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St. Catharines, ON — 3 hour detailed weather forecast


ON, Canada » St. Catharines


Forecast for today, Friday, March 20, 2026
Detailed forecast - 3 hours intervals

08:00

Light showers
+2°
feels like: +-2°
Light showers
Relative humidity: 88%, pressure: 750 mm
Precipitations: 0.4 mm
Wind: 14 km/h, southeast
11:00

Rain
+4°
feels like: +1°
Rain
Relative humidity: 90%, pressure: 747 mm
Precipitations: 4.1 mm
Wind: 11 km/h, southwest
14:00

Rain
+6°
feels like: +3°
Rain
Relative humidity: 90%, pressure: 747 mm
Precipitations: 3.7 mm
Wind: 18 km/h, southwest
17:00

Showers
+7°
feels like: +6°
Showers
Relative humidity: 91%, pressure: 746 mm
Precipitations: 1.4 mm
Wind: 7 km/h, northwest
20:00

Overcast
+4°
feels like: +1°
Overcast
Relative humidity: 91%, pressure: 748 mm
Precipitations: 0.1 mm
Wind: 11 km/h, east
23:00

Overcast
+3°
feels like: +0°
Overcast
Relative humidity: 90%, pressure: 749 mm
Precipitations: 0.1 mm
Wind: 7 km/h, north
02:00

Overcast
+2°
feels like: +1°
Overcast
Relative humidity: 92%, pressure: 751 mm
Precipitations: 0.0 mm
Wind: 4 km/h, north
05:00

Overcast
+2°
feels like: +2°
Overcast
Relative humidity: 92%, pressure: 751 mm
Precipitations: 0.0 mm
Wind: 4 km/h, northwest
08:00

A mix of sun and cloud
+1°
feels like: +-2°
A mix of sun and cloud
Relative humidity: 88%, pressure: 753 mm
Precipitations: 0.0 mm
Wind: 7 km/h, north
11:00

A mix of sun and cloud
+4°
feels like: +1°
A mix of sun and cloud
Relative humidity: 78%, pressure: 755 mm
Precipitations: 0.0 mm
Wind: 7 km/h, northeast