S
M
T
W
T
F
S
27
67°
56°
28
59°
53°
29
62°
52°
30
66°
53°
1
71°
59°
2
65°
52°
3
60°
46°
4
66°
42°
5
57°
43°
6
57°
41°
7
61°
44°
8
63°
51°
9
58°
44°
10
54°
41°
11
64°
46°
12
62°
44°
13
46°
40°
14
53°
43°
15
53°
41°
16
54°
40°
17
45°
36°
18
59°
38°
19
65°
45°
20
58°
45°
21
57°
38°
22
57°
40°
23
53°
38°
24
55°
35°
25
63°
41°
26
54°
40°
27
45°
33°
28
47°
31°
29
67°
48°
30
53°
35°
31
48°
38°
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 48° to 67°, with overnight lows between 35° and 48°. The average high for October is 56° with an average low of 40°. 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.
