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September 17th, 2025 :: 2:05 am EDT   

Local Weather Report for
Saint Thomas
Ontario, Canada

 Saint Thomas Weather Forecast Summary  
 
Today
Sep 17th 		Thursday
Sep 18th 		Friday
Sep 19th 		Saturday
Sep 20th 		Sunday
Sep 21st
Sunny Cloudy Cloudy Cloudy Cloudy
30°C
 31°C
12°C		 26°C
11°C		 25°C
11°C		 30°C
16°C
 
 Saint Thomas Detailed Weather Forecast  
 
Wednesday, September 17th, 2025
Overnight Temperature: 14°C
Clear.
Morning Temperature: 27°C
Sunny.
Afternoon Temperature: 25°C
Sunny.
Evening Temperature: 15°C
Clear.
Thursday, September 18th, 2025
Overnight Temperature: 14°C
Clear.
Morning Temperature: 29°C
Cloudy. Windy at times.
Afternoon Temperature: 24°C
A mix of cloud and sun. Slight chance of a thunderstorm. Windy.
Evening Temperature: 14°C
A mix of cloudy and clear skies. Windy at times.
Friday, September 19th, 2025
Overnight Temperature: 11°C
Cloudy.
Morning Temperature: 22°C
Sunny. Windy at times.
Afternoon Temperature: 20°C
Sunny.
Evening Temperature: 12°C
Clear. Windy at times.
Saturday, September 20th, 2025
Overnight Temperature: 11°C
Clear. Windy at times.
Morning Temperature: 22°C
Cloudy. Windy.
Afternoon Temperature: 20°C
Cloudy. Windy at times.
Evening Temperature: 14°C
Cloudy. Windy at times.
Sunday, September 21st, 2025
Overnight Temperature: 17°C
Cloudy. Windy at times.
Morning Temperature: 27°C
Cloudy. Windy.
Afternoon Temperature: 25°C
Cloudy. Windy.
Evening Temperature: 19°C
A mix of cloudy and clear skies with a slight chance of showers. Windy at times.
Monday, September 22nd, 2025
Overnight Temperature: 19°C
A mix of cloudy and clear skies. Windy at times.
Morning Temperature: 28°C
A mix of cloud and sun. Windy.
Afternoon Temperature: 26°C
A mix of cloud and sun. Windy.
Evening Temperature: 24°C
Cloudy. Windy.
Tuesday, September 23rd, 2025
Overnight Temperature: 19°C
Cloudy with showers likely. Windy at times.
Morning Temperature: 22°C
A mix of cloud and sun with showers likely. Slight chance of a thunderstorm. Windy.
Afternoon Temperature: 21°C
Sunny. Wind 30 to 50 km/h.
Evening Temperature: 14°C
Clear.
Wednesday, September 24th, 2025
Overnight Temperature: 20°C
Cloudy. Windy.
Morning Temperature: 27°C
Sunny with a slight chance of showers. Windy.
Afternoon Temperature: 23°C
Sunny. Windy.
Evening Temperature: 14°C
Clear.



 

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This WeatherCity Weather Forecast for Saint Thomas, 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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