S
M
T
W
T
F
S
27
68°
49°
28
68°
42°
29
62°
37°
30
57°
37°
1
57°
45°
2
62°
45°
3
60°
38°
4
55°
37°
5
55°
45°
6
57°
47°
7
64°
48°
8
66°
44°
9
65°
42°
10
56°
39°
11
52°
37°
12
53°
43°
13
56°
43°
14
57°
42°
15
59°
44°
16
60°
44°
17
60°
38°
18
59°
35°
19
53°
32°
20
48°
30°
21
47°
31°
22
47°
39°
23
48°
38°
24
54°
31°
25
47°
30°
26
46°
30°
27
45°
34°
28
46°
29°
29
47°
26°
30
53°
27°
31
40°
32°
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 40° to 68°, with overnight lows between 26° and 49°. The average high for October is 55° with an average low of 38°. 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.
