S
M
T
W
T
F
S
30
62°
52°
31
68°
55°
1
70°
55°
2
65°
54°
3
69°
55°
4
64°
54°
5
65°
55°
6
61°
54°
7
66°
54°
8
68°
53°
9
68°
54°
10
67°
54°
11
69°
53°
12
68°
53°
13
68°
52°
14
67°
51°
15
57°
49°
16
58°
50°
17
62°
50°
18
62°
49°
19
63°
51°
20
65°
51°
21
66°
48°
22
66°
47°
23
63°
45°
24
64°
34°
25
64°
46°
26
57°
44°
27
62°
40°
28
53°
46°
29
61°
34°
30
62°
33°
1
47°
44°
2
58°
43°
3
60°
36°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Gimli
Gimli's September 2026 forecast shows daily high temperatures ranging from 47° to 70°, with overnight lows between 33° and 55°. The average high for September is 63° with an average low of 49°. 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 Gimli. See also: October | November | December.