Average temperature in December is -14.7 °C
Average daytime temperature is -10.6 °C
Average night temperature is -19.7 °C
Absolute maximum temperature: 3.1 °C
Absolute minimum temperature: -34.7 °C
Number of sunny days: 24
Number of rainy days: 1
Number of snow days: 6
Precipitation sum: 7 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 | -7.4 | -0.3 | -1.5 | 3.1 | -5.1 | 2.2 | 2.3 | -9.4 | -12.4 | -14.8 | -15.3 | -16.5 | -21.9 | -25.8 | -20.7 | -17.1 | -18.7 | -24.9 | -20.9 | -15 | -15.9 | -16.9 | -8 | -8.7 | -10.4 | -7.2 | -5.7 | -2.2 | -6.4 | -1.7 | -5.4 |
| Apparent max temperature | -11.7 | -5.4 | -6.2 | -4.5 | -12 | -4.3 | -7.2 | -14.8 | -17.1 | -19.2 | -19.5 | -21.1 | -27.1 | -30.2 | -25.2 | -21.9 | -23.8 | -29.8 | -25.9 | -19.8 | -20.7 | -21 | -12 | -13.2 | -14.9 | -11.5 | -9.9 | -8.8 | -11.1 | -7.1 | -9.6 |
| Mean temperature | -9.9 | -6.7 | -4.5 | -4.9 | -7.5 | -1 | -7.6 | -13.9 | -16.1 | -17 | -17.7 | -19.9 | -24.6 | -27.9 | -24.7 | -19.7 | -23 | -27.5 | -27.5 | -18.2 | -20.9 | -20.6 | -11.8 | -11.8 | -14.5 | -9.6 | -7.9 | -7.5 | -10.9 | -7.5 | -11.5 |
| Apparent mean temperature | -21.4 | -17 | -15.5 | -18.8 | -19.3 | -11.9 | -23.9 | -24.2 | -24.5 | -25.2 | -26.9 | -27.5 | -33 | -37.1 | -35.8 | -27.9 | -31 | -39.2 | -40.8 | -33.1 | -31.9 | -31.4 | -26.4 | -20.5 | -25.6 | -19.3 | -16.5 | -16 | -22.5 | -20.6 | -22.6 |
| Minimum temperature | -15.9 | -11.4 | -9.1 | -13.5 | -13.1 | -4.9 | -17 | -17.6 | -19.4 | -20.2 | -20.9 | -22.6 | -28.2 | -31.5 | -30.2 | -22.6 | -26.2 | -33.3 | -34.7 | -27.4 | -25.8 | -25.6 | -19.9 | -15.5 | -19.7 | -13.9 | -11.6 | -12 | -17.2 | -14.8 | -16.5 |
| Apparent min temperature | -14.7 | -12.5 | -11 | -12.1 | -14.5 | -7.8 | -14.6 | -19.8 | -20.9 | -22.4 | -22.2 | -24.5 | -29.8 | -33 | -29.9 | -24.5 | -27.7 | -32.6 | -33.1 | -23.2 | -26.3 | -25.8 | -16.8 | -16.5 | -20 | -14.2 | -12.1 | -12.8 | -16.9 | -13.1 | -17.4 |
| 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) | 8.8 | 8.8 | 8.8 | 8.7 | 8.7 | 8.7 | 8.7 | 8.6 | 8.6 | 8.6 | 8.6 | 8.6 | 8.6 | 8.6 | 8.5 | 8.5 | 8.5 | 8.5 | 8.5 | 8.5 | 8.5 | 8.5 | 8.5 | 8.5 | 8.5 | 8.5 | 8.5 | 8.5 | 8.5 | 8.6 | 8.6 |
| Sunshine duration (h) | 7.4 | 7.4 | 7.4 | 7.1 | 7.3 | 6.8 | 7.3 | 7.4 | 7.3 | 7.2 | 7.1 | 7.1 | 2.6 | 7.2 | 7.2 | 7.2 | 7.1 | 7.2 | 7.3 | 6.4 | 0 | 7.2 | 7.3 | 7.3 | 7.3 | 7.3 | 7.3 | 5.9 | 7.3 | 5 | 7.3 |
| Precipitation (mm) | 0 | 0 | 0 | 0 | 0 | 0 | 0.3 | 0 | 0 | 0 | 0 | 1.2 | 0.9 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 2.1 | 0 | 0 | 0 | 0 | 0 | 0 | 1.1 | 0 | 0.1 | 0 |
| Precipitation hours | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 12 | 9 | 0 | 0 | 0 | 10 | 0 | 0 | 0 | 9 | 0 | 0 | 0 | 0 | 0 | 0 | 5 | 0 | 1 | 0 |
| Wind speed (m/s) | 10.2 | 21.9 | 31.8 | 46.9 | 28.6 | 28.7 | 52.2 | 19.2 | 10.7 | 27.8 | 14.7 | 9 | 13.6 | 10.6 | 10.5 | 8 | 8.4 | 12 | 14.9 | 10.9 | 18.7 | 16.4 | 17.7 | 8.9 | 15.3 | 11.3 | 8.3 | 30.5 | 24.8 | 19.9 | 25.5 |
In December 2023, the highest daytime temperature in Bayan was 3.1°C.
While the minimum temperature at night dropped to -34.7°C.
The average nighttime and daytime temperatures during December in Bayan are -19.7°C and -10.6°C respectively.
The precipitation sum in December is about 7 mm.