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August 10th, 2025 :: 9:51 am EDT   

Local Weather Report for
St Catharines
Ontario, Canada

 Current St Catharines Weather Conditions Updated August 10th at 9:00 am 
Overcast
Temperature:81°F Dew Point:64°F
Barometer:30.15 inHg Wind:N 21 Mph
Humidity:57.9% Visibility:0M
 
 St Catharines Weather Forecast Summary  
 
Today
Aug 10th
Monday
Aug 11th
Tuesday
Aug 12th
Wednesday
Aug 13th
Thursday
Aug 14th
Cloudy Mix of Sun and Cloud Cloudy Cloudy Cloudy
89°F
90°F
71°F
91°F
73°F
81°F
70°F
85°F
68°F
 
 St Catharines Detailed Weather Forecast  
 
Sunday, August 10th, 2025
Morning Temperature: 84°F
Cloudy.
Afternoon Temperature: 86°F
Cloudy.
Evening Temperature: 75°F
Cloudy.
Monday, August 11th, 2025
Overnight Temperature: 73°F
A mix of clear and cloudy skies.
Morning Temperature: 87°F
Sunny. Windy at times.
Afternoon Temperature: 88°F
Sunny. Windy at times.
Evening Temperature: 76°F
Clear.
Tuesday, August 12th, 2025
Overnight Temperature: 76°F
Clear with cloudy periods.
Morning Temperature: 88°F
Sunny. Slight chance of a thunderstorm. Windy at times.
Afternoon Temperature: 88°F
A mix of cloud and sun. Slight chance of a thunderstorm. Windy at times.
Evening Temperature: 77°F
Cloudy. Slight chance of a thunderstorm.
Wednesday, August 13th, 2025
Overnight Temperature: 72°F
A mix of cloudy and clear skies with a chance of showers or thundershowers.
Morning Temperature: 80°F
Cloudy with a chance of showers or thundershowers.
Afternoon Temperature: 79°F
Cloudy. Slight chance of a thunderstorm. Windy at times.
Evening Temperature: 71°F
Cloudy with a chance of showers.
Thursday, August 14th, 2025
Overnight Temperature: 69°F
Cloudy.
Morning Temperature: 81°F
Sunny.
Afternoon Temperature: 83°F
Sunny.
Evening Temperature: 70°F
Clear.
Friday, August 15th, 2025
Overnight Temperature: 67°F
Clear.
Morning Temperature: 85°F
Sunny.
Afternoon Temperature: 85°F
Sunny.
Evening Temperature: 71°F
Clear.
Saturday, August 16th, 2025
Overnight Temperature: 71°F
Clear.
Morning Temperature: 88°F
Sunny. Windy at times.
Afternoon Temperature: 88°F
A mix of cloud and sun. Windy at times.
Evening Temperature: 76°F
Cloudy.
Sunday, August 17th, 2025
Overnight Temperature: 75°F
A mix of cloudy and clear skies. Slight chance of a thunderstorm.
Morning Temperature: 79°F
Sunny with cloudy periods with a chance of showers or thundershowers.
Afternoon Temperature: 81°F
Mostly sunny. Windy at times.
Evening Temperature: 69°F
Mostly clear. Windy at times.
Monday, August 18th, 2025
Overnight Temperature: 63°F
Clear. Windy at times.
Morning Temperature: 70°F
Sunny. Windy at times.
Afternoon Temperature: 72°F
Cloudy. Windy at times.
Evening Temperature: 61°F
Cloudy.





 

  [ Local Weather Report ]
Niagara-on-the-lake, ON 
9:00 AM  81°F
Overcast
 
Thorold, ON 
9:00 AM  81°F
Overcast
 
Lewiston, NY 
8:53 AM  77°F
 
 
Youngstown, NY 
9:00 AM  81°F
Overcast
 
Niagara Falls, ON 
8:53 AM  77°F
 
 
Niagara Falls, NY 
8:53 AM  77°F
 
 
Pelham, ON 
9:00 AM  81°F
 
 
White Pigeon, ON 
 
Welland, ON 
 
Lincoln, ON 
9:00 AM  81°F
 

This WeatherCity Weather Forecast for St Catharines, 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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