S
M
T
W
T
F
S
30
82°
64°
31
86°
72°
1
91°
73°
2
93°
73°
3
95°
73°
4
84°
72°
5
81°
66°
6
77°
61°
7
79°
61°
8
86°
66°
9
88°
70°
10
76°
59°
11
79°
63°
12
82°
64°
13
83°
59°
14
81°
65°
15
86°
64°
16
76°
61°
17
73°
55°
18
70°
52°
19
70°
53°
20
72°
52°
21
69°
51°
22
70°
53°
23
69°
52°
24
78°
56°
25
73°
56°
26
77°
55°
27
77°
56°
28
76°
56°
29
75°
55°
30
74°
55°
1
72°
52°
2
68°
53°
3
74°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Bellefontaine
Bellefontaine's September 2026 forecast shows daily high temperatures ranging from 68° to 86°, with overnight lows between 51° and 65°. The average high for September is 75° 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 Bellefontaine. See also: October | November | December.
