Last updated: June 24, 2025
In December, the average temperature in Colstrip, United States hovers around -2°C (29°F). Expect a chilly range where minimum temperatures can plummet to -28°C (-18°F), while highs may reach up to 21°C (70°F). Additionally, anticipate around 25 mm (1.0 in) of precipitation spread over 7 days and an average humidity of 81%, creating a crisp atmosphere.
In December in Colstrip, the average temperature is -2°C (29°F), with maximums reaching 21°C (70°F) and minimums plummeting to -28°C (-18°F). Travelers should be prepared for significant temperature fluctuations, making it essential to pack suitable clothing for both cold and mild conditions.
In Colstrip in December, the precipitation amount is 25 mm (1.0 in) over the course of 7 days.
In Colstrip in December humidity is 81%. With an average temperature of -2°C (29°F), this humidity feels like an uncomfortable chill that seeps into your bones, making outdoor activities less enjoyable and requiring extra layers to stay warm while traveling.
In Colstrip 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 Colstrip, you can visit Hourly UV Index in Colstrip.
UV Risk Categories
Weather in Colstrip varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Colstrip, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -5°C (24°F) | 16 mm (0.6 inches) | 78% | low |
| February Weather | -7°C (19°F) | 36 mm (1.4 inches) | 79% | moderate |
| March Weather | 1°C (35°F) | 31 mm (1.2 inches) | 71% | moderate |
| April Weather | 6°C (44°F) | 57 mm (2.2 inches) | 70% | very high |
| May Weather | 13°C (56°F) | 59 mm (2.3 inches) | 75% | very high |
| June Weather | 20°C (69°F) | 53 mm (2.1 inches) | 82% | very high |
| July Weather | 24°C (76°F) | 32 mm (1.3 inches) | 84% | very high |
| August Weather | 23°C (73°F) | 26 mm (1.0 inches) | 85% | very high |
| September Weather | 17°C (63°F) | 54 mm (2.1 inches) | 79% | very high |
| October Weather | 8°C (46°F) | 41 mm (1.6 inches) | 75% | moderate |
| November Weather | 2°C (37°F) | 22 mm (0.9 inches) | 75% | moderate |
| December Weather | -2°C (29°F) | 25 mm (1.0 inches) | 81% | low |