Last updated: June 18, 2025
In Grand Forks, Canada, the average temperature in December hovers around -4°C (26°F), with extremes ranging from a chilly -28°C (-18°F) to a milder 12°C (53°F). Be prepared for approximately 72 mm (2.8 in) of precipitation over 14 days, contributing to an average humidity level of 93%. Bundle up and enjoy the wintry atmosphere!
In December in Grand Forks, the average temperature is -4°C (26°F), with maximums reaching up to 12°C (53°F) and minimums plummeting as low as -28°C (-18°F). It's essential to pack warm clothing if you plan to travel during this month, as temperatures can vary significantly.
In Grand Forks in December, the total precipitation amount is 72 mm (2.8 in) spread over the course of 14 days.
In Grand Forks in December, humidity is 93%. With an average temperature of -4°C (26°F), this humidity feels like a heavy chill that seeps into your bones, making traveling uncomfortable and requiring extra layers to stay warm and dry.
In Grand Forks in December, the maximum UV index is 1, which corresponds to a low Exposure Category. This means you have a time to burn of 45 minutes. For more details, you can check the Hourly UV Index in Grand Forks.
UV Risk Categories
Weather in Grand Forks varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Grand Forks, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -5°C (24°F) | 74 mm (2.9 inches) | 90% | low |
| February Weather | -5°C (24°F) | 59 mm (2.3 inches) | 91% | moderate |
| March Weather | 1°C (34°F) | 68 mm (2.7 inches) | 89% | moderate |
| April Weather | 5°C (42°F) | 69 mm (2.7 inches) | 85% | high |
| May Weather | 12°C (53°F) | 66 mm (2.6 inches) | 82% | very high |
| June Weather | 16°C (61°F) | 45 mm (1.8 inches) | 81% | very high |
| July Weather | 20°C (69°F) | 13 mm (0.5 inches) | 84% | very high |
| August Weather | 20°C (68°F) | 18 mm (0.7 inches) | 75% | very high |
| September Weather | 13°C (57°F) | 45 mm (1.8 inches) | 74% | high |
| October Weather | 5°C (42°F) | 59 mm (2.3 inches) | 85% | moderate |
| November Weather | 0°C (33°F) | 71 mm (2.8 inches) | 88% | low |
| December Weather | -4°C (26°F) | 72 mm (2.8 inches) | 93% | low |