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Weather in Greater Sudbury for December 2025

Your guide to Greater Sudbury weather in December - trends and predictions

    Official Weather Alert ⚠️

  • Snow Squall Warning - See hour by hour.

    • Snow Forecast ❄️

  • The climate of Greater Sudbury in December is quite snowy, averaging 11 snowy days.
    According to Greater Sudbury snow forecast for December 2025, 11 snowy days are expected until the end of the month. The closest date with snow is Monday, 15 December.

    • Temperatures

  • Until now, December 2025 in Greater Sudbury is cooler than usual, with temperatures averaging -4.5 °C, this is -2.3 °C below the typical seasonal average.

  • Expect cooler weather in the next days in Greater Sudbury with the forecast suggesting a temperature of -5 °C, lower than the historical average.

  • In general, the average temperature in Greater Sudbury at the beginning of December is -2.3 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of -5.6 °C by the end of December.

    • More

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
16
Dry days
Average rainy days
4
Rainy days
Average snowy days
11
Snow days
Average temperatures
-1°/-5°
Temperatures
Average wind speed
15 km/h
Avg max wind
Average humidity
81 %
Avg humidity

Greater Sudbury Weather December

Move between months or click on a day
November
January
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Overcast
-2°
2
Overcast
-0°
3
Overcast
-1°
4
Overcast
-4°
5
Moderate snow
-2°
6
Partly cloudy
-3°
7
Heavy snow
-4°
8
Freezing fog
-3°
9
Moderate or heavy snow showers
2°
10
Light snow showers
-0°
11
Light snow
-4°
12
Moderate or heavy snow showers
-3°
13
Light freezing rain
-4°
14
Overcast
-2°
15
Weather Alert Light snow
-4°
16
Weather Alert Overcast
-1°
17
Overcast
1°
18
Moderate or heavy snow showers
1°
19
Moderate snow
-5°
20
Heavy snow
-3°
21
Partly cloudy
-8°
22
Mist
-5°
23
Overcast
1°
24
Light freezing rain
-6°
25
Light freezing rain
-11°
26
Moderate snow
-9°
27
Light snow
-10°
28
Freezing fog
-11°
29
Light freezing rain
3°
30
Partly cloudy
0°
31
Overcast
-1°

Temperatures trend during December in Greater Sudbury

See the weather trend as well as the moving average line

December weather in Greater Sudbury day by day

Click on a date for more information
November January
Date Weather Temperatures Rain Snow More
1 Dec. Overcast
Overcast
 -2° /-6° 0 mm 0 cm
2 Dec. Overcast
Overcast
 0° /-4° 0 mm 0 cm
3 Dec. Overcast
Overcast
 -1° /-5° 0.9 mm 0.7 cm
4 Dec. Overcast
Overcast
 -4° /-8° 11.2 mm 8.1 cm
5 Dec. Moderate snow
Moderate snow
 -2° /-9° 4.8 mm 3.2 cm
6 Dec. Partly cloudy
Partly cloudy
 -3° /-10° 3.6 mm 2.6 cm
7 Dec. Heavy snow
Heavy snow
 -4° /-10° 2.1 mm 1.5 cm
8 Dec. Freezing fog
Freezing fog
 -3° /-9° 3.5 mm 2.5 cm
9 Dec. Moderate or heavy snow showers
Moderate or heavy snow showers
 2° /-5° 9.5 mm 6.6 cm
10 Dec. Light snow showers
Light snow showers
 0° /-6° 1.5 mm 1.1 cm
11 Dec. Light snow
Light snow
 -4° /-10° 0.1 mm 0 cm
12 Dec. Moderate or heavy snow showers
Moderate or heavy snow showers
 -3° /-9° 0.5 mm 0.4 cm
13 Dec. Light freezing rain
Light freezing rain
 -4° /-10° 2.3 mm 1.7 cm
14 Dec. Overcast
Overcast
 -2° /-12° 0 mm 0 cm
15 Dec. Light snow
Light snow
 -4° /-20° 3.1 mm 2.1 cm
16 Dec. Overcast
Overcast
 -1° /-12° 0 mm 0 cm
17 Dec. Overcast
Overcast
 1° /-11° 0 mm 0 cm
18 Dec. Moderate or heavy snow showers
Moderate or heavy snow showers
 1° /-13° 14.9 mm 1.7 cm
19 Dec. Moderate snow
Moderate snow
 -5° /-16° 4.9 mm 3.5 cm
20 Dec. Heavy snow
Heavy snow
 -3° /-18° 2.1 mm 1.5 cm
21 Dec. Partly cloudy
Partly cloudy
 -8° /-17° 0 mm 0 cm
22 Dec. Mist
Mist
 -5° /-21° 0.3 mm 0.2 cm
23 Dec. Overcast
Overcast
 1° /-3° 0.1 mm 0 cm
24 Dec. Light freezing rain
Light freezing rain
 -6° /-18° 0.2 mm 0.1 cm
25 Dec. Light freezing rain
Light freezing rain
 -11° /-20° 0.2 mm 0.1 cm
26 Dec. Moderate snow
Moderate snow
 -9° /-24° 1 mm 0.7 cm
27 Dec. Light snow
Light snow
 -10° /-24° 0.1 mm 0.1 cm
28 Dec. Freezing fog
Freezing fog
 -11° /-26° 0.3 mm 0.2 cm
29 Dec. Light freezing rain
Light freezing rain
 3° /-1° 0.1 mm 0 cm
30 Dec. Partly cloudy
Partly cloudy
 0° /-3° 19.7 mm 14.2 cm
31 Dec. Overcast
Overcast
 -1° /-3° 0 mm 0 cm
Next
Important Notice
Our weather forecast for Greater Sudbury 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 Greater Sudbury forecast closer to your planned date for the most up-to-date weather information.
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Greater Sudbury in December - FAQ

What are the expected maximum and minimum temperatures in Greater Sudbury during December?
Brace for cold days with temperatures not exceeding -1° and nights that are likely to be freezing. Winter clothing is essential for comfort and safety.
How much rainfall should be expected in Greater Sudbury during December?
Moderate rainfall is anticipated in Greater Sudbury during December, with a total of 88.7 mm spread over approximately 4 days. Considering plans for rainy days is advisable.
Will it snow in Greater Sudbury in December 2025?
Greater Sudbury experiences an average snowfall of 56.19 cm during December, occurring over 11 days.
What are the typical wind conditions in Greater Sudbury during December?
The average wind speed in Greater Sudbury during December is 15 km/h, suggesting breezy to windy conditions, depending on your activities.

Greater Sudbury snow forecast December 2025

Track daily snowfall levels and discover Greater Sudbury’s snowy potential this December ❄️
On average, Greater Sudbury sees 11 snowy days during December, with approximately 56.2 cm of total snowfall.

December rainfall patterns in Greater Sudbury

Explore the daily rainfall trends and prepare for Greater Sudburys December weather 💧
Typically, Greater Sudbury has 4 rainy days in December with a total of 88.7 mm of rainfall.

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Get accurate weather forecasts for Greater Sudbury, located at latitude 46.49 and longitude -80.99. Stay updated with localized weather information tailored for Greater Sudbury.

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