Last updated: June 24, 2025
In December, the average temperature in Park City, United States is a brisk 4°C (39°F), with temperatures ranging from a chilly -14°C (7°F) to a mild 24°C (75°F). During this time, expect about 32 mm (1.2 in) of precipitation over 3 days, contributing to an average humidity level of 85%. Prepare accordingly for a mix of cool weather and wet conditions!
In December in Park City, the average temperature is 4°C (39°F). Maximum temperatures can reach 24°C (75°F), while minimums can drop to as low as -14°C (7°F). This wide range of temperatures means that travelers should be prepared for both warm and cold weather conditions.
In Park City in December, the precipitation amount is 32 mm (1.2 in) over the course of 3 days.
In Park City in December, humidity is 85%. With an average temperature of 4°C (39°F), this humidity feels like a damp chill that seeps into your bones, making traveling uncomfortable and requiring extra layers to ward off the cold and moisture.
In Park City in December, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Park City, you can check the information here.
UV Risk Categories
Weather in Park City varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Park City, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 1°C (34°F) | 38 mm (1.5 inches) | 77% | moderate |
| February Weather | 1°C (35°F) | 33 mm (1.3 inches) | 76% | high |
| March Weather | 9°C (49°F) | 85 mm (3.4 inches) | 71% | high |
| April Weather | 13°C (56°F) | 82 mm (3.2 inches) | 73% | very high |
| May Weather | 19°C (66°F) | 176 mm (6.9 inches) | 83% | very high |
| June Weather | 25°C (78°F) | 105 mm (4.1 inches) | 83% | extreme |
| July Weather | 27°C (81°F) | 76 mm (3.0 inches) | 81% | extreme |
| August Weather | 25°C (78°F) | 100 mm (4.0 inches) | 73% | very high |
| September Weather | 23°C (73°F) | 83 mm (3.3 inches) | 67% | very high |
| October Weather | 14°C (58°F) | 114 mm (4.5 inches) | 72% | high |
| November Weather | 8°C (46°F) | 26 mm (1.0 inches) | 82% | moderate |
| December Weather | 4°C (39°F) | 32 mm (1.2 inches) | 85% | moderate |