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December 9th, 2025 :: 4:51 pm EST   

Local Weather Report for
St Marys
Ontario, Canada

 St Marys Weather Forecast Summary  
 
Today
Dec 9th 		Wednesday
Dec 10th 		Thursday
Dec 11th 		Friday
Dec 12th 		Saturday
Dec 13th
Flurries Mix of rain and snow Flurries Cloudy Cloudy
-1°C
 0°C
-7°C		 -4°C
-6°C		 -3°C
-8°C		 -6°C
-8°C
 
 St Marys Detailed Weather Forecast  
 
Tuesday, December 9th, 2025
Evening Temperature: -1°C
Cloudy with a chance of flurries. Windy.
Wednesday, December 10th, 2025
Overnight Temperature: 0°C
Cloudy with flurries or showers likely. Windy at times.
Morning Temperature: 0°C
Cloudy with flurries or showers likely.
Afternoon Temperature: -4°C
Cloudy with a chance of flurries. Windy.
Evening Temperature: -7°C
Cloudy. Windy.
Thursday, December 11th, 2025
Overnight Temperature: -6°C
A mix of cloudy and clear skies with flurries likely. Windy.
Morning Temperature: -5°C
Cloudy with a chance of flurries. Windy.
Afternoon Temperature: -5°C
A mix of cloud and sun with a chance of flurries. Windy.
Evening Temperature: -5°C
A mix of cloudy and clear skies with a chance of flurries. Windy at times.
Friday, December 12th, 2025
Overnight Temperature: -4°C
Cloudy with a chance of flurries. Windy at times.
Morning Temperature: -4°C
A mix of cloud and sun. Windy at times.
Afternoon Temperature: -7°C
Cloudy.
Evening Temperature: -7°C
Cloudy. Windy at times.
Saturday, December 13th, 2025
Overnight Temperature: -6°C
Cloudy with a chance of flurries. Windy.
Morning Temperature: -6°C
Cloudy with a slight chance of flurries. Windy at times.
Afternoon Temperature: -7°C
Cloudy with a chance of flurries. Windy at times.
Evening Temperature: -8°C
Cloudy with a chance of flurries.
Sunday, December 14th, 2025
Overnight Temperature: -9°C
Mostly cloudy with a chance of flurries. Windy at times.
Morning Temperature: -9°C
Cloudy with a chance of flurries. Windy.
Afternoon Temperature: -11°C
Cloudy with flurries likely. Windy.
Evening Temperature: -18°C
Clear with cloudy periods with a chance of flurries.
Monday, December 15th, 2025
Overnight Temperature: -19°C
Cloudy.
Morning Temperature: -9°C
Cloudy with a slight chance of flurries.
Afternoon Temperature: -8°C
Cloudy with a chance of flurries. Windy at times.
Evening Temperature: -11°C
A mix of cloudy and clear skies.
Tuesday, December 16th, 2025
Overnight Temperature: -15°C
Cloudy.
Morning Temperature: -9°C
Cloudy. Windy at times.
Afternoon Temperature: -7°C
Cloudy. Windy at times.
Evening Temperature: -6°C
Clear. Windy.
Wednesday, December 17th, 2025
Overnight Temperature: -4°C
A mix of cloudy and clear skies. Windy.
Morning Temperature: -1°C
Cloudy. Windy.
Afternoon Temperature: 0°C
Cloudy with a few flurries or showers. Windy.
Evening Temperature: 0°C
Cloudy with a few flurries or showers. Windy.



 

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This WeatherCity Weather Forecast for St Marys, 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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