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July 15th, 2026 :: 2:37 pm EDT   

Local Weather Report for
St Thomas
Ontario, Canada

 St Thomas Weather Forecast Summary  
 
Today
Jul 15th
Thursday
Jul 16th
Friday
Jul 17th
Saturday
Jul 18th
Sunday
Jul 19th
Mostly Sunny Mostly Sunny Mostly Sunny Thundershowers Mostly Cloudy with Showers
32°C
29°C
17°C
30°C
18°C
29°C
18°C
26°C
18°C
 
 St Thomas Detailed Weather Forecast  
 
Wednesday, July 15th, 2026
Afternoon Temperature: 31°C
Mostly sunny. Windy at times.
Evening Temperature: 23°C
Clear with cloudy periods.
Thursday, July 16th, 2026
Overnight Temperature: 18°C
A mix of clear and cloudy skies.
Morning Temperature: 23°C
Sunny with cloudy periods. Windy at times.
Afternoon Temperature: 28°C
Sunny with cloudy periods. Windy at times.
Evening Temperature: 21°C
Mostly clear.
Friday, July 17th, 2026
Overnight Temperature: 18°C
A mix of cloudy and clear skies.
Morning Temperature: 25°C
Sunny with cloudy periods.
Afternoon Temperature: 30°C
A mix of sun and cloud. Windy at times.
Evening Temperature: 22°C
Clear.
Saturday, July 18th, 2026
Overnight Temperature: 19°C
A mix of cloudy and clear skies.
Morning Temperature: 21°C
Cloudy with showers likely. Chance of a thunderstorm.
Afternoon Temperature: 27°C
A mix of cloud and sun with a chance of showers or thundershowers. Windy.
Evening Temperature: 22°C
A mix of cloudy and clear skies with showers. Chance of a thunderstorm. Windy.
Sunday, July 19th, 2026
Overnight Temperature: 20°C
A mix of cloudy and clear skies with a few showers. Windy at times.
Morning Temperature: 20°C
A mix of cloud and sun. Windy at times.
Afternoon Temperature: 26°C
Mostly sunny.
Evening Temperature: 21°C
Mostly clear.
Monday, July 20th, 2026
Overnight Temperature: 18°C
Clear with cloudy periods.
Morning Temperature: 22°C
A mix of cloud and sun. Windy at times.
Afternoon Temperature: 26°C
Sunny with cloudy periods. Windy.
Evening Temperature: 23°C
A mix of cloudy and clear skies. Slight chance of a thunderstorm. Windy at times.
Tuesday, July 21st, 2026
Overnight Temperature: 13°C
Clear with cloudy periods with a chance of showers. Windy.
Morning Temperature: 17°C
Sunny. Windy.
Afternoon Temperature: 18°C
A mix of cloud and sun. Windy.
Evening Temperature: 16°C
Mostly clear. Windy at times.
Wednesday, July 22nd, 2026
Overnight Temperature: 11°C
Clear.
Morning Temperature: 18°C
Sunny. Windy at times.
Afternoon Temperature: 23°C
Sunny. Windy at times.
Evening Temperature: 17°C
Mostly clear.
Thursday, July 23rd, 2026
Overnight Temperature: 14°C
A mix of cloudy and clear skies.
Morning Temperature: 21°C
Sunny. Windy at times.
Afternoon Temperature: 25°C
A mix of sun and cloud with a slight chance of showers. Windy at times.
Evening Temperature: 20°C
Mostly cloudy with a slight chance of showers.





 

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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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