S
M
T
W
T
F
S
30
92°
70°
31
93°
72°
1
96°
72°
2
97°
71°
3
96°
73°
4
94°
73°
5
95°
73°
6
92°
68°
7
80°
66°
8
N/A
9
82°
60°
10
83°
58°
11
85°
66°
12
84°
68°
13
82°
71°
14
87°
58°
15
70°
52°
16
73°
54°
17
73°
52°
18
70°
49°
19
68°
50°
20
72°
49°
21
69°
51°
22
75°
51°
23
80°
58°
24
79°
58°
25
80°
58°
26
80°
57°
27
79°
57°
28
79°
56°
29
77°
56°
30
76°
52°
1
71°
48°
2
76°
54°
3
76°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Grant City
Grant City's September 2026 forecast shows daily high temperatures ranging from 68° to 87°, with overnight lows between 48° and 71°. The average high for September is 77° with an average low of 56°. 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 Grant City. See also: October | November | December.
