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St. Catharines, ON — 3 hour detailed weather forecast


ON, Canada » St. Catharines


Forecast for today, Wednesday, November 19, 2025
Detailed forecast - 3 hours intervals

07:00

Partly cloudy

feels like: 0°
Partly cloudy
Relative humidity: 80%, pressure: 758 mm
Precipitations: 0.0 mm
Wind: 4 km/h, east
10:00

A mix of sun and cloud
+3°
feels like: +2°
A mix of sun and cloud
Relative humidity: 66%, pressure: 759 mm
Precipitations: 0.0 mm
Wind: 4 km/h, east
13:00

A mix of sun and cloud
+5°
feels like: +3°
A mix of sun and cloud
Relative humidity: 63%, pressure: 759 mm
Precipitations: 0.0 mm
Wind: 4 km/h, northwest
16:00

Partly cloudy
+3°
feels like: +3°
Partly cloudy
Relative humidity: 66%, pressure: 759 mm
Precipitations: 0.0 mm
Wind: 4 km/h, north
19:00

A mix of sun and cloud
+2°
feels like: +2°
A mix of sun and cloud
Relative humidity: 73%, pressure: 759 mm
Precipitations: 0.0 mm
Wind: 0 km/h, east
22:00

A mix of sun and cloud
+1°
feels like: +-1°
A mix of sun and cloud
Relative humidity: 77%, pressure: 759 mm
Precipitations: 0.0 mm
Wind: 4 km/h, southeast
01:00

Overcast

feels like: -2°
Overcast
Relative humidity: 87%, pressure: 759 mm
Precipitations: 0.0 mm
Wind: 4 km/h, southeast
04:00

A mix of sun and cloud

feels like: -2°
A mix of sun and cloud
Relative humidity: 84%, pressure: 758 mm
Precipitations: 0.0 mm
Wind: 4 km/h, south
07:00

Mainly sunny
-1°
feels like: -1°
Mainly sunny
Relative humidity: 88%, pressure: 759 mm
Precipitations: 0.0 mm
Wind: 0 km/h, south
10:00

Sunny
+4°
feels like: +2°
Clear
Relative humidity: 70%, pressure: 759 mm
Precipitations: 0.0 mm
Wind: 4 km/h, south