Alliston
December
Weather in Alliston for December 2026
Your guide to Alliston weather in December - trends and predictions
The climate of Alliston in December is quite snowy, averaging 13 snowy days.
In general, the average temperature in Alliston at the beginning of December is -0.1 °C. As the month progressed, temperatures tended to moderately rise, reaching an average of 0.4 °C by the end of December.
Is December a good time to visit Alliston? check out the best time to travel to Alliston page.
✨ Is December a good time to visit Alliston? – Ask the AI Weatherman
Snow Forecast ❄️
Temperatures
More
14
Dry days
4
Rainy days
13
Snow days
0°/-4°
Temperatures
21 km/h
Avg max wind
87 %
Avg humidity
Alliston Weather December
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Temperatures trend during December in Alliston
See the weather trend as well as the moving average line
December weather in Alliston day by day
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| Date | Weather | Temperatures | Rain | Snow | More |
|---|---|---|---|---|---|
| 1 Dec. |  Light snow | 0° /-2° | 2.9 mm | 2.3 cm | |
| 2 Dec. |  Light sleet | 0° /-2° | 4.9 mm | 2.2 cm | |
| 3 Dec. | Light snow | 0° /-3° | 4.8 mm | 3.1 cm | |
| 4 Dec. | Light snow | -1° /-4° | 4.8 mm | 2.8 cm | |
| 5 Dec. | Light snow | -1° /-7° | 2 mm | 0.6 cm | |
| 6 Dec. | Patchy light snow | -1° /-5° | 6.2 mm | 4.4 cm | |
| 7 Dec. |  Moderate snow | 1° /-4° | 7.1 mm | 5.2 cm | |
| 8 Dec. | Light snow | -1° /-5° | 1.4 mm | 0.4 cm | |
| 9 Dec. |  Thundery outbreaks possible | 3° /-3° | 1.5 mm | 0.4 cm | |
| 10 Dec. | Moderate snow | 3° /-1° | 7.2 mm | 5 cm | |
| 11 Dec. | Light snow | -2° /-4° | 5.1 mm | 3.7 cm | |
| 12 Dec. |  Light snow showers | 0° /-5° | 9.3 mm | 6.7 cm | |
| 13 Dec. | Patchy light snow | -2° /-6° | 0.1 mm | 0 cm | |
| 14 Dec. | Light snow | -2° /-7° | 2.3 mm | 1.7 cm | |
| 15 Dec. | Light snow | 0° /-2° | 1.3 mm | 0.4 cm | |
| 16 Dec. |  Overcast | 1° /-3° | 0.6 mm | 0 cm | |
| 17 Dec. |  Patchy rain possible | 3° /0° | 1.8 mm | 0 cm | |
| 18 Dec. | Light snow showers | 3° /-2° | 14.6 mm | 4.6 cm | |
| 19 Dec. | Light snow | 0° /-5° | 3.7 mm | 0 cm | |
| 20 Dec. | Overcast | -1° /-4° | 0.7 mm | 0 cm | |
| 21 Dec. | Light snow | -2° /-6° | 5 mm | 1 cm | |
| 22 Dec. | Overcast | -2° /-8° | 0.4 mm | 0.3 cm | |
| 23 Dec. |  Light freezing rain | 0° /-3° | 7.9 mm | 4.4 cm | |
| 24 Dec. | Light snow | 0° /-3° | 5.8 mm | 4.2 cm | |
| 25 Dec. | Light snow | 0° /-4° | 1.4 mm | 0.4 cm | |
| 26 Dec. |  Moderate rain | -2° /-4° | 10.3 mm | 7.1 cm | |
| 27 Dec. | Moderate rain | 0° /-3° | 9.1 mm | 0 cm | |
| 28 Dec. | Moderate rain | 2° /-1° | 21.3 mm | 1.6 cm | |
| 29 Dec. |  Heavy rain | 3° /-1° | 30.1 mm | 2.4 cm | |
| 30 Dec. | Light snow | 0° /-3° | 13.5 mm | 0.9 cm | |
| 31 Dec. | Light snow | -1° /-4° | 2.7 mm | 2 cm | |
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Important Notice
Our weather forecast for Alliston 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 Alliston forecast closer to your planned date for the most up-to-date weather information.
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Alliston in December - FAQ
What are the expected maximum and minimum temperatures in Alliston during December?
Brace for cold days with temperatures not exceeding 0° and nights that are likely to be freezing. Winter clothing is essential for comfort and safety.
How much rainfall should be expected in Alliston during December?
Significant rainfall exceeding 189.9 mm is expected in Alliston during December, occurring over more than 4 days. Preparing for wet conditions is recommended in your planning.
Will it snow in Alliston in December 2026?
Alliston experiences an average snowfall of 68 cm during December, occurring over 13 days.
What are the typical wind conditions in Alliston during December?
The average wind speed in Alliston during December is 21 km/h, suggesting breezy to windy conditions, depending on your activities.
Alliston snow forecast December 2026
Track daily snowfall levels and discover Alliston’s snowy potential this December ❄️
On average, Alliston sees 13 snowy days during December, with approximately 68 cm of total snowfall.
December rainfall patterns in Alliston
Explore the daily rainfall trends and prepare for Allistons December weather 💧
Typically, Alliston has 4 rainy days in December with a total of 189.9 mm of rainfall.
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