Ontario (Toronto)
December
Weather in Ontario for December 2025
Your guide to Ontario weather in December - trends and predictions
Snow Squall Warning - See hour by hour.
The climate of Ontario in December is quite snowy, averaging 12 snowy days.
According to Ontario snow forecast for December 2025, 2 snowy days are expected until the end of the month. The closest date with snow is Monday, 22 December.Until now, December 2025 in Ontario is cooler than usual, with temperatures averaging 0.2 °C, this is -3.2 °C below the typical seasonal average.
The forecast for the next days in Ontario predicts temperatures to be around 1 °C, close to the historical average.
In general, the average temperature in Ontario at the beginning of December is 3.4 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 0.3 °C by the end of December.
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Temperatures
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9
Dry days
10
Rainy days
12
Snow days
3°/-1°
Temperatures
21 km/h
Avg max wind
78 %
Avg humidity
Ontario Weather December
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What’s the Weather Like in Ontario This December?
Discover the average temperatures and weather trends across Ontario’s cities this December.
Temperatures trend during December in Ontario
See the weather trend as well as the moving average line
December weather in Ontario day by day
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| Date | Weather | Temperatures | Rain | Snow | More |
|---|---|---|---|---|---|
| 1 Dec. |  Overcast | 3° /-1° | 2 mm | 0 cm | |
| 2 Dec. |  Moderate rain at times | 5° /0° | 2.7 mm | 0.4 cm | |
| 3 Dec. | Overcast | 4° /-1° | 4.8 mm | 0.5 cm | |
| 4 Dec. | Overcast | 3° /-2° | 0 mm | 0 cm | |
| 5 Dec. | Overcast | 3° /-2° | 2.7 mm | 0 cm | |
| 6 Dec. | Overcast | 4° /-1° | 2.5 mm | 0 cm | |
| 7 Dec. | Overcast | 2° /-1° | 3.5 mm | 2.6 cm | |
| 8 Dec. | Overcast | 2° /-2° | 0.2 mm | 0 cm | |
| 9 Dec. | Overcast | 4° /-1° | 9.6 mm | 0.3 cm | |
| 10 Dec. | Overcast | 5° /0° | 7.8 mm | 2.4 cm | |
| 11 Dec. | Overcast | 5° /0° | 4.7 mm | 0.2 cm | |
| 12 Dec. |  Cloudy | 3° /-2° | 1.9 mm | 0 cm | |
| 13 Dec. | Overcast | 2° /-2° | 0 mm | 0 cm | |
| 14 Dec. | Overcast | 2° /-3° | 0 mm | 0 cm | |
| 15 Dec. | Moderate or heavy rain shower | 3° /-2° | 5 mm | 0.2 cm | |
| 16 Dec. | Overcast | 5° /0° | 6.2 mm | 0 cm | |
| 17 Dec. | Overcast | 4° /0° | 0.7 mm | 0 cm | |
| 18 Dec. | Moderate or heavy rain shower | 3° /-2° | 8.2 mm | 3.1 cm | |
| 19 Dec. | Overcast | 1° /-3° | 4.4 mm | 0 cm | |
| 20 Dec. | Overcast | 2° /-2° | 2 mm | 1.3 cm | |
| 21 Dec. |  Partly cloudy | -1° /-6° | 0 mm | 0 cm | |
| 22 Dec. |  Moderate or heavy snow showers | 0° /-5° | 1.8 mm | 1.3 cm | |
| 23 Dec. |  Moderate rain | 3° /0° | 5.7 mm | 0.4 cm | |
| 24 Dec. |  Light freezing rain | 1° /-1° | 0.2 mm | 0 cm | |
| 25 Dec. |  Patchy rain possible | 2° /1° | 1.7 mm | 0 cm | |
| 26 Dec. |  Fog | 3° /-7° | 0.2 mm | 0 cm | |
| 27 Dec. |  Sunny | -8° /-11° | 0 mm | 0 cm | |
| 28 Dec. | Sunny | -2° /-8° | 0 mm | 0 cm | |
| 29 Dec. | Moderate or heavy snow showers | 2° /-2° | 3 mm | 0 cm | |
| 30 Dec. | Patchy rain possible | 3° /0° | 0.2 mm | 0 cm | |
| 31 Dec. | Overcast | 2° /0° | 0 mm | 0 cm | |
| Next | |||||
Important Notice
Our weather forecast for Ontario 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 Ontario forecast closer to your planned date for the most up-to-date weather information.
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Ontario in December - FAQ
What are the expected maximum and minimum temperatures in Ontario during December?
Brace for cold days with temperatures not exceeding 3° and nights that are likely to be freezing. Winter clothing is essential for comfort and safety.
How much rainfall should be expected in Ontario during December?
Significant rainfall exceeding 101 mm is expected in Ontario during December, occurring over more than 10 days. Preparing for wet conditions is recommended in your planning.
Will it snow in Ontario in December 2025?
Ontario experiences an average snowfall of 11.713 cm during December, occurring over 12 days.
What are the typical wind conditions in Ontario during December?
The average wind speed in Ontario during December is 21 km/h, suggesting breezy to windy conditions, depending on your activities.
Ontario snow forecast December 2025
Track daily snowfall levels and discover Ontario’s snowy potential this December ❄️
On average, Ontario sees 12 snowy days during December, with approximately 11.7 cm of total snowfall.
December rainfall patterns in Ontario
Explore the daily rainfall trends and prepare for Ontarios December weather 💧
Typically, Ontario has 10 rainy days in December with a total of 101 mm of rainfall.
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