S
M
T
W
T
F
S
27
67°
52°
28
59°
52°
29
61°
45°
30
65°
43°
1
72°
58°
2
64°
46°
3
60°
40°
4
66°
38°
5
58°
42°
6
56°
35°
7
62°
35°
8
63°
45°
9
58°
35°
10
56°
40°
11
68°
52°
12
64°
46°
13
54°
40°
14
52°
37°
15
54°
41°
16
56°
44°
17
51°
39°
18
52°
37°
19
56°
40°
20
52°
38°
21
54°
41°
22
56°
32°
23
47°
31°
24
46°
31°
25
51°
41°
26
57°
36°
27
52°
28°
28
44°
30°
29
43°
31°
30
48°
38°
31
50°
30°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Saint-Jean-sur-Richelieu
Saint-Jean-sur-Richelieu's October 2026 forecast shows daily high temperatures ranging from 43° to 68°, with overnight lows between 28° and 52°. The average high for October is 53° with an average low of 37°. 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 Saint-Jean-sur-Richelieu. See also: November | December | January.
