Average temperature in December is -17.6 °C
Average daytime temperature is -13.1 °C
Average night temperature is -21.9 °C
Absolute maximum temperature: -0.4 °C
Absolute minimum temperature: -30.5 °C
Number of sunny days: 22
Number of rainy days: 1
Number of snow days: 8
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 | -5.4 | -9 | -3 | -3.4 | -3.8 | -8.2 | -0.4 | -10.3 | -16.1 | -13.8 | -16.4 | -16.2 | -16.2 | -18.6 | -20.1 | -22.5 | -20.6 | -19.8 | -22 | -21.8 | -18.5 | -20.4 | -18.7 | -9.6 | -5.8 | -12.7 | -13.8 | -12.3 | -10.4 | -7.2 | -9.5 |
| Apparent max temperature | -9.6 | -13.7 | -7.1 | -10.2 | -9.9 | -13.4 | -8 | -15 | -20.8 | -19.1 | -20.9 | -21.9 | -23.4 | -26.4 | -25.4 | -27.7 | -26.3 | -26.3 | -27.1 | -27.3 | -23.6 | -25.3 | -23.7 | -14.3 | -11.5 | -17.4 | -18.3 | -17.3 | -14.7 | -12.4 | -15.3 |
| Mean temperature | -11.5 | -12.4 | -9.5 | -9.6 | -10.3 | -12.6 | -6.9 | -17.4 | -20 | -17.3 | -19 | -19.4 | -18.9 | -20.2 | -25.3 | -27 | -23.8 | -23.4 | -26.7 | -25 | -23.3 | -25.1 | -21.8 | -16.5 | -14.6 | -17 | -15.9 | -15 | -12.2 | -13 | -14.2 |
| Apparent mean temperature | -22.8 | -19.6 | -22.3 | -22.4 | -24 | -21 | -19.1 | -28.4 | -29.6 | -28.8 | -28.8 | -28.8 | -27.7 | -28 | -34.7 | -35.7 | -31.1 | -34 | -36.4 | -34.8 | -32.8 | -34.4 | -30.5 | -26.7 | -26.7 | -27.5 | -23.1 | -22.9 | -21 | -22.8 | -22.8 |
| Minimum temperature | -18.1 | -14.5 | -16.9 | -16.8 | -18.5 | -15.7 | -13.6 | -22.9 | -24.3 | -23.6 | -23.2 | -22.5 | -20.1 | -22.1 | -29 | -29.8 | -26.5 | -28.5 | -30.5 | -28.9 | -26.8 | -28.7 | -25.4 | -20.6 | -21.5 | -22.5 | -17.8 | -17.6 | -15.9 | -17.5 | -17.4 |
| Apparent min temperature | -16.4 | -17.5 | -14.6 | -15.2 | -16.6 | -18 | -12.5 | -22.8 | -24.7 | -22.8 | -23.9 | -25.6 | -26.2 | -26.9 | -30.6 | -32.4 | -28.7 | -29.7 | -32.3 | -30.7 | -28.4 | -30.1 | -26.9 | -21.7 | -20 | -22 | -20.7 | -19.6 | -17 | -18.2 | -19.7 |
| 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) | 8.9 | 8.9 | 8.8 | 8.8 | 8.8 | 8.8 | 8.8 | 8.7 | 8.7 | 8.7 | 8.7 | 8.7 | 8.7 | 8.7 | 8.6 | 8.6 | 8.6 | 8.6 | 8.6 | 8.6 | 8.6 | 8.6 | 8.6 | 8.6 | 8.6 | 8.6 | 8.6 | 8.6 | 8.6 | 8.7 | 8.7 |
| Sunshine duration (h) | 7.3 | 7.6 | 7.4 | 7.5 | 7.5 | 6.5 | 7.4 | 7.4 | 7.4 | 6.2 | 6.1 | 7.1 | 3.7 | 0 | 3.4 | 7.3 | 7 | 2.9 | 7.3 | 7.3 | 7.3 | 7.3 | 7.4 | 7.3 | 7.4 | 7.4 | 5.6 | 3.3 | 0 | 7.4 | 0.6 |
| Precipitation (mm) | 0 | 0 | 0 | 0 | 0 | 0 | 0.2 | 0 | 0 | 1 | 0.6 | 0 | 0.4 | 2.7 | 0.4 | 0 | 0.4 | 0.4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1.3 | 0 | 0 |
| Precipitation hours | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 10 | 6 | 0 | 4 | 23 | 4 | 0 | 4 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 12 | 0 | 0 |
| Wind speed (m/s) | 14.2 | 12.8 | 14.6 | 28.7 | 28.6 | 15.8 | 33.2 | 12.6 | 11.9 | 15.5 | 11.6 | 20.4 | 26.1 | 28.2 | 12.3 | 13.4 | 13.4 | 22.7 | 14 | 15.9 | 12.7 | 11.2 | 16 | 15.1 | 18.6 | 12.4 | 11.6 | 11.1 | 19.6 | 18.4 | 20.5 |
In December 2023, the highest daytime temperature in Bayan was -0.4°C.
While the minimum temperature at night dropped to -30.5°C.
The average nighttime and daytime temperatures during December in Bayan are -21.9°C and -13.1°C respectively.
The precipitation sum in December is about 7 mm.