S
M
T
W
T
F
S
31
61°
47°
1
67°
52°
2
71°
53°
3
69°
55°
4
71°
61°
5
70°
62°
6
71°
61°
7
69°
57°
8
73°
62°
9
70°
59°
10
74°
63°
11
75°
64°
12
76°
63°
13
76°
61°
14
77°
60°
15
76°
66°
16
69°
53°
17
70°
53°
18
71°
57°
19
72°
60°
20
74°
60°
21
75°
61°
22
75°
61°
23
73°
62°
24
75°
56°
25
72°
55°
26
73°
62°
27
75°
62°
28
73°
61°
29
73°
59°
30
74°
60°
1
73°
60°
2
74°
64°
3
77°
64°
4
76°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Port Colborne
Port Colborne's June 2026 forecast shows daily high temperatures ranging from 69° to 77°, with overnight lows between 53° and 66°. The average high for June is 73° with an average low of 60°. 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 Port Colborne. See also: July | August | September.