Regional Municipality of Niagara (St. Catharines)
December
Weather in Regional Municipality of Niagara for December 2025
Your guide to Regional Municipality of Niagara weather in December - trends and predictions
With an average of 5 snowy days, Regional Municipality of Niagara usually enjoys a light touch of snow in December.
In general, the average temperature in Regional Municipality of Niagara at the beginning of December is 3 °C. As the month progressed, temperatures tended to noticeably warm up, reaching an average of 5.3 °C by the end of December.
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Snow Forecast ❄️
Temperatures
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12
Dry days
14
Rainy days
5
Snow days
4°/0°
Temperatures
28 km/h
Avg max wind
81 %
Avg humidity
Regional Municipality of Niagara Weather December
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Temperatures trend during December in Regional Municipality of Niagara
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December weather in Regional Municipality of Niagara day by day
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| Date | Weather | Temperatures | Rain | Snow | More |
|---|---|---|---|---|---|
| 1 Dec. |  Moderate rain | 4° /0° | 5.2 mm | 0 cm | |
| 2 Dec. |  Light rain | 4° /1° | 2.3 mm | 0 cm | |
| 3 Dec. |  Moderate or heavy rain with thunder | 5° /1° | 9.3 mm | 0 cm | |
| 4 Dec. |  Overcast | 3° /0° | 0.7 mm | 0 cm | |
| 5 Dec. | Overcast | 2° /-1° | 1.8 mm | 0 cm | |
| 6 Dec. |  Light snow | 0° /-2° | 0 mm | 0 cm | |
| 7 Dec. |  Heavy snow | 3° /-1° | 3.4 mm | 2.5 cm | |
| 8 Dec. |  Fog | 6° /1° | 0 mm | 0 cm | |
| 9 Dec. |  Patchy rain possible | 9° /4° | 16.6 mm | 0 cm | |
| 10 Dec. | Moderate rain | 8° /2° | 13.7 mm | 0 cm | |
| 11 Dec. | Light snow | 3° /0° | 0.3 mm | 0.1 cm | |
| 12 Dec. | Patchy rain possible | 3° /-2° | 0 mm | 0 cm | |
| 13 Dec. | Patchy light snow | 1° /-4° | 0 mm | 0 cm | |
| 14 Dec. | Overcast | 2° /-3° | 0 mm | 0 cm | |
| 15 Dec. |  Sunny | 5° /-1° | 1.1 mm | 0 cm | |
| 16 Dec. | Overcast | 7° /2° | 12.1 mm | 0 cm | |
| 17 Dec. | Light drizzle | 8° /4° | 1.2 mm | 0 cm | |
| 18 Dec. | Light rain shower | 5° /0° | 9.3 mm | 5.3 cm | |
| 19 Dec. |  Blizzard | 0° /-1° | 2.7 mm | 0 cm | |
| 20 Dec. |  Partly cloudy | 2° /-1° | 0 mm | 0 cm | |
| 21 Dec. |  Light freezing rain | 0° /-3° | 0 mm | 0 cm | |
| 22 Dec. | Overcast | -2° /-5° | 0 mm | 0 cm | |
| 23 Dec. | Light drizzle | 3° /-3° | 2.8 mm | 0.9 cm | |
| 24 Dec. | Patchy rain possible | 3° /1° | 5.2 mm | 0 cm | |
| 25 Dec. | Patchy rain possible | 4° /2° | 0 mm | 0 cm | |
| 26 Dec. | Light rain | 4° /2° | 1.3 mm | 0 cm | |
| 27 Dec. | Moderate rain | 5° /2° | 7.7 mm | 0 cm | |
| 28 Dec. | Patchy rain possible | 6° /2° | 0.4 mm | 0 cm | |
| 29 Dec. | Light drizzle | 8° /4° | 16.6 mm | 0 cm | |
| 30 Dec. | Patchy rain possible | 6° /1° | 0.8 mm | 0 cm | |
| 31 Dec. | Light snow | 4° /1° | 5.8 mm | 0.6 cm | |
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Important Notice
Our weather forecast for Regional Municipality of Niagara 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 Regional Municipality of Niagara forecast closer to your planned date for the most up-to-date weather information.
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Regional Municipality of Niagara in December - FAQ
What are the expected maximum and minimum temperatures in Regional Municipality of Niagara during December?
Brace for cold days with temperatures not exceeding 4° and nights that are likely to be freezing. Winter clothing is essential for comfort and safety.
How much rainfall should be expected in Regional Municipality of Niagara during December?
Significant rainfall exceeding 120.4 mm is expected in Regional Municipality of Niagara during December, occurring over more than 14 days. Preparing for wet conditions is recommended in your planning.
Will it snow in Regional Municipality of Niagara in December 2025?
Regional Municipality of Niagara experiences an average snowfall of 9.5 cm during December, occurring over 5 days.
What are the typical wind conditions in Regional Municipality of Niagara during December?
The average wind speed in Regional Municipality of Niagara during December is 28 km/h, suggesting breezy to windy conditions, depending on your activities.
Regional Municipality of Niagara snow forecast December 2025
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December rainfall patterns in Regional Municipality of Niagara
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