Last updated: June 24, 2025
In Kalispell, United States, the average temperature in December hovers around -2°C (28°F), with a chilly minimum of -23°C (-10°F) and a mild maximum of 13°C (55°F). Expect 81 mm (3.2 in) of precipitation spread over 16 days, contributing to an impressive average humidity of 94%. Stay warm and prepared for the wet weather!
In December in Kalispell, the average temperature is -2°C (28°F). Maximum temperatures can reach 13°C (55°F), while minimums can drop as low as -23°C (-10°F). Be prepared for a wide temperature range when traveling to Kalispell during this month.
In Kalispell in December, the precipitation amount is 81 mm (3.2 in), falling over the course of 16 days.
In Kalispell in December humidity is 94%. With an average temperature of -2°C (28°F), this humidity feels like damp, biting cold that seeps into your bones, making travel uncomfortable and challenging as each breath carries a chill that clings to your skin.
In Kalispell 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 Kalispell, you can visit Hourly UV Index in Kalispell.
UV Risk Categories
Weather in Kalispell varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Kalispell, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -4°C (24°F) | 60 mm (2.4 inches) | 93% | low |
| February Weather | -7°C (20°F) | 87 mm (3.4 inches) | 91% | moderate |
| March Weather | 0°C (32°F) | 61 mm (2.4 inches) | 88% | high |
| April Weather | 4°C (39°F) | 87 mm (3.4 inches) | 84% | high |
| May Weather | 10°C (50°F) | 71 mm (2.8 inches) | 78% | very high |
| June Weather | 15°C (59°F) | 67 mm (2.7 inches) | 77% | very high |
| July Weather | 19°C (67°F) | 23 mm (0.9 inches) | 79% | very high |
| August Weather | 18°C (66°F) | 27 mm (1.0 inches) | 69% | very high |
| September Weather | 13°C (56°F) | 50 mm (2.0 inches) | 69% | high |
| October Weather | 5°C (42°F) | 76 mm (3.0 inches) | 78% | moderate |
| November Weather | 1°C (34°F) | 82 mm (3.2 inches) | 87% | moderate |
| December Weather | -2°C (28°F) | 81 mm (3.2 inches) | 94% | low |