Average temperature in December is -18.2 °C
Average daytime temperature is -12.5 °C
Average night temperature is -23.5 °C
Absolute maximum temperature: -3.3 °C
Absolute minimum temperature: -30.8 °C
Number of sunny days: 25
Number of rainy days:
Number of snow days: 6
Precipitation sum: 3 mm
* Weather data for Onon 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 | -7.1 | -4.5 | -3.3 | -3.4 | -5.7 | -9.9 | -5.1 | -16.6 | -17.1 | -17.3 | -17.8 | -19.4 | -19.2 | -17.5 | -22.1 | -20.7 | -18.1 | -19.3 | -22.4 | -20.4 | -15.5 | -15.7 | -11.9 | -6.8 | -5.7 | -12.4 | -6.3 | -5.5 | -8.4 | -5.4 | -7.1 |
| Apparent max temperature | -12.4 | -8.3 | -8.3 | -8.6 | -12.1 | -14.6 | -10.5 | -23.3 | -22.7 | -22.1 | -22.4 | -23.8 | -23.9 | -21.6 | -28.1 | -27.1 | -23.2 | -24.8 | -28.9 | -26.7 | -20.2 | -20.2 | -16.8 | -11.4 | -11.3 | -16.6 | -10.7 | -9.4 | -11.9 | -10 | -12.5 |
| Mean temperature | -11.9 | -11.5 | -10.2 | -7.1 | -12.5 | -14.8 | -11.2 | -20.3 | -24 | -22 | -21.7 | -23 | -21.6 | -21.1 | -25.5 | -26.2 | -25.8 | -24.7 | -26.6 | -25.1 | -24.8 | -22.4 | -18.5 | -15.3 | -13.9 | -17.6 | -14.7 | -12.4 | -10.5 | -13.6 | -15.1 |
| Apparent mean temperature | -21.8 | -22.2 | -22.6 | -21.6 | -26.2 | -25.5 | -23.1 | -29.7 | -34.1 | -34.6 | -28 | -29.7 | -30.3 | -31.2 | -32.8 | -36.1 | -36.5 | -32.9 | -34.9 | -34.2 | -34.8 | -34.5 | -28.1 | -28.1 | -29.5 | -30.5 | -27.7 | -22.7 | -19.4 | -25 | -25.7 |
| Minimum temperature | -16.3 | -16.8 | -17 | -16.3 | -20.5 | -20.1 | -18.1 | -24.3 | -28.5 | -28.9 | -23.7 | -25.4 | -25.8 | -25.5 | -27.4 | -30.3 | -30.8 | -27.4 | -29.4 | -28.4 | -29.1 | -29 | -22.6 | -22.5 | -24.1 | -24.9 | -22.4 | -17.5 | -15.4 | -20.8 | -20.1 |
| Apparent min temperature | -17.4 | -16.3 | -15.5 | -12.3 | -18.7 | -19.7 | -16.5 | -26.5 | -29.7 | -26.8 | -26.3 | -27.5 | -26.1 | -26.1 | -31.3 | -32.1 | -31.5 | -30.3 | -32.5 | -31 | -30.5 | -27.8 | -23.8 | -20.5 | -19.5 | -22.3 | -19.8 | -17.1 | -14.5 | -18.2 | -20.6 |
| 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 | 8.5 | 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 | 8.3 | 8.4 |
| Sunshine duration (h) | 7.3 | 7.1 | 7.2 | 7.1 | 7.1 | 7 | 5.5 | 7.1 | 7.1 | 7 | 5.4 | 7 | 6.8 | 5.7 | 6.9 | 7 | 7 | 6.4 | 6.9 | 6.9 | 6.9 | 6.9 | 6.9 | 6.9 | 6.9 | 6.9 | 6.9 | 6.9 | 0.6 | 6.9 | 2.1 |
| Precipitation (mm) | 0 | 0 | 0 | 0 | 0 | 0 | 0.3 | 0 | 0 | 0.2 | 0.2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.2 | 0 | 0 | 0 | 0 | 0 | 1.6 | 0 | 0.1 |
| Precipitation hours | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 9 | 0 | 1 |
| Wind speed (m/s) | 15.4 | 12.1 | 20.2 | 22.9 | 31.8 | 12.2 | 23.1 | 23.3 | 15.5 | 11.2 | 8 | 7.3 | 6.2 | 11.1 | 14.4 | 18.5 | 13 | 13.6 | 16.6 | 16.8 | 12.7 | 12.6 | 11.8 | 13 | 18.4 | 11.9 | 12.4 | 12.2 | 10.5 | 13.2 | 18.7 |
In December 2023, the highest daytime temperature in Onon was -3.3°C.
While the minimum temperature at night dropped to -30.8°C.
The average nighttime and daytime temperatures during December in Onon are -23.5°C and -12.5°C respectively.
The precipitation sum in December is about 3 mm.