Average temperature in December is -18.5 °C
Average daytime temperature is -13.4 °C
Average night temperature is -23.9 °C
Absolute maximum temperature: -0.6 °C
Absolute minimum temperature: -33.8 °C
Number of sunny days: 22
Number of rainy days: 1
Number of snow days: 8
Precipitation sum: 7 mm
* Weather data for Herlen 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 | -6.3 | -7.3 | -3 | -3.7 | -4.1 | -8.2 | -0.6 | -12.9 | -16.7 | -17.2 | -17.8 | -19.4 | -19.7 | -18.6 | -20.6 | -22.6 | -22.2 | -19.6 | -22.3 | -21.5 | -20.8 | -19 | -17.8 | -11.1 | -6.8 | -13.2 | -11.3 | -6.3 | -9.2 | -6.2 | -8.9 |
| Apparent max temperature | -11.1 | -12.6 | -7.5 | -9.5 | -9.3 | -13.8 | -6.3 | -18.2 | -21.9 | -22.4 | -22.2 | -24.5 | -26.1 | -24.4 | -25.9 | -28.7 | -27.8 | -25 | -27.2 | -27.2 | -26.8 | -25.1 | -23.8 | -16.9 | -11.1 | -18.2 | -16.9 | -12.3 | -14.2 | -10.2 | -16.2 |
| Mean temperature | -14.2 | -10.7 | -10.7 | -7.9 | -11.5 | -12.5 | -7.3 | -19.1 | -22.9 | -21.2 | -21.6 | -24.1 | -22 | -20.4 | -26.4 | -27.7 | -26.7 | -25.1 | -26.9 | -27.8 | -25 | -24.9 | -22.3 | -15.2 | -16.5 | -17.2 | -15 | -12.4 | -11.2 | -13.7 | -14.3 |
| Apparent mean temperature | -24.5 | -22.6 | -21.7 | -21.4 | -23.8 | -22.5 | -20.6 | -32 | -32.4 | -32.9 | -29.7 | -33 | -31.8 | -27.4 | -37.2 | -38.1 | -36.6 | -37.5 | -38.9 | -38.3 | -36.7 | -34 | -34.8 | -28.8 | -29.1 | -30.1 | -23.8 | -22.6 | -22 | -23.7 | -24.9 |
| Minimum temperature | -19 | -16.7 | -16 | -15.4 | -18.1 | -16.8 | -15.5 | -26.6 | -27 | -27.4 | -24.9 | -28 | -25.6 | -22.1 | -31.4 | -31.8 | -30.4 | -32.2 | -33.8 | -33.3 | -30.8 | -28.2 | -28.6 | -23 | -23.7 | -24.6 | -17.8 | -17 | -16.9 | -18.7 | -19.6 |
| Apparent min temperature | -19.7 | -16.6 | -15.9 | -14.1 | -16.8 | -17.9 | -12.8 | -24.6 | -28.4 | -26.4 | -26.3 | -29.5 | -28 | -25.7 | -31.8 | -33.8 | -32.3 | -30.6 | -32 | -33.3 | -31.2 | -30.8 | -28.1 | -21.4 | -21.7 | -23 | -20.7 | -18 | -16.2 | -18.4 | -20.3 |
| 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) | 8.8 | 8.7 | 8.7 | 8.7 | 8.7 | 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 | 8.5 | 8.5 | 8.5 | 8.5 | 8.5 |
| Sunshine duration (h) | 7.1 | 7.4 | 7.3 | 7.4 | 7.2 | 7.1 | 7.2 | 7.2 | 7.2 | 6.8 | 6 | 7.1 | 6.3 | 0.1 | 4.8 | 7.1 | 7.1 | 4.4 | 7.1 | 7.1 | 7.2 | 7.2 | 7.2 | 7.1 | 7.2 | 7.1 | 7.2 | 7.2 | 3.4 | 7.3 | 0.8 |
| Precipitation (mm) | 0 | 0 | 0 | 0 | 1 | 0 | 0.8 | 0 | 0 | 0.5 | 0.3 | 0 | 1 | 1.9 | 0 | 0 | 0 | 0.2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1.4 | 0.1 | 0 |
| Precipitation hours | 0 | 0 | 0 | 0 | 3 | 0 | 3 | 0 | 0 | 5 | 3 | 0 | 10 | 19 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 12 | 1 | 0 |
| Wind speed (m/s) | 15.5 | 21.4 | 17.1 | 28 | 16.8 | 13.6 | 24.5 | 15.6 | 14.3 | 10.5 | 7.4 | 12.9 | 17.1 | 16.8 | 15 | 20.9 | 14.8 | 15.1 | 14 | 12.3 | 16.9 | 15.7 | 16.2 | 19.8 | 15.8 | 18.1 | 15.4 | 19.1 | 15.8 | 12.6 | 31.8 |
In December 2023, the highest daytime temperature in Herlen was -0.6°C.
While the minimum temperature at night dropped to -33.8°C.
The average nighttime and daytime temperatures during December in Herlen are -23.9°C and -13.4°C respectively.
The precipitation sum in December is about 7 mm.