S
M
T
W
T
F
S
30
71°
42°
31
82°
37°
1
88°
45°
2
66°
46°
3
66°
45°
4
68°
49°
5
75°
49°
6
69°
54°
7
60°
47°
8
62°
39°
9
74°
45°
10
80°
49°
11
65°
45°
12
62°
46°
13
51°
37°
14
62°
36°
15
67°
36°
16
69°
39°
17
68°
40°
18
71°
42°
19
74°
41°
20
74°
42°
21
68°
37°
22
65°
43°
23
64°
38°
24
69°
41°
25
72°
42°
26
72°
42°
27
62°
41°
28
58°
31°
29
55°
29°
30
56°
29°
1
57°
30°
2
60°
33°
3
65°
36°
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 51° to 80°, with overnight lows between 29° and 49°. The average high for September is 65° with an average low of 39°. 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.
