Average temperature in December is -18.8 °C
Average daytime temperature is -13.1 °C
Average night temperature is -24.2 °C
Absolute maximum temperature: -3 °C
Absolute minimum temperature: -33 °C
Number of sunny days: 25
Number of rainy days:
Number of snow days: 6
Precipitation sum: 4 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 | -7.6 | -5.2 | -3.6 | -3 | -5.6 | -10.8 | -8.2 | -16.4 | -17.8 | -18.3 | -16.5 | -20.9 | -19.9 | -19.6 | -22.3 | -20.9 | -18.7 | -20.3 | -22.5 | -20.7 | -17.1 | -14.9 | -13.3 | -7.9 | -5.8 | -11.6 | -8.4 | -3.8 | -8.6 | -7.2 | -7.9 |
| Apparent max temperature | -12.9 | -9.2 | -9.2 | -8.5 | -11.5 | -15.9 | -12.3 | -23.6 | -23.5 | -22.8 | -21.5 | -25.3 | -24.2 | -23.8 | -27.8 | -26.9 | -23.9 | -24.9 | -28.2 | -26.8 | -21.7 | -19.8 | -18 | -12.6 | -11.5 | -16 | -12.6 | -8 | -12.7 | -11.3 | -13.8 |
| Mean temperature | -13.4 | -11 | -10.6 | -6.5 | -12.7 | -16 | -11.5 | -20.3 | -23 | -22.4 | -20.7 | -24.3 | -22.3 | -21.7 | -27 | -26.5 | -25.4 | -26.6 | -29 | -27.4 | -24.1 | -23.2 | -19.9 | -15.6 | -16 | -18 | -15.8 | -11.5 | -10.5 | -14.6 | -14.6 |
| Apparent mean temperature | -23.2 | -21.1 | -21.6 | -21.2 | -26.5 | -25.9 | -23.4 | -30 | -33.5 | -33.7 | -28.1 | -30.6 | -31.5 | -30.1 | -36.2 | -36.2 | -36.8 | -37.3 | -38.7 | -38.8 | -35.7 | -33.9 | -32.9 | -29.6 | -28.3 | -29.4 | -28.8 | -23.7 | -20.6 | -25.8 | -26.2 |
| Minimum temperature | -17.5 | -15.8 | -16 | -15.5 | -20.8 | -20.3 | -17.6 | -24.3 | -28.3 | -28.5 | -23.8 | -26.2 | -27 | -25 | -30.3 | -30.2 | -31 | -30.9 | -32.9 | -33 | -30.1 | -27.6 | -26.8 | -23.7 | -23.1 | -23.9 | -23.2 | -18.2 | -16 | -20.5 | -20.7 |
| Apparent min temperature | -18.8 | -16 | -16.1 | -12 | -18.9 | -21.3 | -16.4 | -26.9 | -28.5 | -27.1 | -25.4 | -28.7 | -26.9 | -26.2 | -32.7 | -32.5 | -30.9 | -32.1 | -34.9 | -33.2 | -29.5 | -28.6 | -25.6 | -21.1 | -21.7 | -23.2 | -21 | -16.2 | -14.7 | -19.4 | -20.4 |
| 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) | 8.6 | 8.6 | 8.6 | 8.5 | 8.5 | 8.5 | 8.5 | 8.4 | 8.4 | 8.4 | 8.4 | 8.4 | 8.4 | 8.3 | 8.3 | 8.3 | 8.3 | 8.3 | 8.3 | 8.3 | 8.3 | 8.3 | 8.3 | 8.3 | 8.3 | 8.3 | 8.3 | 8.3 | 8.3 | 8.3 | 8.4 |
| Sunshine duration (h) | 7.3 | 7.2 | 7.2 | 7.2 | 7.2 | 7 | 5.4 | 7.1 | 7.1 | 7 | 5 | 7 | 6.6 | 5.9 | 6.6 | 7 | 7 | 6.9 | 7 | 7 | 7 | 6.9 | 6.9 | 6.9 | 6.9 | 6.9 | 6.9 | 6.9 | 0 | 6.4 | 1.7 |
| Precipitation (mm) | 0 | 0 | 0 | 0 | 0 | 0 | 0.9 | 0 | 0 | 0.2 | 0.2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.2 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0.1 |
| Precipitation hours | 0 | 0 | 0 | 0 | 0 | 0 | 5 | 0 | 0 | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 12 | 0 | 1 |
| Wind speed (m/s) | 14.4 | 13 | 21.1 | 20.5 | 21 | 12.6 | 18.4 | 25.9 | 17.6 | 7.7 | 10.1 | 4.5 | 9.1 | 7.1 | 14.6 | 18.4 | 14.5 | 15.4 | 15.6 | 14.9 | 11.8 | 15.3 | 14.5 | 14.6 | 16.9 | 13.3 | 13.2 | 12.9 | 10.4 | 10.5 | 24 |
In December 2023, the highest daytime temperature in Bayan was -3°C.
While the minimum temperature at night dropped to -33°C.
The average nighttime and daytime temperatures during December in Bayan are -24.2°C and -13.1°C respectively.
The precipitation sum in December is about 4 mm.