S
M
T
W
T
F
S
27
59°
34°
28
59°
29°
29
51°
29°
30
49°
39°
1
53°
40°
2
54°
41°
3
57°
40°
4
57°
40°
5
54°
39°
6
56°
39°
7
49°
39°
8
52°
34°
9
Hist. Avg.
48°
33°
10
Hist. Avg.
48°
33°
11
Hist. Avg.
48°
32°
12
Hist. Avg.
47°
32°
13
Hist. Avg.
47°
32°
14
Hist. Avg.
46°
31°
15
Hist. Avg.
46°
31°
16
Hist. Avg.
46°
31°
17
Hist. Avg.
45°
30°
18
Hist. Avg.
45°
30°
19
Hist. Avg.
44°
30°
20
Hist. Avg.
44°
29°
21
Hist. Avg.
44°
29°
22
Hist. Avg.
43°
29°
23
Hist. Avg.
43°
28°
24
Hist. Avg.
42°
28°
25
Hist. Avg.
42°
27°
26
Hist. Avg.
41°
27°
27
Hist. Avg.
41°
27°
28
Hist. Avg.
41°
26°
29
Hist. Avg.
40°
26°
30
Hist. Avg.
40°
25°
31
Hist. Avg.
39°
25°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
October Weather in Port-Cartier
Port-Cartier's October 2026 forecast shows daily high temperatures ranging from 49° to 59°, with overnight lows between 29° and 41°. The average high for October is 54° 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 Port-Cartier. See also: November | December | January.