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July 18th, 2025 :: 6:47 pm EDT   

Local Weather Report for
St Thomas
Ontario, Canada

 St Thomas Weather Forecast Summary  
 
Today
Jul 18th 		Saturday
Jul 19th 		Sunday
Jul 20th 		Monday
Jul 21st 		Tuesday
Jul 22nd
Sunny Cloudy Cloudy Mix of Cloud and Sun Cloudy
24°C
 26°C
13°C		 25°C
13°C		 26°C
12°C		 26°C
14°C
 
 St Thomas Detailed Weather Forecast  
 
Friday, July 18th, 2025
Evening Temperature: 14°C
Clear.
Saturday, July 19th, 2025
Overnight Temperature: 15°C
Clear.
Morning Temperature: 25°C
Cloudy. Windy at times.
Afternoon Temperature: 25°C
Cloudy. Windy at times.
Evening Temperature: 19°C
A mix of cloudy and clear skies with a chance of showers.
Sunday, July 20th, 2025
Overnight Temperature: 18°C
A mix of cloudy and clear skies. Windy at times.
Morning Temperature: 24°C
Cloudy. Windy at times.
Afternoon Temperature: 22°C
A mix of cloud and sun. Windy at times.
Evening Temperature: 13°C
Clear.
Monday, July 21st, 2025
Overnight Temperature: 14°C
Clear.
Morning Temperature: 24°C
Sunny.
Afternoon Temperature: 24°C
Sunny.
Evening Temperature: 15°C
A mix of cloudy and clear skies.
Tuesday, July 22nd, 2025
Overnight Temperature: 16°C
A mix of clear and cloudy skies.
Morning Temperature: 26°C
Cloudy. Windy at times.
Afternoon Temperature: 24°C
Cloudy. Windy at times.
Evening Temperature: 19°C
Cloudy.
Wednesday, July 23rd, 2025
Overnight Temperature: 20°C
Cloudy with a chance of showers. Windy at times.
Morning Temperature: 23°C
Cloudy with showers likely. Windy.
Afternoon Temperature: 26°C
Cloudy with showers likely. Chance of a thunderstorm. Windy at times.
Evening Temperature: 20°C
Cloudy with periods of rain.
Thursday, July 24th, 2025
Overnight Temperature: 20°C
Cloudy. Windy at times.
Morning Temperature: 24°C
Cloudy. Slight chance of a thunderstorm.
Afternoon Temperature: 25°C
Cloudy. Windy at times.
Evening Temperature: 17°C
Clear.
Friday, July 25th, 2025
Overnight Temperature: 18°C
Cloudy with showers likely.
Morning Temperature: 24°C
Cloudy with showers likely. Slight chance of a thunderstorm. Windy at times.
Afternoon Temperature: 26°C
Cloudy with a slight chance of showers or thundershowers. Windy at times.
Evening Temperature: 22°C
Cloudy with a few showers. Chance of a thunderstorm. Windy at times.
Saturday, July 26th, 2025
Overnight Temperature: 20°C
A mix of cloudy and clear skies with a chance of showers. Slight chance of a thunderstorm.
Morning Temperature: 24°C
Cloudy with a chance of showers or thundershowers. Windy at times.
Afternoon Temperature: 25°C
Sunny. Windy at times.
Evening Temperature: 19°C
Clear.



 

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This WeatherCity Weather Forecast for St 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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