S
M
T
W
T
F
S
30
81°
65°
31
83°
68°
1
90°
69°
2
91°
73°
3
86°
68°
4
77°
67°
5
79°
59°
6
77°
54°
7
78°
52°
8
81°
67°
9
76°
60°
10
75°
49°
11
76°
56°
12
81°
60°
13
77°
62°
14
80°
68°
15
73°
53°
16
71°
52°
17
70°
51°
18
65°
46°
19
65°
47°
20
64°
45°
21
66°
48°
22
66°
52°
23
66°
53°
24
71°
53°
25
74°
52°
26
73°
52°
27
72°
51°
28
74°
54°
29
74°
54°
30
73°
53°
1
74°
51°
2
72°
46°
3
59°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Grand Ledge
Grand Ledge's September 2026 forecast shows daily high temperatures ranging from 59° to 81°, with overnight lows between 44° and 68°. The average high for September is 72° with an average low of 53°. 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 Grand Ledge. See also: October | November | December.