S
M
T
W
T
F
S
27
N/A
28
57°
51°
29
67°
50°
30
69°
58°
1
73°
57°
2
68°
46°
3
62°
41°
4
63°
50°
5
61°
45°
6
61°
45°
7
57°
44°
8
55°
45°
9
58°
42°
10
60°
44°
11
58°
34°
12
63°
43°
13
52°
37°
14
50°
35°
15
49°
43°
16
58°
43°
17
57°
44°
18
59°
43°
19
59°
41°
20
51°
41°
21
57°
34°
22
46°
32°
23
46°
31°
24
52°
42°
25
57°
41°
26
57°
31°
27
44°
29°
28
44°
34°
29
52°
40°
30
54°
41°
31
54°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Longueuil
Longueuil's October 2026 forecast shows daily high temperatures ranging from 44° to 73°, with overnight lows between 29° and 58°. The average high for October is 57° 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 Longueuil. See also: November | December | January.
