Average temperature in December is -12.6 °C
Average daytime temperature is -8 °C
Average night temperature is -17.6 °C
Absolute maximum temperature: 7.4 °C
Absolute minimum temperature: -27.9 °C
Number of sunny days: 22
Number of rainy days: 1
Number of snow days: 8
Precipitation sum: 5 mm
* Weather data for Bayan Uula Sumu 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 | -3.3 | 2.2 | -0.2 | 1.2 | -0.9 | 0 | 7.4 | -3.6 | -9.7 | -12.3 | -10.9 | -12.8 | -12.4 | -15.1 | -17.5 | -15.4 | -12.7 | -15.4 | -18.4 | -17.8 | -18.2 | -11.6 | -9.3 | -6.4 | -4.3 | -6 | -4.2 | -2.2 | -2.4 | -4.2 | -3.5 |
| Apparent max temperature | -9.2 | -5 | -6.6 | -5.3 | -8.7 | -6 | 1.1 | -9.2 | -16 | -20.4 | -16.6 | -20.9 | -20.9 | -20.8 | -24.6 | -21.9 | -20.2 | -20.3 | -24.7 | -23.8 | -24.1 | -17.1 | -15.8 | -12.5 | -9.7 | -11.5 | -10.4 | -8.7 | -10.3 | -9.2 | -9.2 |
| Mean temperature | -8.6 | -5.8 | -6.2 | -2.9 | -6.1 | -4.4 | -0.5 | -10 | -13.5 | -15 | -15.5 | -14.5 | -15.1 | -18.5 | -21.1 | -19.5 | -18.2 | -19.2 | -22.8 | -23.3 | -21.1 | -15.9 | -13.6 | -11.9 | -11 | -11.6 | -11 | -7.8 | -7.3 | -8.5 | -9.5 |
| Apparent mean temperature | -21.8 | -18.6 | -17.1 | -17 | -17.4 | -17.9 | -14 | -24.2 | -25 | -26.5 | -27 | -26.3 | -24.3 | -29.5 | -30.3 | -29.4 | -29.6 | -30 | -31.7 | -32.2 | -34.2 | -26.7 | -24.7 | -22 | -20.5 | -22.4 | -21.4 | -21.1 | -18.1 | -20.2 | -19.7 |
| Minimum temperature | -14.7 | -12.9 | -11.2 | -10.7 | -10.9 | -11.2 | -8.6 | -16.4 | -17.5 | -20 | -20.5 | -17.7 | -17.2 | -22.1 | -23.4 | -22.7 | -23.2 | -23.2 | -26.2 | -27 | -27.9 | -21 | -17.7 | -15.6 | -15.6 | -17.5 | -16.6 | -16.5 | -12.3 | -14.5 | -13.6 |
| Apparent min temperature | -14.6 | -12.3 | -12 | -9.7 | -12.8 | -10.6 | -7.1 | -15.9 | -20.3 | -22.4 | -22.2 | -22.9 | -23 | -24.7 | -27.8 | -25.8 | -24.7 | -25.1 | -28.7 | -28.8 | -26.9 | -22 | -20.2 | -18.5 | -16.5 | -17.3 | -16.3 | -14.4 | -14.3 | -14.4 | -15.3 |
| 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) | 9 | 9 | 9 | 8.9 | 8.9 | 8.9 | 8.9 | 8.9 | 8.9 | 8.8 | 8.8 | 8.8 | 8.8 | 8.8 | 8.8 | 8.8 | 8.8 | 8.8 | 8.7 | 8.7 | 8.7 | 8.7 | 8.7 | 8.7 | 8.8 | 8.8 | 8.8 | 8.8 | 8.8 | 8.8 | 8.8 |
| Sunshine duration (h) | 7.9 | 7.9 | 7.8 | 7.8 | 7.8 | 7.8 | 7.7 | 7.7 | 7.7 | 0.2 | 5.4 | 7 | 4.1 | 0.1 | 7.6 | 7.6 | 7.6 | 5.4 | 7.6 | 7.6 | 7.6 | 7.6 | 7.6 | 7.6 | 7.4 | 7.5 | 7.5 | 7.4 | 2.2 | 7.5 | 7.6 |
| Precipitation (mm) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1.5 | 1.6 | 0.1 | 0.2 | 0.7 | 0.3 | 0 | 0 | 0.1 | 0.3 | 0 | 0 | 0.6 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Precipitation hours | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 5 | 12 | 1 | 2 | 7 | 3 | 0 | 0 | 1 | 3 | 0 | 0 | 6 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Wind speed (m/s) | 20.8 | 25.2 | 18.4 | 36.4 | 34.2 | 20.5 | 41.6 | 26.3 | 26.6 | 31.4 | 30.6 | 37.8 | 33.1 | 22.5 | 26.4 | 21.5 | 23.8 | 23.2 | 18.8 | 13.3 | 23.8 | 20.6 | 23 | 25.5 | 18.1 | 19.2 | 17.9 | 35.6 | 34.2 | 29 | 18.1 |
In December 2023, the highest daytime temperature in Bayan Uula Sumu was 7.4°C.
While the minimum temperature at night dropped to -27.9°C.
The average nighttime and daytime temperatures during December in Bayan Uula Sumu are -17.6°C and -8°C respectively.
The precipitation sum in December is about 5 mm.