Last updated: June 24, 2025
In December, the average temperature in Hill City, United States hovers around -8°C (18°F). Expect chilly extremes, with minimum temperatures plunging to -33°C (-28°F) and highs reaching a mild 7°C (46°F). You'll also experience 53 mm (2.1 in) of precipitation over approximately 9 days, and the average humidity is a brisk 89%. Suit up for a cold yet captivating winter experience!
In December in Hill City, the average temperature is -8°C (18°F), with maximums reaching 7°C (46°F) and minimums plummeting to -33°C (-28°F). Travelers should be prepared for extremely cold conditions and pack accordingly.
In Hill City in December, the total precipitation amount is 53 mm (2.1 in) spread over 9 days.
In Hill City in December humidity is 89%. With an average temperature of -8°C (18°F), this humidity feels like an uncomfortable chill that seeps into your bones, making traveling outdoors a daunting challenge as you contend with the biting cold and damp air.
In Hill City 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 Hill City, you can visit Hourly UV Index in Hill City.
UV Risk Categories
Weather in Hill City varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Hill City, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -12°C (11°F) | 21 mm (0.8 inches) | 92% | low |
| February Weather | -12°C (11°F) | 25 mm (1.0 inches) | 93% | moderate |
| March Weather | -2°C (28°F) | 37 mm (1.4 inches) | 88% | moderate |
| April Weather | 4°C (39°F) | 67 mm (2.6 inches) | 83% | high |
| May Weather | 13°C (55°F) | 66 mm (2.6 inches) | 76% | very high |
| June Weather | 19°C (66°F) | 86 mm (3.4 inches) | 76% | very high |
| July Weather | 21°C (70°F) | 109 mm (4.3 inches) | 76% | very high |
| August Weather | 19°C (67°F) | 94 mm (3.7 inches) | 77% | very high |
| September Weather | 15°C (59°F) | 106 mm (4.2 inches) | 77% | high |
| October Weather | 7°C (44°F) | 110 mm (4.3 inches) | 82% | moderate |
| November Weather | -2°C (28°F) | 32 mm (1.3 inches) | 87% | moderate |
| December Weather | -8°C (18°F) | 53 mm (2.1 inches) | 89% | low |