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St. Catharines, ON — 3 hour detailed weather forecast


ON, Canada » St. Catharines


Forecast for today, Sunday, April 19, 2026
Detailed forecast - 3 hours intervals

11:00

Overcast
+6°
feels like: +2°
Overcast
Relative humidity: 50%, pressure: 753 mm
Precipitations: 0.3 mm
Wind: 22 km/h, northwest
14:00

Partly cloudy
+6°
feels like: +3°
Partly cloudy
Relative humidity: 56%, pressure: 753 mm
Precipitations: 0.3 mm
Wind: 18 km/h, west
17:00

A mix of sun and cloud
+7°
feels like: +3°
A mix of sun and cloud
Relative humidity: 52%, pressure: 752 mm
Precipitations: 0.2 mm
Wind: 18 km/h, west
20:00

Overcast
+3°
feels like: +-1°
Overcast
Relative humidity: 83%, pressure: 754 mm
Precipitations: 1.1 mm
Wind: 11 km/h, southwest
23:00

Overcast
+3°
feels like: +-2°
Overcast
Relative humidity: 57%, pressure: 756 mm
Precipitations: 0.2 mm
Wind: 18 km/h, northwest
02:00

Mainly sunny

feels like: -5°
Mainly sunny
Relative humidity: 57%, pressure: 757 mm
Precipitations: 0.0 mm
Wind: 22 km/h, northwest
05:00

Mainly sunny

feels like: -5°
Mainly sunny
Relative humidity: 50%, pressure: 758 mm
Precipitations: 0.0 mm
Wind: 18 km/h, northwest
08:00

Partly cloudy

feels like: -5°
Partly cloudy
Relative humidity: 56%, pressure: 760 mm
Precipitations: 0.4 mm
Wind: 18 km/h, northwest
11:00

Partly cloudy
+3°
feels like: +-2°
Partly cloudy
Relative humidity: 44%, pressure: 762 mm
Precipitations: 0.4 mm
Wind: 22 km/h, northwest