S
M
T
W
T
F
S
30
96°
74°
31
92°
75°
1
89°
76°
2
95°
74°
3
96°
74°
4
91°
75°
5
92°
74°
6
94°
74°
7
96°
73°
8
94°
73°
9
90°
73°
10
92°
73°
11
90°
69°
12
92°
70°
13
90°
71°
14
92°
68°
15
89°
68°
16
89°
69°
17
90°
68°
18
89°
66°
19
86°
65°
20
86°
69°
21
89°
69°
22
89°
69°
23
88°
68°
24
89°
68°
25
88°
67°
26
88°
67°
27
87°
66°
28
87°
67°
29
85°
67°
30
86°
66°
1
85°
60°
2
79°
58°
3
78°
57°
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 78° to 96°, with overnight lows between 57° and 73°. The average high for September is 88° with an average low of 68°. 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.
