Ontario (Toronto)
December
Weather in Ontario for December 2025
Your guide to Ontario weather in December - trends and predictions
The climate of Ontario in December is quite snowy, averaging 11 snowy days.
In general, the average temperature in Ontario at the beginning of December is 3.9 °C. As the month progressed, temperatures tended to moderately fall, reaching an average of 3 °C by the end of December.
New! Chat with our AI weatherman - it’s amazing and free.
Snow Forecast ❄️
Temperatures
More
8
Dry days
12
Rainy days
11
Snow days
3°/0°
Temperatures
21 km/h
Avg max wind
78 %
Avg humidity
Ontario in December average weather
Move between months or click on a day
| Sun. | Mon. | Tue. | Wed. | Thu. | Fri. | Sat. |
|---|---|---|---|---|---|---|
| 1  4° | 2  5° | 3 4° | 4 3° | 5 4° | 6 4° | |
| 7 3° | 8  4° | 9 5° | 10 6° | 11 6° | 12 4° | 13  3° |
| 14 3° | 15 4° | 16 5° | 17 4° | 18  2° | 19 0° | 20 2° |
| 21 1° | 22  1° | 23 3° | 24 2° | 25  1° | 26 1° | 27 2° |
| 28  4° | 29 4° | 30 5° | 31 4° |
You can click on date
Access Ontario weather forecasts with a simple click. Select any date for comprehensive insights on temperature, rainfall, and wind conditions.
Temperatures trend during December in Ontario
See the weather trend as well as the moving average line
December weather day by day
Click on a date for more information
| Date | Weather | Temperatures | Rain | Snow | More |
|---|---|---|---|---|---|
| 1 Dec. | Overcast | 4° /0° | 2.5 mm | 0 cm | |
| 2 Dec. | Moderate rain at times | 5° /0° | 2.2 mm | 0 cm | |
| 3 Dec. | Overcast | 4° /0° | 6 mm | 0.6 cm | |
| 4 Dec. | Overcast | 3° /-1° | 0 mm | 0 cm | |
| 5 Dec. | Overcast | 4° /-1° | 3.3 mm | 0 cm | |
| 6 Dec. | Moderate rain at times | 4° /-1° | 3.1 mm | 0 cm | |
| 7 Dec. | Overcast | 3° /0° | 0.6 mm | 0.5 cm | |
| 8 Dec. | Light freezing rain | 4° /0° | 0.2 mm | 0 cm | |
| 9 Dec. | Overcast | 5° /1° | 10.2 mm | 0.1 cm | |
| 10 Dec. | Overcast | 6° /0° | 3 mm | 0.5 cm | |
| 11 Dec. | Overcast | 6° /1° | 5.7 mm | 0.3 cm | |
| 12 Dec. | Moderate or heavy rain shower | 4° /-1° | 2.2 mm | 0 cm | |
| 13 Dec. | Sunny | 3° /-1° | 0 mm | 0 cm | |
| 14 Dec. | Overcast | 3° /-2° | 0 mm | 0 cm | |
| 15 Dec. | Moderate or heavy rain shower | 4° /0° | 5.4 mm | 0 cm | |
| 16 Dec. | Overcast | 5° /1° | 7.5 mm | 0 cm | |
| 17 Dec. | Overcast | 4° /0° | 0.8 mm | 0 cm | |
| 18 Dec. | Partly cloudy | 2° /-2° | 6.1 mm | 3.8 cm | |
| 19 Dec. | Light freezing rain | 0° /-3° | 0.6 mm | 0 cm | |
| 20 Dec. | Overcast | 2° /-2° | 2 mm | 1.3 cm | |
| 21 Dec. | Overcast | 1° /-3° | 0 mm | 0 cm | |
| 22 Dec. | Cloudy | 1° /-4° | 0.9 mm | 0 cm | |
| 23 Dec. | Overcast | 3° /-4° | 5 mm | 1 cm | |
| 24 Dec. | Overcast | 2° /-2° | 5.3 mm | 1.7 cm | |
| 25 Dec. | Moderate snow | 1° /-2° | 3.8 mm | 1.6 cm | |
| 26 Dec. | Overcast | 1° /-3° | 0.5 mm | 0 cm | |
| 27 Dec. | Overcast | 2° /-2° | 3.9 mm | 0 cm | |
| 28 Dec. | Patchy rain possible | 4° /0° | 1.5 mm | 0.2 cm | |
| 29 Dec. | Overcast | 4° /0° | 11.1 mm | 0 cm | |
| 30 Dec. | Overcast | 5° /0° | 1.9 mm | 0.1 cm | |
| 31 Dec. | Overcast | 4° /0° | 5.5 mm | 0.1 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.
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?
Moderate rainfall is anticipated in Ontario during December, with a total of 83.2 mm spread over approximately 12 days. Considering plans for rainy days is advisable.
Will it snow in Ontario in December 2025?
Ontario experiences an average snowfall of 6.825 cm during December, occurring over 11 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 ❄️
December rainfall patterns in Ontario
Explore the daily rainfall trends and prepare for Ontarios December weather 💧
Provinces in Ontario
Select a province for an accurate weather forecast
Top locations in Ontario
Select a location for an accurate weather forecast
More Locations Quick links
You are here
Where is Ontario?Get accurate weather forecasts for Ontario, located at latitude 43.706 and longitude -79.399. Stay updated with localized weather information tailored for Ontario.
Found a mistake?
We appreciate your attention to details. Tell us here.