Last updated: August 23, 2025
In Ulan Us, China, the average temperature in December hovers around -11°C (12°F), with extremes ranging from a chilly -28°C (-19°F) to a milder 3°C (38°F). During this time, the area typically receives 9 mm (0.4 in) of precipitation over the course of 1 day. Despite the cold, the average humidity remains fairly high at 69%, adding to the character of this wintry month.
In December in Ulan Us, the average temperature is -11°C (12°F), with maximums reaching 3°C (38°F) and minimums dropping as low as -28°C (-19°F). It's essential to prepare for extreme cold conditions if you plan to travel during this time.
In Ulan Us in December, the precipitation amount is 9 mm (0.4 in) over the course of 1 day.
In Ulan Us in December humidity is 69%. With an average temperature of -11°C (12°F), this humidity feels like an icy dampness that seeps into your bones, making outdoor activities challenging and encouraging travelers to bundle up tightly against the cold while seeking warmth indoors.
In Ulan Us in December, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Ulan Us, you can visit Hourly UV Index in Ulan Us.
UV Risk Categories
Weather in Ulan Us varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Ulan Us, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -15°C (5°F) | 7 mm (0.3 inches) | 71% | low |
| February Weather | -10°C (15°F) | 8 mm (0.3 inches) | 66% | moderate |
| March Weather | 3°C (38°F) | 20 mm (0.8 inches) | 54% | moderate |
| April Weather | 14°C (57°F) | 46 mm (1.8 inches) | 49% | high |
| May Weather | 20°C (68°F) | 47 mm (1.8 inches) | 41% | very high |
| June Weather | 24°C (75°F) | 27 mm (1.1 inches) | 34% | very high |
| July Weather | 27°C (82°F) | 14 mm (0.6 inches) | 37% | very high |
| August Weather | 25°C (77°F) | 28 mm (1.1 inches) | 40% | very high |
| September Weather | 19°C (67°F) | 30 mm (1.2 inches) | 47% | high |
| October Weather | 10°C (50°F) | 29 mm (1.1 inches) | 60% | moderate |
| November Weather | -1°C (31°F) | 23 mm (0.9 inches) | 65% | moderate |
| December Weather | -11°C (12°F) | 9 mm (0.4 inches) | 69% | low |