Last updated: June 24, 2025
In Sundance, United States, the average temperature in December hovers around -2°C (28°F). However, be prepared for a wide temperature range, where the minimum can plummet to -25°C (-12°F), while the maximum can reach a comfortable 20°C (68°F). During this month, expect an average precipitation of 29 mm (1.1 in) spread over 7 days, combined with a high average humidity of 79%.
In December in Sundance, the average temperature is -2°C (28°F). Maximums can reach 20°C (68°F) and minimums can be as low as -25°C (-12°F). Travelers should be prepared for a wide range of conditions, from chilly days to unexpectedly warm spells.
In Sundance in December, the precipitation amount is 29 mm (1.1 in) over a span of 7 days.
In Sundance in December, humidity is 79%. With an average temperature of -2°C (28°F), this humidity feels like a biting chill that penetrates through layers of clothing, making outdoor activities uncomfortable and urging travelers to seek warmth indoors.
In Sundance 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 Sundance, you can visit Hourly UV Index in Sundance.
UV Risk Categories
Weather in Sundance varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Sundance, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -4°C (25°F) | 21 mm (0.8 inches) | 77% | moderate |
| February Weather | -6°C (21°F) | 31 mm (1.2 inches) | 80% | moderate |
| March Weather | 2°C (35°F) | 36 mm (1.4 inches) | 70% | high |
| April Weather | 4°C (40°F) | 69 mm (2.7 inches) | 70% | very high |
| May Weather | 11°C (51°F) | 79 mm (3.1 inches) | 76% | very high |
| June Weather | 18°C (65°F) | 52 mm (2.1 inches) | 84% | extreme |
| July Weather | 22°C (72°F) | 79 mm (3.1 inches) | 85% | extreme |
| August Weather | 20°C (68°F) | 50 mm (2.0 inches) | 84% | very high |
| September Weather | 15°C (60°F) | 49 mm (1.9 inches) | 77% | very high |
| October Weather | 6°C (42°F) | 54 mm (2.1 inches) | 73% | moderate |
| November Weather | 2°C (35°F) | 21 mm (0.8 inches) | 74% | moderate |
| December Weather | -2°C (28°F) | 29 mm (1.1 inches) | 79% | low |