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June 18th, 2026 :: 4:30 pm EDT   

Local Weather Report for
St Catharines
Ontario, Canada

 Current St Catharines Weather Conditions Updated June 18th at 3:00 pm 
Overcast
Temperature:22°C Dew Point:14°C
Barometer:99.7 kPa Wind:N 69 Km/h
Humidity:60.5% Visibility:0 Km
 
 St Catharines Weather Forecast Summary  
 
Today
Jun 18th 		Friday
Jun 19th 		Saturday
Jun 20th 		Sunday
Jun 21st 		Monday
Jun 22nd
Thundershowers Sunny Mostly Sunny Mostly Sunny Mostly Sunny
22°C
 20°C
13°C		 21°C
12°C		 22°C
11°C		 22°C
14°C
 
 St Catharines Detailed Weather Forecast  
 
Thursday, June 18th, 2026
Afternoon Temperature: 19°C
A mix of cloud and sun with a chance of showers. Windy.
Evening Temperature: 15°C
Mostly clear with a chance of showers. Windy at times.
Friday, June 19th, 2026
Overnight Temperature: 13°C
Clear. Windy at times.
Morning Temperature: 17°C
Sunny with a slight chance of showers or thundershowers. Windy at times.
Afternoon Temperature: 19°C
Mostly sunny with a chance of showers or thundershowers. Windy at times.
Evening Temperature: 16°C
Clear with a chance of showers. Windy at times.
Saturday, June 20th, 2026
Overnight Temperature: 13°C
Mostly clear. Windy at times.
Morning Temperature: 17°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: 15°C
Mostly clear with a chance of showers. Slight chance of a thunderstorm.
Sunday, June 21st, 2026
Overnight Temperature: 12°C
Clear with cloudy periods with a chance of showers.
Morning Temperature: 16°C
Sunny with cloudy periods.
Afternoon Temperature: 21°C
Mostly sunny.
Evening Temperature: 17°C
Clear with cloudy periods.
Monday, June 22nd, 2026
Overnight Temperature: 14°C
Mostly clear.
Morning Temperature: 18°C
Mostly sunny.
Afternoon Temperature: 22°C
Sunny. Windy at times.
Evening Temperature: 17°C
Clear. Windy at times.
Tuesday, June 23rd, 2026
Overnight Temperature: 12°C
Clear.
Morning Temperature: 17°C
Sunny.
Afternoon Temperature: 23°C
Sunny with cloudy periods.
Evening Temperature: 18°C
A mix of cloudy and clear skies.
Wednesday, June 24th, 2026
Overnight Temperature: 15°C
A mix of cloudy and clear skies.
Morning Temperature: 20°C
A mix of cloud and sun.
Afternoon Temperature: 24°C
Mostly sunny with a slight chance of showers or thundershowers.
Evening Temperature: 16°C
A mix of cloudy and clear skies with a slight chance of showers.
Thursday, June 25th, 2026
Overnight Temperature: 14°C
A mix of cloudy and clear skies.
Morning Temperature: 18°C
Cloudy with sunny periods. Slight chance of a thunderstorm.
Afternoon Temperature: 19°C
A mix of sun and cloud with a chance of showers or thundershowers.
Evening Temperature: 16°C
Clear with a chance of showers. Slight chance of a thunderstorm.
Friday, June 26th, 2026
Overnight Temperature: 13°C
Mostly clear.
Morning Temperature: 16°C
A mix of cloud and sun.
Afternoon Temperature: 22°C
Mostly sunny.
Evening Temperature: 18°C
Mostly clear.



 

  [ Local Weather Report ]
Niagara-on-the-lake, ON 
3:00 PM  22°C
Overcast
 
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3:00 PM  22°C
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2:53 PM  22°C
Overcast
 
Youngstown, NY 
 
Niagara Falls, ON 
 
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2:53 PM  22°C
Overcast
 
Pelham, ON 
 
White Pigeon, ON 
 
Welland, ON 
 
Lincoln, ON 
3:00 PM  20°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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