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December 12th, 2025 :: 2:26 am EST   

Local Weather Report for
Thunder Bay
Ontario, Canada

 Current Thunder Bay Weather Conditions Updated December 12th at 1:00 am 
Overcast
Temperature:-6°C Dew Point:-10°C
Barometer:101.6 kPa Wind:N 10 Km/h
Humidity:72.6% Visibility:0 Km
 
 Thunder Bay Weather Forecast Summary  
 
Today
Dec 12th
Saturday
Dec 13th
Sunday
Dec 14th
Monday
Dec 15th
Tuesday
Dec 16th
Cloudy Cloudy Cloudy Cloudy Cloudy
-7°C
-15°C
-18°C
-8°C
-16°C
-8°C
-12°C
4°C
-10°C
 
 Thunder Bay Detailed Weather Forecast  
 
Friday, December 12th, 2025
Overnight Temperature: -10°C
Cloudy.
Morning Temperature: -8°C
Cloudy with a chance of flurries. Windy at times.
Afternoon Temperature: -10°C
Cloudy with a chance of flurries. Windy.
Evening Temperature: -15°C
A mix of cloudy and clear skies. Windy.
Saturday, December 13th, 2025
Overnight Temperature: -17°C
A mix of cloudy and clear skies. Windy.
Morning Temperature: -17°C
A mix of cloud and sun. Windy.
Afternoon Temperature: -15°C
Cloudy. Windy.
Evening Temperature: -16°C
Cloudy. Windy.
Sunday, December 14th, 2025
Overnight Temperature: -16°C
Clear. Windy at times.
Morning Temperature: -13°C
Sunny. Windy at times.
Afternoon Temperature: -10°C
Cloudy. Windy at times.
Evening Temperature: -8°C
Cloudy with a chance of flurries. Windy.
Monday, December 15th, 2025
Overnight Temperature: -9°C
Cloudy with a chance of flurries. Windy.
Morning Temperature: -10°C
A mix of cloud and sun. Windy at times.
Afternoon Temperature: -9°C
Cloudy.
Evening Temperature: -12°C
A mix of cloudy and clear skies.
Tuesday, December 16th, 2025
Overnight Temperature: -8°C
Cloudy. Windy at times.
Morning Temperature: -2°C
Cloudy with a chance of flurries. Windy.
Afternoon Temperature: 0°C
Cloudy. Windy.
Evening Temperature: 2°C
Cloudy with a slight chance of showers. Showers possibly mixed with wet flurries. Windy.
Wednesday, December 17th, 2025
Overnight Temperature: -1°C
Clear with cloudy periods with a slight chance of flurries or showers. Risk of freezing rain. Wind 30 to 50 km/h.
Morning Temperature: -4°C
Cloudy. Windy at times.
Afternoon Temperature: -4°C
Cloudy.
Evening Temperature: -5°C
Cloudy with a chance of flurries. Windy at times.
Thursday, December 18th, 2025
Overnight Temperature: -2°C
Cloudy with a few flurries. Windy at times.
Morning Temperature: 1°C
A mix of cloud and sun with a chance of flurries or showers. Risk of freezing rain. Windy.
Afternoon Temperature: -3°C
Cloudy. Windy.
Evening Temperature: -10°C
A mix of cloudy and clear skies. Windy at times.
Friday, December 19th, 2025
Overnight Temperature: -13°C
Cloudy. Windy at times.
Morning Temperature: -14°C
A mix of cloud and sun. Windy at times.
Afternoon Temperature: -14°C
Sunny.
Evening Temperature: -16°C
Clear with cloudy periods.
Saturday, December 20th, 2025
Overnight Temperature: -15°C
A mix of cloudy and clear skies.
Morning Temperature: -11°C
Mostly cloudy.
Afternoon Temperature: -6°C
Cloudy with a chance of flurries.
Evening Temperature: -5°C
Cloudy with flurries likely. Windy at times.





 

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This WeatherCity Weather Forecast for Thunder Bay, Ontario, Canada is computed using a computer-generated forecast model and should be considered experimental. Please confirm this weather information with your official weather information office

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