S
M
T
W
T
F
S
30
86°
60°
31
87°
66°
1
89°
65°
2
85°
58°
3
84°
55°
4
82°
56°
5
83°
56°
6
84°
60°
7
87°
62°
8
87°
64°
9
89°
63°
10
86°
56°
11
85°
58°
12
84°
63°
13
86°
54°
14
82°
53°
15
81°
53°
16
82°
54°
17
81°
53°
18
82°
55°
19
87°
56°
20
86°
56°
21
86°
59°
22
85°
59°
23
78°
58°
24
81°
58°
25
80°
57°
26
84°
57°
27
84°
56°
28
83°
56°
29
84°
55°
30
84°
56°
1
83°
56°
2
84°
48°
3
83°
47°
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 89°, with overnight lows between 47° and 66°. The average high for September is 84° with an average low of 57°. 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.
