S
M
T
W
T
F
S
27
62°
46°
28
54°
43°
29
56°
37°
30
58°
37°
1
60°
49°
2
57°
39°
3
49°
28°
4
52°
26°
5
44°
33°
6
37°
28°
7
41°
29°
8
49°
35°
9
38°
28°
10
39°
31°
11
58°
45°
12
54°
40°
13
42°
28°
14
36°
28°
15
37°
29°
16
44°
28°
17
38°
31°
18
39°
29°
19
48°
29°
20
42°
31°
21
41°
26°
22
39°
30°
23
33°
21°
24
33°
22°
25
36°
32°
26
35°
21°
27
34°
19°
28
31°
23°
29
31°
22°
30
35°
26°
31
34°
20°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Lac-Jacques-Cartier
Lac-Jacques-Cartier's October 2026 forecast shows daily high temperatures ranging from 31° to 58°, with overnight lows between 19° and 45°. The average high for October is 39° with an average low of 28°. 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 Lac-Jacques-Cartier. See also: November | December | January.