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 2 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.
The climate of Regional Municipality of Niagara in December is notably wet, with an average of 14 rainy days, and a total of 92.1 mm of precipitation.
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Snow Forecast ❄️
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15
Dry days
14
Rainy days
2
Snow days
5°/2°
Temperatures
26 km/h
Avg max wind
79 %
Avg humidity
Regional Municipality of Niagara in December average weather
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| Sun. | Mon. | Tue. | Wed. | Thu. | Fri. | Sat. |
|---|---|---|---|---|---|---|
| 1  4° | 2  4° | 3  5° | 4  3° | 5 2° | 6  0° | |
| 7  3° | 8  6° | 9  9° | 10 8° | 11 3° | 12 3° | 13 1° |
| 14 2° | 15  5° | 16 7° | 17 8° | 18 5° | 19  0° | 20  2° |
| 21  0° | 22 -2° | 23 3° | 24 3° | 25 4° | 26 4° | 27 5° |
| 28 6° | 29 8° | 30 6° | 31 4° |
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Temperatures trend during December in Regional Municipality of Niagara
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. | 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.
Regional Municipality of Niagara in December - FAQ
What are the expected maximum and minimum temperatures in Regional Municipality of Niagara during December?
During December, expect a variety of temperatures with highs around 5° and lows near 2°, suitable for diverse activities and preferences.
How much rainfall should be expected in Regional Municipality of Niagara during December?
Moderate rainfall is anticipated in Regional Municipality of Niagara during December, with a total of 92.1 mm spread over approximately 14 days. Considering plans for rainy days is advisable.
Will it snow in Regional Municipality of Niagara in December 2025?
Regional Municipality of Niagara experiences an average snowfall of 3.78 cm during December, occurring over 2 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 26 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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