Last updated: June 24, 2025
In Mahnomen, United States, the average temperature for December hovers around -8°C (17°F). Be prepared for chilly conditions, with a minimum reaching an icy -35°C (-32°F) and a maximum of 7°C (46°F). Expect to encounter precipitation totaling 42 mm (1.7 in) over approximately 8 days, contributing to an average humidity of 86%. Dress warmly and embrace the wintry atmosphere!
In December in Mahnomen, the average temperature is -8°C (17°F), with maximums reaching 7°C (46°F) and minimums plummeting to as low as -35°C (-32°F). Be prepared for extremely cold weather if you plan to travel during this time.
In Mahnomen in December, the precipitation amount is 42 mm (1.7 in) over the course of 8 days.
In Mahnomen in December, humidity is 86%. With an average temperature of -8°C (17°F), this humidity feels like an icy blanket wrapping around you, making travel outside feel uncomfortably frigid and damp, as if you're stepping into a chilled, moist cloud that clings to your skin, often leading to a biting chill that seeps into your bones.
In Mahnomen 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 Mahnomen, you can visit Hourly UV Index in Mahnomen.
UV Risk Categories
Weather in Mahnomen varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Mahnomen, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -12°C (10°F) | 20 mm (0.8 inches) | 90% | low |
| February Weather | -13°C (9°F) | 23 mm (0.9 inches) | 92% | moderate |
| March Weather | -3°C (28°F) | 26 mm (1.0 inches) | 85% | moderate |
| April Weather | 4°C (39°F) | 54 mm (2.1 inches) | 81% | high |
| May Weather | 13°C (56°F) | 49 mm (1.9 inches) | 75% | very high |
| June Weather | 20°C (68°F) | 77 mm (3.0 inches) | 79% | very high |
| July Weather | 22°C (72°F) | 78 mm (3.1 inches) | 76% | very high |
| August Weather | 20°C (68°F) | 93 mm (3.7 inches) | 78% | very high |
| September Weather | 15°C (59°F) | 100 mm (3.9 inches) | 77% | high |
| October Weather | 6°C (43°F) | 83 mm (3.3 inches) | 79% | moderate |
| November Weather | -3°C (27°F) | 26 mm (1.0 inches) | 86% | moderate |
| December Weather | -8°C (17°F) | 42 mm (1.7 inches) | 86% | low |