S
M
T
W
T
F
S
30
77°
61°
31
75°
63°
1
80°
65°
2
75°
68°
3
85°
65°
4
86°
61°
5
78°
58°
6
74°
62°
7
77°
61°
8
76°
58°
9
74°
59°
10
79°
61°
11
78°
63°
12
78°
62°
13
77°
58°
14
76°
57°
15
72°
56°
16
72°
61°
17
74°
54°
18
70°
52°
19
70°
52°
20
71°
55°
21
75°
59°
22
78°
60°
23
79°
60°
24
78°
57°
25
76°
55°
26
76°
56°
27
77°
58°
28
76°
57°
29
75°
54°
30
69°
50°
1
65°
48°
2
68°
53°
3
73°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Fort Clinton
Fort Clinton's September 2026 forecast shows daily high temperatures ranging from 65° to 86°, with overnight lows between 48° and 68°. The average high for September is 75° with an average low of 58°. 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 Fort Clinton. See also: October | November | December.
