Average temperature in January is -17.5 °C
Average daytime temperature is -9.3 °C
Average night temperature is -23.8 °C
Absolute maximum temperature: 1.7 °C
Absolute minimum temperature: -32.8 °C
Number of sunny days: 25
Number of rainy days: 1
Number of snow days: 5
Precipitation sum: 3 mm
* Weather data for Bayan-Ulaan Mongolia is based on climate observations for 2023 year
| January (°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 | -10.2 | -9 | -9.7 | -6.7 | -5.7 | -3 | 1.2 | -4.1 | -2.5 | 0.2 | 1.7 | -10.7 | -18.8 | -14.9 | -10.2 | -12.9 | -9.3 | -11.5 | -16.6 | -11.4 | -13.8 | -24.4 | -23.1 | -10.6 | -14.4 | -15.9 | -6.1 | -1.1 | -2.8 | -2.5 | -8.9 |
| Apparent max temperature | -14.9 | -13 | -14.4 | -11.5 | -11.8 | -7.6 | -4.1 | -7.6 | -6.4 | -3.6 | -4.1 | -16.3 | -24.4 | -20.9 | -14.9 | -19.8 | -13.6 | -18.6 | -22.2 | -18.3 | -20.2 | -31 | -28 | -15.1 | -21 | -22.5 | -12 | -7.2 | -7.9 | -7.4 | -14.6 |
| Mean temperature | -17.8 | -16.1 | -15.7 | -15.5 | -15.2 | -11.3 | -9.4 | -11.3 | -10.7 | -9.6 | -9 | -19.4 | -25.1 | -23.4 | -18.5 | -20.1 | -18.3 | -18.5 | -22.9 | -20.6 | -21.5 | -28.4 | -28.5 | -19.3 | -20.7 | -22.6 | -16.3 | -13.1 | -13.7 | -13.7 | -15.2 |
| Apparent mean temperature | -27 | -30.2 | -26.3 | -27.1 | -26.4 | -25.3 | -21.1 | -22.4 | -20.7 | -21.6 | -23.1 | -29.3 | -34.9 | -36.2 | -31.9 | -32.1 | -32.9 | -30.8 | -32 | -33.4 | -33.4 | -36.6 | -38.4 | -35.8 | -31.1 | -33.1 | -30.2 | -27.3 | -26.4 | -25.9 | -26 |
| Minimum temperature | -22.3 | -24.6 | -21.9 | -21.9 | -20.7 | -19.5 | -15.9 | -17.3 | -15.6 | -16.7 | -18 | -24.7 | -29.8 | -30.7 | -26.4 | -26.7 | -27.1 | -24.1 | -26.7 | -27.5 | -26.8 | -31.3 | -32.8 | -30 | -25.7 | -27.7 | -23.5 | -21.1 | -21 | -20.5 | -20.2 |
| Apparent min temperature | -22.5 | -20.9 | -20.4 | -20.4 | -20.7 | -16.2 | -14.5 | -15.7 | -15.3 | -14.3 | -14.1 | -25.9 | -30.3 | -28.9 | -23.7 | -25.9 | -23.6 | -25 | -28.5 | -26.4 | -27.2 | -34.3 | -33.9 | -24.4 | -26.4 | -28.6 | -22 | -18.5 | -18.7 | -19 | -20.5 |
| January | 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) | 8.7 | 8.7 | 8.7 | 8.7 | 8.7 | 8.7 | 8.8 | 8.8 | 8.8 | 8.8 | 8.9 | 8.9 | 8.9 | 9 | 9 | 9 | 9.1 | 9.1 | 9.1 | 9.2 | 9.2 | 9.2 | 9.3 | 9.3 | 9.4 | 9.4 | 9.4 | 9.5 | 9.5 | 9.6 | 9.6 |
| Sunshine duration (h) | 7.4 | 7.5 | 7.5 | 7.5 | 7 | 7.5 | 7 | 7.6 | 7.6 | 5.2 | 7.6 | 2.6 | 7.7 | 7.8 | 7.8 | 7.8 | 7.8 | 5.2 | 8 | 8 | 8 | 6.7 | 8.1 | 8.2 | 5 | 8.3 | 8.3 | 8.4 | 8.4 | 8.5 | 8.5 |
| Precipitation (mm) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.1 | 0.7 | 0 | 0 | 0 | 0 | 0 | 0.8 | 0 | 0 | 0.1 | 0 | 0 | 0.2 | 0.6 | 0 | 0 | 0 | 0 | 0 | 0 |
| Precipitation hours | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 6 | 0 | 0 | 0 | 0 | 0 | 6 | 0 | 0 | 1 | 0 | 0 | 2 | 6 | 0 | 0 | 0 | 0 | 0 | 0 |
| Wind speed (m/s) | 9.2 | 11 | 14.7 | 10.3 | 23.5 | 13.8 | 20.5 | 11.2 | 10 | 12 | 15.8 | 30.2 | 13.8 | 13.7 | 12.7 | 21.8 | 14.5 | 28.5 | 19.6 | 23.2 | 17.6 | 19.8 | 14.7 | 13 | 18.9 | 20.5 | 18.5 | 21.1 | 11.6 | 15.9 | 19.7 |
In January 2023, the highest daytime temperature in Bayan-Ulaan was 1.7°C.
While the minimum temperature at night dropped to -32.8°C.
The average nighttime and daytime temperatures during January in Bayan-Ulaan are -23.8°C and -9.3°C respectively.
The precipitation sum in January is about 3 mm.