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June 13th, 2025 :: 8:50 am EDT   

Local Weather Report for
Cornwall
Ontario, Canada

 Cornwall Weather Forecast Summary  
 
Today
Jun 13th
Saturday
Jun 14th
Sunday
Jun 15th
Monday
Jun 16th
Tuesday
Jun 17th
Cloudy Mix of Cloud and Sun Cloudy Cloudy Thundershowers
17°C
20°C
9°C
23°C
12°C
23°C
12°C
25°C
15°C
 
 Cornwall Detailed Weather Forecast  
 
Friday, June 13th, 2025
Morning Temperature: 15°C
A mix of cloud and sun.
Afternoon Temperature: 16°C
Cloudy.
Evening Temperature: 12°C
Cloudy.
Saturday, June 14th, 2025
Overnight Temperature: 12°C
A mix of cloudy and clear skies.
Morning Temperature: 19°C
Sunny.
Afternoon Temperature: 18°C
A mix of cloud and sun.
Evening Temperature: 10°C
Mostly clear.
Sunday, June 15th, 2025
Overnight Temperature: 13°C
Cloudy.
Morning Temperature: 21°C
A mix of cloud and sun with a slight chance of showers.
Afternoon Temperature: 21°C
Sunny with cloudy periods.
Evening Temperature: 13°C
A mix of cloudy and clear skies.
Monday, June 16th, 2025
Overnight Temperature: 14°C
Cloudy.
Morning Temperature: 21°C
Cloudy.
Afternoon Temperature: 21°C
Cloudy with a chance of showers.
Evening Temperature: 19°C
A mix of cloudy and clear skies.
Tuesday, June 17th, 2025
Overnight Temperature: 18°C
Cloudy.
Morning Temperature: 24°C
Cloudy with a chance of showers or thundershowers.
Afternoon Temperature: 22°C
Cloudy with a few showers. Chance of a thunderstorm.
Evening Temperature: 19°C
Cloudy with showers likely.
Wednesday, June 18th, 2025
Overnight Temperature: 19°C
Cloudy with showers likely.
Morning Temperature: 23°C
A mix of cloud and sun with a chance of showers or thundershowers.
Afternoon Temperature: 27°C
A mix of cloud and sun with showers likely. Chance of a thunderstorm.
Evening Temperature: 23°C
Cloudy with a chance of showers. Slight chance of a thunderstorm. Windy at times.
Thursday, June 19th, 2025
Overnight Temperature: 22°C
Cloudy with a chance of showers or thundershowers.
Morning Temperature: 24°C
Cloudy with showers likely. Chance of a thunderstorm. Windy at times.
Afternoon Temperature: 25°C
Cloudy with showers likely. Chance of a thunderstorm. Windy at times.
Evening Temperature: 22°C
Cloudy with showers likely. Windy at times.
Friday, June 20th, 2025
Overnight Temperature: 13°C
Cloudy with a chance of showers.
Morning Temperature: 11°C
Cloudy with a chance of showers.
Afternoon Temperature: 10°C
Cloudy with showers likely.
Evening Temperature: 7°C
Clear.
Saturday, June 21st, 2025
Overnight Temperature: 9°C
Cloudy.
Morning Temperature: 20°C
Sunny.
Afternoon Temperature: 21°C
Cloudy.
Evening Temperature: 16°C
Cloudy. Windy at times.





 

  [ Local Weather Report ]
Massena, NY 
7:53 AM  11°C
 
 
Lancaster, ON 
 
Apple Hill, ON 
8:00 AM  12°C
 
 
Avondale, ON 
 
Monkland, ON 
8:00 AM  12°C
 
 
South Lancaster, ON 
8:00 AM  13°C
 
 
Glen Gordon, ON 
 
Avonmore, ON 
8:00 AM  12°C
 
 
Sainte Agnes, QC 
8:00 AM  13°C
 
 
Beaver Crossing, QC 
8:00 AM  13°C
 

This WeatherCity Weather Forecast for Cornwall, 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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