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June 15th, 2026 :: 3:27 pm EDT   

Local Weather Report for
St Catharines
Ontario, Canada

 Current St Catharines Weather Conditions Updated June 15th at 2:00 pm 
Mostly Cloudy
Temperature:17°C Dew Point:9°C
Barometer:101.1 kPa Wind:N 27 Km/h
Humidity:59.2% Visibility:0 Km
 
 St Catharines Weather Forecast Summary  
 
Today
Jun 15th
Tuesday
Jun 16th
Wednesday
Jun 17th
Thursday
Jun 18th
Friday
Jun 19th
Mostly Sunny Mix of Sun and Cloud Mostly Cloudy with Showers Mostly Cloudy with Showers Mostly Sunny
19°C
22°C
14°C
20°C
14°C
22°C
13°C
20°C
12°C
 
 St Catharines Detailed Weather Forecast  
 
Monday, June 15th, 2026
Afternoon Temperature: 19°C
Sunny with cloudy periods. Windy at times.
Evening Temperature: 15°C
Mostly clear.
Tuesday, June 16th, 2026
Overnight Temperature: 15°C
Clear with cloudy periods.
Morning Temperature: 18°C
Sunny with a slight chance of showers or thundershowers. Windy at times.
Afternoon Temperature: 21°C
Sunny with cloudy periods with a slight chance of showers or thundershowers. Windy at times.
Evening Temperature: 18°C
Mostly cloudy. Slight chance of a thunderstorm.
Wednesday, June 17th, 2026
Overnight Temperature: 14°C
Cloudy with clear periods with a chance of showers.
Morning Temperature: 17°C
Sunny with a chance of showers. Slight chance of a thunderstorm. Windy at times.
Afternoon Temperature: 19°C
Sunny with cloudy periods with a slight chance of showers. Windy.
Evening Temperature: 15°C
Cloudy with showers likely.
Thursday, June 18th, 2026
Overnight Temperature: 18°C
Mostly cloudy with showers. Slight chance of a thunderstorm. Windy.
Morning Temperature: 21°C
Sunny with showers likely. Slight chance of a thunderstorm. Windy.
Afternoon Temperature: 20°C
A mix of cloud and sun. Windy.
Evening Temperature: 15°C
Clear. Windy at times.
Friday, June 19th, 2026
Overnight Temperature: 13°C
Clear.
Morning Temperature: 18°C
Sunny. Windy at times.
Afternoon Temperature: 19°C
A mix of cloud and sun with a chance of showers. Slight chance of a thunderstorm. Windy at times.
Evening Temperature: 14°C
Clear with a chance of showers. Windy at times.
Saturday, June 20th, 2026
Overnight Temperature: 11°C
Clear. Windy at times.
Morning Temperature: 16°C
Sunny. Windy at times.
Afternoon Temperature: 19°C
Mostly sunny with a chance of showers. Slight chance of a thunderstorm. Windy at times.
Evening Temperature: 15°C
Clear with a chance of showers.
Sunday, June 21st, 2026
Overnight Temperature: 12°C
Mostly clear with a slight chance of showers.
Morning Temperature: 16°C
A mix of cloud and sun with a slight chance of showers.
Afternoon Temperature: 20°C
Sunny with cloudy periods.
Evening Temperature: 16°C
Mostly clear.
Monday, June 22nd, 2026
Overnight Temperature: 11°C
Clear with cloudy periods.
Morning Temperature: 16°C
Sunny.
Afternoon Temperature: 22°C
Sunny.
Evening Temperature: 17°C
Mostly clear.
Tuesday, June 23rd, 2026
Overnight Temperature: 13°C
Mostly clear.
Morning Temperature: 19°C
Sunny.
Afternoon Temperature: 24°C
Sunny.
Evening Temperature: 19°C
Mostly clear.





 

  [ Local Weather Report ]
Niagara-on-the-lake, ON 
2:00 PM  17°C
Mostly Cloudy
 
Thorold, ON 
2:00 PM  17°C
Mostly Cloudy
 
Lewiston, NY 
1:53 PM  17°C
Mostly Sunny
 
Youngstown, NY 
 
Niagara Falls, ON 
 
Niagara Falls, NY 
1:53 PM  17°C
Mostly Sunny
 
Pelham, ON 
 
White Pigeon, ON 
 
Welland, ON 
 
Lincoln, ON 
2:00 PM  17°C
 

 
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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