S
M
T
W
T
F
S
30
68°
56°
31
71°
54°
1
70°
54°
2
70°
55°
3
65°
54°
4
68°
53°
5
69°
52°
6
69°
52°
7
67°
55°
8
71°
52°
9
75°
53°
10
69°
55°
11
66°
54°
12
65°
52°
13
60°
54°
14
63°
54°
15
66°
54°
16
69°
52°
17
69°
50°
18
69°
51°
19
63°
51°
20
63°
51°
21
67°
51°
22
66°
52°
23
68°
51°
24
67°
53°
25
65°
51°
26
67°
53°
27
66°
51°
28
66°
50°
29
65°
48°
30
60°
44°
1
59°
44°
2
62°
51°
3
61°
46°
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 69°, with overnight lows between 44° and 53°. The average high for September is 65° 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.
