S
M
T
W
T
F
S
31
73°
51°
1
62°
54°
2
75°
51°
3
82°
56°
4
82°
57°
5
84°
58°
6
74°
59°
7
72°
57°
8
64°
55°
9
74°
55°
10
81°
61°
11
80°
66°
12
76°
64°
13
83°
64°
14
72°
56°
15
68°
54°
16
72°
58°
17
72°
58°
18
71°
60°
19
71°
58°
20
76°
56°
21
74°
57°
22
65°
58°
23
74°
56°
24
77°
58°
25
77°
62°
26
72°
59°
27
69°
60°
28
71°
62°
29
71°
62°
30
86°
66°
1
91°
71°
2
87°
70°
3
87°
72°
4
76°
71°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in St. Catharines
St. Catharines's June 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for June is ° with an average low of °. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how June weather will actually feel in St. Catharines. See also: July | August | September.
