Last updated: June 24, 2025
In December, the average temperature in Ottertail, United States hovers around -8°C (18°F). During this chilly month, temperatures can plummet to a frigid -31°C (-23°F) and occasionally reach a maximum of 8°C (46°F). Expect about 46 mm (1.8 in) of precipitation over approximately 8 days, coupled with a high average humidity of 86%.
In December in Ottertail, the average temperature is -8°C (18°F). Maximums can reach 8°C (46°F), while minimums can drop as low as -31°C (-23°F). Travelers should be prepared for extremely cold conditions and dress warmly when visiting during this time.
In Ottertail in December, the precipitation amount is 46 mm (1.8 in) over the course of 8 days.
In Ottertail in December, humidity is 86%. With an average temperature of -8°C (18°F), this humidity feels like a biting chill that seeps into your bones, making travel uncomfortable and frigid, as the damp air accentuates the cold, creating a sharp contrast that can be quite challenging for outdoor activities.
In Ottertail 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 Ottertail, you can visit Hourly UV Index in Ottertail.
UV Risk Categories
Weather in Ottertail varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Ottertail, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -12°C (11°F) | 19 mm (0.8 inches) | 90% | low |
| February Weather | -12°C (10°F) | 23 mm (0.9 inches) | 92% | moderate |
| March Weather | -2°C (28°F) | 33 mm (1.3 inches) | 85% | moderate |
| April Weather | 4°C (39°F) | 59 mm (2.3 inches) | 81% | high |
| May Weather | 13°C (56°F) | 62 mm (2.4 inches) | 75% | very high |
| June Weather | 20°C (69°F) | 74 mm (2.9 inches) | 79% | very high |
| July Weather | 22°C (72°F) | 94 mm (3.7 inches) | 76% | very high |
| August Weather | 20°C (68°F) | 121 mm (4.8 inches) | 78% | very high |
| September Weather | 16°C (60°F) | 89 mm (3.5 inches) | 77% | high |
| October Weather | 7°C (44°F) | 94 mm (3.7 inches) | 79% | moderate |
| November Weather | -2°C (29°F) | 25 mm (1.0 inches) | 86% | moderate |
| December Weather | -8°C (18°F) | 46 mm (1.8 inches) | 86% | low |