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February 18th, 2026 :: 9:28 am EST   

Local Weather Report for
St Catharines
Ontario, Canada

 Current St Catharines Weather Conditions Updated February 18th at 8:00 am 
light rain mist
Temperature:2°C Dew Point:2°C
Barometer:101 kPa Wind:N 41 Km/h
Humidity:100.0% Visibility:0 Km
 
 St Catharines Weather Forecast Summary  
 
Today
Feb 18th
Thursday
Feb 19th
Friday
Feb 20th
Saturday
Feb 21st
Sunday
Feb 22nd
Mix of rain and snow Cloudy Cloudy Cloudy Mix of rain and snow
1°C
2°C
-2°C
8°C
1°C
2°C
0°C
-1°C
-4°C
 
 St Catharines Detailed Weather Forecast  
 
Wednesday, February 18th, 2026
Morning Temperature: 1°C
Cloudy with a few flurries or showers. Risk of freezing rain. Windy at times.
Afternoon Temperature: 1°C
Cloudy with flurries or showers likely. Risk of freezing rain.
Evening Temperature: -1°C
Cloudy with a slight chance of flurries.
Thursday, February 19th, 2026
Overnight Temperature: -2°C
Cloudy.
Morning Temperature: 1°C
Cloudy.
Afternoon Temperature: 1°C
Cloudy.
Evening Temperature: 2°C
Cloudy.
Friday, February 20th, 2026
Overnight Temperature: 5°C
Cloudy with a chance of showers. Showers possibly mixed with wet flurries.
Morning Temperature: 8°C
Cloudy with a chance of showers. Windy at times.
Afternoon Temperature: 4°C
Cloudy. Windy.
Evening Temperature: 1°C
Cloudy. Windy at times.
Saturday, February 21st, 2026
Overnight Temperature: 0°C
Cloudy. Windy at times.
Morning Temperature: 2°C
Cloudy. Windy at times.
Afternoon Temperature: 1°C
Cloudy.
Evening Temperature: 0°C
Cloudy.
Sunday, February 22nd, 2026
Overnight Temperature: -1°C
Cloudy with a slight chance of flurries or showers.
Morning Temperature: -2°C
Cloudy with flurries likely.
Afternoon Temperature: -3°C
Cloudy with a chance of flurries.
Evening Temperature: -3°C
Cloudy with a chance of flurries.
Monday, February 23rd, 2026
Overnight Temperature: -4°C
Cloudy with a chance of flurries.
Morning Temperature: -3°C
Cloudy with a chance of flurries. Windy at times.
Afternoon Temperature: -5°C
Cloudy with a chance of flurries. Windy at times.
Evening Temperature: -10°C
Cloudy with a chance of flurries. Windy at times.
Tuesday, February 24th, 2026
Overnight Temperature: -13°C
Cloudy with a chance of flurries. Windy at times.
Morning Temperature: -12°C
Cloudy with a slight chance of flurries. Windy at times.
Afternoon Temperature: -11°C
Cloudy. Windy at times.
Evening Temperature: -14°C
Cloudy.
Wednesday, February 25th, 2026
Overnight Temperature: -13°C
Cloudy.
Morning Temperature: -10°C
Cloudy with a chance of flurries. Windy at times.
Afternoon Temperature: -6°C
Cloudy with a few flurries. Windy at times.
Evening Temperature: -7°C
Cloudy with a few flurries. Windy at times.





 

  [ Local Weather Report ]
Niagara-on-the-lake, ON 
8:00 AM  2°C
light rain mist
 
Thorold, ON 
8:00 AM  2°C
light rain mist
 
Lewiston, NY 
7:53 AM  2°C
light rain mist
 
Youngstown, NY 
 
Niagara Falls, ON 
 
Niagara Falls, NY 
7:53 AM  2°C
light rain mist
 
Pelham, ON 
 
White Pigeon, ON 
 
Welland, ON 
 
Lincoln, ON 
8:00 AM  1°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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