New Brunswick (Moncton)
December
Weather in New Brunswick for December 2025
Your guide to New Brunswick weather in December - trends and predictions
The climate of New Brunswick in December is quite snowy, averaging 13 snowy days.
In general, the average temperature in New Brunswick at the beginning of December is 1.4 °C. As the month progressed, temperatures tended to moderately rise, reaching an average of 2.6 °C by the end of December.
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Snow Forecast ❄️
Temperatures
More
13
Dry days
5
Rainy days
13
Snow days
2°/-3°
Temperatures
20 km/h
Avg max wind
76 %
Avg humidity
New Brunswick Weather December
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| Sun. | Mon. | Tue. | Wed. | Thu. | Fri. | Sat. |
|---|---|---|---|---|---|---|
| 1  5° | 2  3° | 3  1° | 4  0° | 5  3° | 6  1° | |
| 7 -3° | 8  1° | 9 1° | 10 5° | 11 13° | 12  7° | 13  1° |
| 14 -3° | 15 2° | 16 2° | 17 6° | 18  9° | 19 8° | 20 1° |
| 21  -0° | 22 -5° | 23 -2° | 24 1° | 25 2° | 26 3° | 27  2° |
| 28 1° | 29 2° | 30 4° | 31 4° |
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Temperatures trend during December in New Brunswick
See the weather trend as well as the moving average line
December weather day by day
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| Date | Weather | Temperatures | Rain | Snow | More |
|---|---|---|---|---|---|
| 1 Dec. | Overcast | 5° /0° | 0 mm | 0 cm | |
| 2 Dec. | Light rain | 3° /0° | 4.9 mm | 1.2 cm | |
| 3 Dec. | Moderate snow | 1° /-1° | 0.3 mm | 0.2 cm | |
| 4 Dec. | Heavy snow | 0° /-3° | 4.4 mm | 3.7 cm | |
| 5 Dec. | Light freezing rain | 3° /-5° | 31 mm | 0 cm | |
| 6 Dec. | Partly cloudy | 1° /-8° | 0 mm | 0 cm | |
| 7 Dec. | Overcast | -3° /-7° | 0.1 mm | 0 cm | |
| 8 Dec. | Sunny | 1° /-8° | 13.5 mm | 9.8 cm | |
| 9 Dec. | Sunny | 1° /-6° | 0 mm | 0 cm | |
| 10 Dec. | Overcast | 5° /-3° | 4.3 mm | 3.1 cm | |
| 11 Dec. | Light rain | 13° /2° | 11.4 mm | 0 cm | |
| 12 Dec. | Cloudy | 7° /0° | 5.7 mm | 0 cm | |
| 13 Dec. | Light snow showers | 1° /-5° | 0.1 mm | 0 cm | |
| 14 Dec. | Cloudy | -3° /-7° | 0 mm | 0 cm | |
| 15 Dec. | Partly cloudy | 2° /-6° | 0 mm | 0 cm | |
| 16 Dec. | Cloudy | 2° /-4° | 0 mm | 0 cm | |
| 17 Dec. | Overcast | 6° /-2° | 0 mm | 0 cm | |
| 18 Dec. | Light rain shower | 9° /3° | 12.8 mm | 0 cm | |
| 19 Dec. | Patchy rain possible | 8° /2° | 13.8 mm | 2.2 cm | |
| 20 Dec. | Light freezing rain | 1° /-3° | 0.2 mm | 0 cm | |
| 21 Dec. | Light snow | 0° /-5° | 28.6 mm | 7.8 cm | |
| 22 Dec. | Light snow | -5° /-9° | 0.1 mm | 0.1 cm | |
| 23 Dec. | Overcast | -2° /-8° | 0 mm | 0 cm | |
| 24 Dec. | Partly cloudy | 1° /-5° | 7 mm | 4.6 cm | |
| 25 Dec. | Sunny | 2° /-1° | 2.8 mm | 2 cm | |
| 26 Dec. | Cloudy | 3° /-1° | 0 mm | 0 cm | |
| 27 Dec. | Heavy freezing drizzle | 2° /-3° | 1.9 mm | 0 cm | |
| 28 Dec. | Heavy snow | 1° /-5° | 3.3 mm | 0.8 cm | |
| 29 Dec. | Heavy snow | 2° /-2° | 2.2 mm | 1.9 cm | |
| 30 Dec. | Heavy snow | 4° /1° | 2.8 mm | 2.4 cm | |
| 31 Dec. | Light freezing rain | 4° /-2° | 2.1 mm | 0.2 cm | |
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Important Notice
Our weather forecast for New Brunswick in December is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the New Brunswick forecast closer to your planned date for the most up-to-date weather information.
New Brunswick in December - FAQ
What are the expected maximum and minimum temperatures in New Brunswick during December?
Brace for cold days with temperatures not exceeding 2° and nights that are likely to be freezing. Winter clothing is essential for comfort and safety.
How much rainfall should be expected in New Brunswick during December?
Significant rainfall exceeding 153.3 mm is expected in New Brunswick during December, occurring over more than 5 days. Preparing for wet conditions is recommended in your planning.
Will it snow in New Brunswick in December 2025?
New Brunswick experiences an average snowfall of 40.16 cm during December, occurring over 13 days.
What are the typical wind conditions in New Brunswick during December?
The average wind speed in New Brunswick during December is 20 km/h, suggesting breezy to windy conditions, depending on your activities.
New Brunswick snow forecast December 2025
Track daily snowfall levels and discover New Brunswick’s snowy potential this December ❄️
December rainfall patterns in New Brunswick
Explore the daily rainfall trends and prepare for New Brunswicks December weather 💧
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