S
M
T
W
T
F
S
30
71°
56°
31
71°
60°
1
72°
60°
2
75°
59°
3
77°
61°
4
78°
60°
5
75°
58°
6
70°
59°
7
69°
58°
8
70°
57°
9
74°
58°
10
74°
58°
11
78°
57°
12
78°
58°
13
77°
58°
14
77°
56°
15
66°
54°
16
65°
51°
17
67°
55°
18
71°
55°
19
73°
56°
20
67°
56°
21
75°
49°
22
74°
49°
23
74°
50°
24
73°
44°
25
74°
43°
26
68°
52°
27
73°
52°
28
74°
53°
29
76°
37°
30
72°
38°
1
61°
41°
2
65°
46°
3
65°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Clinton
Clinton's September 2026 forecast shows daily high temperatures ranging from 61° to 78°, with overnight lows between 37° and 61°. 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 Clinton. See also: October | November | December.
