 | -21.2 | -15.8 | -22.9 |
| 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) | 8.5 | 8.5 | 8.4 | 8.4 | 8.4 | 8.4 | 8.3 | 8.3 | 8.3 | 8.3 | 8.2 | 8.2 | 8.2 | 8.2 | 8.2 | 8.2 | 8.2 | 8.2 | 8.2 | 8.2 | 8.2 | 8.2 | 8.2 | 8.2 | 8.2 | 8.2 | 8.2 | 8.2 | 8.2 | 8.2 | 8.2 |
| Sunshine duration (h) | 7.2 | 7.1 | 7.1 | 6.1 | 7.1 | 6.2 | 0.1 | 7 | 6.9 | 6.9 | 6.8 | 6.2 | 6.2 | 6.7 | 6.7 | 6.7 | 0 | 5.9 | 6.8 | 6.8 | 6.7 | 6.7 | 5.3 | 6.8 | 6.2 | 6.8 | 6.8 | 6.8 | 0.1 | 6.8 | 6.9 |
| Precipitation (mm) | 0 | 0 | 0 | 0.8 | 0 | 0 | 3.2 | 0 | 0 | 0 | 0 | 0.1 | 0 | 0 | 0 | 0 | 3 | 0.3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.5 | 2 | 1.5 | 0 |
| Precipitation hours | 0 | 0 | 0 | 3 | 0 | 0 | 5 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 21 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 5 | 11 | 7 | 0 |
| Wind speed (m/s) | 13.7 | 16.7 | 16.6 | 34.9 | 26.3 | 30.4 | 30.2 | 11.6 | 7.2 | 6.4 | 4.2 | 8.4 | 8.7 | 12.6 | 13.7 | 12.9 | 7.7 | 12 | 11.4 | 5.6 | 11.2 | 14.2 | 15.1 | 16.5 | 13.3 | 13.5 | 10.9 | 14.3 | 20.3 | 18.4 | 17.8 |
In December 2023, the highest daytime temperature in Bayan was 0.9°C.
While the minimum temperature at night dropped to -35.8°C.
The average nighttime and daytime temperatures during December in Bayan are -23.2°C and -13.7°C respectively.
The precipitation sum in December is about 11 mm.