S
M
T
W
T
F
S
30
91°
66°
31
91°
68°
1
90°
66°
2
90°
63°
3
88°
67°
4
90°
63°
5
90°
66°
6
91°
67°
7
90°
66°
8
89°
67°
9
89°
66°
10
88°
66°
11
89°
65°
12
87°
65°
13
84°
64°
14
84°
64°
15
83°
63°
16
85°
63°
17
84°
60°
18
83°
58°
19
83°
61°
20
82°
58°
21
81°
56°
22
82°
57°
23
83°
57°
24
84°
60°
25
85°
61°
26
84°
60°
27
85°
60°
28
80°
58°
29
84°
55°
30
83°
54°
1
Hist. Avg.
84°
60°
2
Hist. Avg.
84°
59°
3
Hist. Avg.
83°
59°
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 80° to 91°, with overnight lows between 54° and 68°. The average high for September is 86° with an average low of 62°. 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.
