S
M
T
W
T
F
S
31
76°
49°
1
68°
54°
2
75°
58°
3
80°
58°
4
80°
63°
5
81°
63°
6
77°
58°
7
70°
58°
8
74°
57°
9
71°
60°
10
76°
59°
11
76°
61°
12
77°
61°
13
75°
57°
14
76°
52°
15
67°
48°
16
68°
49°
17
68°
49°
18
70°
53°
19
73°
57°
20
76°
56°
21
76°
58°
22
77°
58°
23
73°
57°
24
74°
51°
25
70°
51°
26
72°
59°
27
75°
58°
28
72°
56°
29
72°
54°
30
73°
56°
1
73°
56°
2
74°
60°
3
79°
60°
4
76°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Mississauga
Mississauga's June 2026 forecast shows daily high temperatures ranging from 67° to 81°, with overnight lows between 48° and 63°. The average high for June is 74° with an average low of 56°. 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 Mississauga. See also: July | August | September.