S
M
T
W
T
F
S
27
67°
53°
28
66°
51°
29
65°
55°
30
67°
53°
1
63°
35°
2
59°
41°
3
59°
47°
4
57°
47°
5
56°
48°
6
62°
46°
7
64°
43°
8
54°
41°
9
52°
40°
10
51°
35°
11
50°
40°
12
56°
44°
13
60°
45°
14
60°
45°
15
62°
44°
16
60°
42°
17
50°
43°
18
57°
38°
19
47°
35°
20
46°
33°
21
49°
41°
22
55°
42°
23
51°
42°
24
53°
41°
25
50°
41°
26
53°
40°
27
54°
42°
28
51°
40°
29
53°
40°
30
41°
27°
31
42°
27°
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 41° to 67°, with overnight lows between 27° and 55°. The average high for October is 55° with an average low of 42°. 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.
