Last updated: June 24, 2025
In December, the average temperature in West Mountain, United States is a chilly -3°C (26°F), with minimums plunging to -20°C (-4°F) and maximums reaching a mild 14°C (58°F). Expect about 49 mm (1.9 in) of precipitation over 10 days, while humidity hovers around a brisk 87%.
In December in West Mountain, the average temperature is -3°C (26°F), with maximums reaching 14°C (58°F) and minimums plummeting as low as -20°C (-4°F). Travelers should be prepared for a wide range of temperatures, from chilly days to potentially severe cold nights.
In West Mountain in December, the total precipitation amount is 49 mm (1.9 in) over the course of 10 days.
In West Mountain in December, humidity is 87%. With an average temperature of -3°C (26°F), this humidity feels like walking through a thick fog, making travels uncomfortable and adding a chill that seeps into your bones.
In West Mountain 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 West Mountain, you can check the information here.
UV Risk Categories
Weather in West Mountain varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in West Mountain, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -4°C (25°F) | 53 mm (2.1 inches) | 87% | moderate |
| February Weather | -2°C (29°F) | 55 mm (2.2 inches) | 88% | high |
| March Weather | 3°C (37°F) | 60 mm (2.4 inches) | 77% | very high |
| April Weather | 8°C (46°F) | 47 mm (1.9 inches) | 69% | very high |
| May Weather | 14°C (57°F) | 41 mm (1.6 inches) | 54% | extreme |
| June Weather | 22°C (71°F) | 11 mm (0.4 inches) | 45% | extreme |
| July Weather | 26°C (79°F) | 10 mm (0.4 inches) | 37% | extreme |
| August Weather | 24°C (76°F) | 17 mm (0.7 inches) | 34% | extreme |
| September Weather | 19°C (66°F) | 23 mm (0.9 inches) | 47% | very high |
| October Weather | 9°C (49°F) | 37 mm (1.5 inches) | 67% | high |
| November Weather | 4°C (39°F) | 32 mm (1.3 inches) | 82% | moderate |
| December Weather | -3°C (26°F) | 49 mm (1.9 inches) | 87% | moderate |