St. Catharines
December
Weather in St. Catharines for December 2025
Your guide to St. Catharines weather in December - trends and predictions
With an average of 2 snowy days, St. Catharines usually enjoys a light touch of snow in December.
In general, the average temperature in St. Catharines 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 St. Catharines 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 ❄️
Temperatures
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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
St. Catharines 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 St. Catharines
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 St. Catharines 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 St. Catharines forecast closer to your planned date for the most up-to-date weather information.
St. Catharines in December - FAQ
What are the expected maximum and minimum temperatures in St. Catharines 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 St. Catharines during December?
Moderate rainfall is anticipated in St. Catharines 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 St. Catharines in December 2025?
St. Catharines experiences an average snowfall of 3.78 cm during December, occurring over 2 days.
What are the typical wind conditions in St. Catharines during December?
The average wind speed in St. Catharines during December is 26 km/h, suggesting breezy to windy conditions, depending on your activities.
St. Catharines snow forecast December 2025
Track daily snowfall levels and discover St. Catharines’s snowy potential this December ❄️
December rainfall patterns in St. Catharines
Explore the daily rainfall trends and prepare for St. Cathariness December weather 💧
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Where is St. Catharines?Get accurate weather forecasts for St. Catharines, located at latitude 43.171 and longitude -79.243. Stay updated with localized weather information tailored for St. Catharines.
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