S
M
T
W
T
F
S
27
76°
54°
28
71°
60°
29
71°
61°
30
74°
56°
1
74°
63°
2
67°
47°
3
63°
51°
4
67°
48°
5
61°
44°
6
62°
48°
7
68°
51°
8
68°
50°
9
66°
46°
10
62°
52°
11
68°
55°
12
66°
53°
13
61°
46°
14
59°
49°
15
59°
47°
16
60°
39°
17
62°
44°
18
61°
45°
19
53°
37°
20
49°
34°
21
49°
38°
22
52°
36°
23
56°
42°
24
55°
40°
25
50°
38°
26
48°
35°
27
47°
38°
28
48°
36°
29
54°
43°
30
58°
43°
31
58°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Mississauga
Mississauga's October 2026 forecast shows daily high temperatures ranging from 47° to 68°, with overnight lows between 34° and 55°. The average high for October is 58° with an average low of 44°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how October weather will actually feel in Mississauga. See also: November | December | January.
