Last updated: June 24, 2025
In Sisseton, United States, the average temperature in December hovers around -5°C (23°F). However, be prepared for a range that can dip as low as -27°C (-16°F) and soar to a maximum of 13°C (56°F). During this month, expect around 38 mm (1.5 in) of precipitation spread over approximately 6 days, contributing to an average humidity of 84%.
In December in Sisseton, the average temperature is -5°C (23°F), with maximums reaching 13°C (56°F) and minimums dropping as low as -27°C (-16°F). Travelers should be prepared for a wide range of temperatures and dress in layers to stay comfortable during their visit.
In Sisseton in December, the total precipitation amount is 38 mm (1.5 in) spread over 6 days.
In Sisseton in December, humidity is 84%. With an average temperature of -5°C (23°F), this humidity feels like an icy blanket wrapping around you, making the cold air bite even deeper and turning travel into a brisk, challenging adventure where each breath comes with a frosty reminder of the chill.
In Sisseton 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 Sisseton, you can visit Hourly UV Index in Sisseton.
UV Risk Categories
Weather in Sisseton varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Sisseton, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -10°C (14°F) | 20 mm (0.8 inches) | 85% | moderate |
| February Weather | -10°C (13°F) | 18 mm (0.7 inches) | 89% | moderate |
| March Weather | -1°C (30°F) | 37 mm (1.4 inches) | 81% | high |
| April Weather | 5°C (41°F) | 57 mm (2.3 inches) | 82% | high |
| May Weather | 14°C (57°F) | 77 mm (3.0 inches) | 76% | very high |
| June Weather | 21°C (70°F) | 81 mm (3.2 inches) | 81% | very high |
| July Weather | 23°C (74°F) | 88 mm (3.5 inches) | 82% | very high |
| August Weather | 21°C (70°F) | 129 mm (5.1 inches) | 83% | very high |
| September Weather | 17°C (62°F) | 81 mm (3.2 inches) | 82% | high |
| October Weather | 8°C (46°F) | 79 mm (3.1 inches) | 82% | moderate |
| November Weather | 0°C (32°F) | 22 mm (0.9 inches) | 87% | moderate |
| December Weather | -5°C (23°F) | 38 mm (1.5 inches) | 84% | low |