S
M
T
W
T
F
S
27
87°
64°
28
87°
64°
29
86°
63°
30
86°
63°
1
85°
62°
2
86°
63°
3
86°
62°
4
85°
62°
5
84°
61°
6
83°
61°
7
82°
58°
8
76°
53°
9
83°
54°
10
83°
50°
11
81°
47°
12
72°
52°
13
71°
46°
14
77°
47°
15
78°
52°
16
80°
54°
17
81°
54°
18
82°
55°
19
82°
55°
20
83°
54°
21
82°
56°
22
80°
56°
23
81°
55°
24
77°
56°
25
79°
55°
26
79°
47°
27
77°
42°
28
70°
39°
29
64°
36°
30
61°
37°
31
62°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Montreal
Montreal's October 2026 forecast shows daily high temperatures ranging from 61° to 87°, with overnight lows between 36° and 64°. The average high for October is 79° with an average low of 54°. 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 Montreal. See also: November | December | January.
