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Thunder Bay District (Thunder Bay)
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Canada weather

Weather in Thunder Bay District for December 2025

Your guide to Thunder Bay District weather in December - trends and predictions

    Snow Forecast ❄️

  • Thunder Bay District typically experiences moderate snowfall in December, with an average of 7 snowy days.
    According to Thunder Bay District snow forecast for December 2025, 7 snowy days are expected in the next 2 weeks. The closest date with snow is Tuesday, 16 December.

    • Temperatures

  • Until now, December 2025 in Thunder Bay District is cooler than usual, with temperatures averaging -5.3 °C, this is -3.1 °C below the typical seasonal average.

  • The forecast for the next days in Thunder Bay District predicts a temperature of -8.1 °C, which is cooler than the historical average.

  • In general, the average temperature in Thunder Bay District at the beginning of December is -2.1 °C. As the month progressed, temperatures tended to moderately rise, reaching an average of -0.9 °C by the end of December.

    • More

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Average dry days
16
Dry days
Average rainy days
8
Rainy days
Average snowy days
7
Snow days
Average temperatures
-1°/-6°
Temperatures
Average wind speed
18 km/h
Avg max wind
Average humidity
79 %
Avg humidity

Thunder Bay District Weather December

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

Temperatures trend during December in Thunder Bay District

See the weather trend as well as the moving average line

December weather in Thunder Bay District day by day

Click on a date for more information
November January
Date Weather Temperatures Rain Snow More
1 Dec. Partly cloudy
Partly cloudy
 0° /-8° 0 mm 0 cm
2 Dec. Overcast
Overcast
 -2° /-9° 0 mm 0 cm
3 Dec. Light snow showers
Light snow showers
 -2° /-9° 3.8 mm 0.6 cm
4 Dec. Overcast
Overcast
 -3° /-10° 4.6 mm 3.3 cm
5 Dec. Light snow
Light snow
 -3° /-8° 0.9 mm 0.6 cm
6 Dec. Light snow
Light snow
 -3° /-9° 0.6 mm 0 cm
7 Dec. Overcast
Overcast
 -2° /-10° 3.9 mm 2.2 cm
8 Dec. Fog
Fog
 0° /-7° 4.9 mm 3.5 cm
9 Dec. Light snow
Light snow
 -1° /-7° 24.6 mm 3.3 cm
10 Dec. Partly cloudy
Partly cloudy
 -4° /-9° 0 mm 0 cm
11 Dec. Overcast
Overcast
 -4° /-14° 0 mm 0 cm
12 Dec. Light snow
Light snow
 -6° /-13° 0 mm 0 cm
13 Dec. Overcast
Overcast
 -18° /-26° 0 mm 0 cm
14 Dec. Partly cloudy
Partly cloudy
 -12° /-19° 0 mm 0 cm
15 Dec. Overcast
Overcast
 -5° /-13° 0 mm 0 cm
16 Dec. Light freezing rain
Light freezing rain
 -2° /-14° 1.9 mm 1.4 cm
17 Dec. Light freezing rain
Light freezing rain
 -4° /-7° 0.4 mm 0.2 cm
18 Dec. Heavy snow
Heavy snow
 1° /-10° 2.5 mm 1.7 cm
19 Dec. Cloudy
Cloudy
 -13° /-17° 0 mm 0 cm
20 Dec. Moderate snow
Moderate snow
 -6° /-18° 1 mm 0.7 cm
21 Dec. Partly cloudy
Partly cloudy
 -14° /-17° 0 mm 0 cm
22 Dec. Cloudy
Cloudy
 -14° /-19° 0 mm 0 cm
23 Dec. Light freezing rain
Light freezing rain
 -10° /-17° 0.4 mm 0.3 cm
24 Dec. Sunny
Sunny
 -7° /-16° 0 mm 0 cm
25 Dec. Freezing fog
Freezing fog
 -4° /-14° 0.4 mm 0.3 cm
26 Dec. Mist
Mist
 -6° /-19° 0 mm 0 cm
27 Dec. Light freezing rain
Light freezing rain
 2° /0° 0.1 mm 0 cm
28 Dec. Cloudy
Cloudy
 2° /0° 24 mm 0 cm
29 Dec. Partly cloudy
Partly cloudy
 1° /-1° 0 mm 0 cm
30 Dec. Cloudy
Cloudy
 0° /-3° 0 mm 0 cm
31 Dec. Moderate snow
Moderate snow
 -1° /-5° 0.2 mm 0.1 cm
Next
Important Notice
Our weather forecast for Thunder Bay District 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 Thunder Bay District forecast closer to your planned date for the most up-to-date weather information.
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Thunder Bay District in December - FAQ

What are the expected maximum and minimum temperatures in Thunder Bay District 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 Thunder Bay District during December?
Moderate rainfall is anticipated in Thunder Bay District during December, with a total of 95.2 mm spread over approximately 8 days. Considering plans for rainy days is advisable.
Will it snow in Thunder Bay District in December 2025?
Thunder Bay District experiences an average snowfall of 15.145 cm during December, occurring over 7 days.
What are the typical wind conditions in Thunder Bay District during December?
The average wind speed in Thunder Bay District during December is 18 km/h, suggesting breezy to windy conditions, depending on your activities.

Thunder Bay District snow forecast December 2025

Track daily snowfall levels and discover Thunder Bay District’s snowy potential this December ❄️
On average, Thunder Bay District sees 7 snowy days during December, with approximately 15.1 cm of total snowfall.

December rainfall patterns in Thunder Bay District

Explore the daily rainfall trends and prepare for Thunder Bay Districts December weather 💧
Typically, Thunder Bay District has 8 rainy days in December with a total of 95.2 mm of rainfall.
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Location coordinates Where is Thunder Bay District?

Get accurate weather forecasts for Thunder Bay District, located at latitude 48.382 and longitude -89.25. Stay updated with localized weather information tailored for Thunder Bay District.

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