Weather.Knopka.ca
Your local weather forecast for today

St. Catharines, ON — 3 hour detailed weather forecast


ON, Canada » St. Catharines


Forecast for today, Monday, May 11, 2026
Detailed forecast - 3 hours intervals

23:00

Partly cloudy
+8°
feels like: +7°
Partly cloudy
Relative humidity: 73%, pressure: 757 mm
Precipitations: 0.0 mm
Wind: 4 km/h, west
02:00

Overcast
+8°
feels like: +7°
Overcast
Relative humidity: 88%, pressure: 757 mm
Precipitations: 0.0 mm
Wind: 7 km/h, west
05:00

Mainly sunny
+7°
feels like: +5°
Mainly sunny
Relative humidity: 83%, pressure: 757 mm
Precipitations: 0.0 mm
Wind: 7 km/h, northwest
08:00

Mainly sunny
+7°
feels like: +6°
Mainly sunny
Relative humidity: 73%, pressure: 758 mm
Precipitations: 0.0 mm
Wind: 7 km/h, north
11:00

Mainly sunny
+9°
feels like: +7°
Mainly sunny
Relative humidity: 54%, pressure: 758 mm
Precipitations: 0.0 mm
Wind: 11 km/h, northwest
14:00

Partly cloudy
+11°
feels like: +11°
Partly cloudy
Relative humidity: 36%, pressure: 758 mm
Precipitations: 0.0 mm
Wind: 14 km/h, northwest
17:00

Sunny
+11°
feels like: +11°
Clear
Relative humidity: 38%, pressure: 757 mm
Precipitations: 0.0 mm
Wind: 11 km/h, northwest
20:00

Sunny
+9°
feels like: +8°
Clear
Relative humidity: 59%, pressure: 758 mm
Precipitations: 0.0 mm
Wind: 4 km/h, northwest
23:00

Clear
+7°
feels like: +4°
Clear
Relative humidity: 62%, pressure: 759 mm
Precipitations: 0.0 mm
Wind: 11 km/h, north