S
M
T
W
T
F
S
30
72°
46°
31
68°
46°
1
67°
41°
2
73°
37°
3
68°
41°
4
62°
57°
5
59°
49°
6
58°
49°
7
70°
50°
8
57°
36°
9
64°
34°
10
74°
54°
11
62°
45°
12
68°
50°
13
74°
46°
14
69°
51°
15
67°
43°
16
73°
53°
17
63°
39°
18
62°
41°
19
53°
37°
20
54°
31°
21
58°
37°
22
56°
33°
23
65°
32°
24
78°
43°
25
71°
40°
26
67°
42°
27
63°
39°
28
59°
43°
29
60°
43°
30
61°
46°
1
66°
47°
2
65°
44°
3
62°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Gaspé
Gaspé's September 2026 forecast shows daily high temperatures ranging from 59° to 78°, with overnight lows between 39° and 47°. The average high for September is 65° with an average low of 43°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Gaspé. See also: October | November | December.