Thetford-Mines Weather in December
What's the weather like in Thetford-Mines (Quebec) in December 2025?
The climate in Thetford-Mines during December can be summarized as cold and damp.
December is in the winter in Thetford-Mines and is typically the 3rd coldest month of the year. Daytime maximum temperatures average around a freezing -5°C (23°F), whilst at night -13°C (8°F) is normal.
| Daytime temperature | -4.8°C 23.4°F |
|---|---|
| Nightly temperature | -13.4°C 7.9°F |
| Average temperature | -9.1°C 15.6°F |
| Daily sunshine | 2 hrs |
| Avg rainfall | 102 mm 4 ins |
| Rainy days | 18 days |
| Sea temperature | 4.4°C 40°F |
| Humidity | 77% |
| Windspeed | 12.2kph 8 mph |
On average December is the 5th wettest month of the year in Thetford-Mines with around 102mm 4 inches of rain making it a damp time to visit. This rainfall is typically spread over 18 days, although this may vary considerably.
On the flip side this corresponds to an average of 2 hours of sunshine per day.
December temperatures in Thetford-Mines
December rainfall
December hourly sunshine
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Thetford-Mines in December 2025.
Other monthly averages
Best places to visit in December
Thetford-Mines weather stats
| Hottest month: | July | 23°C 73.4°F |
|---|---|---|
| Driest month: | February | 68mm 2.7ins |
| Sunniest month: | July | 8.1hrs |
| Coldest month: | January | -8.1°C 17.4°F |
| Wettest month: | August | 146mm 5.7ins |
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