S
M
T
W
T
F
S
30
75°
52°
31
70°
50°
1
69°
51°
2
69°
50°
3
70°
49°
4
70°
53°
5
74°
58°
6
77°
58°
7
76°
55°
8
76°
53°
9
73°
57°
10
75°
56°
11
78°
55°
12
73°
56°
13
76°
58°
14
74°
48°
15
77°
43°
16
65°
42°
17
65°
43°
18
66°
49°
19
66°
46°
20
65°
53°
21
72°
53°
22
65°
51°
23
72°
53°
24
73°
53°
25
71°
52°
26
73°
53°
27
73°
43°
28
72°
39°
29
68°
39°
30
60°
44°
1
59°
40°
2
60°
45°
3
60°
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 59° to 78°, with overnight lows between 39° and 58°. The average high for September is 70° with an average low of 50°. 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.
