St. Catharines, Canada – Weather Tomorrow May 31
Sunday, May 31
Night
02:00am – 08:00am
12°
13°
54°
55°
mostly clear
WNW 15 km/h
9 mph
Morning
08:00am – 02:00pm
14°
20°
57°
68°
partly cloudy
WNW 16 km/h
10 mph
Afternoon
02:00pm – 08:00pm
18°
21°
64°
70°
fair
WSW 20 km/h
12 mph
Evening
08:00pm – 02:00am
14°
17°
57°
63°
mostly clear
W 23 km/h
14 mph
Weather Tomorrow – Summary
Tomorrow, on Sunday morning partly cloudy, during the day fair, evening mostly clear. Temperature: 12° to 21°C54° to 70°F. Wind: 15 to 23 km/h9 to 14 mph.
Data source: MET Norway — Last updated: May 30, 2026, 05:40 UTC