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June 24th, 2026 :: 12:33 pm EDT   

Local Weather Report for
St Thomas
Ontario, Canada

 St Thomas Weather Forecast Summary  
 
Today
Jun 24th 		Thursday
Jun 25th 		Friday
Jun 26th 		Saturday
Jun 27th 		Sunday
Jun 28th
Mix of Sun and Cloud Mix of Cloud and Sun Mostly Sunny Mostly Sunny Mostly Sunny
23°C
 22°C
15°C		 24°C
14°C		 26°C
15°C		 27°C
16°C
 
 St Thomas Detailed Weather Forecast  
 
Wednesday, June 24th, 2026
Afternoon Temperature: 22°C
Mostly cloudy. Slight chance of a thunderstorm.
Evening Temperature: 17°C
Cloudy.
Thursday, June 25th, 2026
Overnight Temperature: 15°C
Mostly cloudy.
Morning Temperature: 16°C
Mostly cloudy with a chance of showers. Slight chance of a thunderstorm. Windy at times.
Afternoon Temperature: 21°C
Mostly sunny with a chance of showers or thundershowers. Windy at times.
Evening Temperature: 18°C
Clear with cloudy periods with a chance of showers. Slight chance of a thunderstorm.
Friday, June 26th, 2026
Overnight Temperature: 15°C
Mostly clear.
Morning Temperature: 19°C
Mostly sunny.
Afternoon Temperature: 24°C
Sunny with cloudy periods.
Evening Temperature: 19°C
Mostly clear.
Saturday, June 27th, 2026
Overnight Temperature: 15°C
Clear.
Morning Temperature: 20°C
Mostly sunny.
Afternoon Temperature: 26°C
Mostly sunny.
Evening Temperature: 20°C
Mostly clear.
Sunday, June 28th, 2026
Overnight Temperature: 16°C
Mostly clear.
Morning Temperature: 21°C
Sunny.
Afternoon Temperature: 27°C
Sunny.
Evening Temperature: 20°C
Clear.
Monday, June 29th, 2026
Overnight Temperature: 16°C
Clear.
Morning Temperature: 22°C
Mostly sunny.
Afternoon Temperature: 28°C
Mostly sunny. Windy at times.
Evening Temperature: 22°C
Clear.
Tuesday, June 30th, 2026
Overnight Temperature: 20°C
Clear.
Morning Temperature: 27°C
Sunny. Chance of a thunderstorm. Windy at times.
Afternoon Temperature: 33°C
Mostly sunny. Chance of a thunderstorm. Windy at times.
Evening Temperature: 26°C
Mostly clear. Chance of a thunderstorm.
Wednesday, July 1st, 2026
Overnight Temperature: 24°C
Mostly clear. Chance of a thunderstorm.
Morning Temperature: 29°C
Sunny. Chance of a thunderstorm. Windy at times.
Afternoon Temperature: 33°C
Sunny. Chance of a thunderstorm. Windy at times.
Evening Temperature: 28°C
Clear with a chance of showers or thundershowers.
Thursday, July 2nd, 2026
Overnight Temperature: 24°C
Clear with a chance of showers or thundershowers.
Morning Temperature: 28°C
Mostly sunny. Chance of a thunderstorm.
Afternoon Temperature: 33°C
Sunny. Chance of a thunderstorm. Windy at times.
Evening Temperature: 26°C
Mostly clear with a chance of showers or thundershowers.



 

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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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