S
M
T
W
T
F
S
27
81°
68°
28
90°
66°
29
96°
67°
30
93°
70°
1
86°
71°
2
79°
70°
3
75°
68°
4
88°
64°
5
86°
57°
6
86°
56°
7
89°
55°
8
93°
57°
9
92°
63°
10
93°
62°
11
93°
59°
12
95°
63°
13
93°
70°
14
83°
72°
15
88°
66°
16
66°
52°
17
68°
45°
18
72°
45°
19
78°
45°
20
79°
50°
21
80°
48°
22
83°
51°
23
85°
53°
24
86°
55°
25
81°
54°
26
79°
55°
27
74°
52°
28
77°
52°
29
77°
52°
30
72°
54°
31
64°
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 64° to 86°, with overnight lows between 42° and 55°. The average high for October is 78° with an average low of 52°. 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.
