S
M
T
W
T
F
S
28
82°
59°
29
83°
61°
30
94°
70°
1
97°
75°
2
94°
74°
3
95°
74°
4
81°
72°
5
80°
67°
6
80°
64°
7
81°
69°
8
85°
68°
9
85°
68°
10
80°
67°
11
80°
67°
12
81°
62°
13
91°
63°
14
98°
76°
15
90°
69°
16
86°
67°
17
79°
65°
18
76°
64°
19
81°
65°
20
80°
61°
21
80°
63°
22
75°
62°
23
76°
60°
24
78°
63°
25
80°
61°
26
79°
62°
27
81°
60°
28
76°
59°
29
75°
58°
30
76°
59°
31
78°
62°
1
78°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Mississauga
Mississauga's July 2026 forecast shows daily high temperatures ranging from 75° to 98°, with overnight lows between 58° and 76°. The average high for July is 80° with an average low of 63°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how July weather will actually feel in Mississauga. See also: August | September | October.