S
M
T
W
T
F
S
30
82°
57°
31
77°
56°
1
75°
55°
2
74°
53°
3
73°
54°
4
78°
54°
5
53°
41°
6
76°
56°
7
72°
64°
8
72°
55°
9
72°
51°
10
82°
46°
11
72°
53°
12
60°
42°
13
64°
39°
14
57°
39°
15
58°
35°
16
53°
33°
17
60°
36°
18
65°
36°
19
72°
34°
20
74°
51°
21
67°
35°
22
66°
38°
23
67°
48°
24
64°
50°
25
67°
50°
26
63°
60°
27
65°
39°
28
59°
54°
29
67°
50°
30
63°
47°
1
56°
40°
2
57°
47°
3
55°
45°
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 55° to 67°, with overnight lows between 40° and 54°. The average high for September is 60° with an average low of 47°. 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.