S
M
T
W
T
F
S
30
77°
60°
31
81°
60°
1
82°
59°
2
82°
60°
3
80°
59°
4
74°
56°
5
75°
56°
6
80°
51°
7
73°
55°
8
77°
57°
9
80°
59°
10
81°
56°
11
81°
48°
12
76°
54°
13
73°
53°
14
71°
57°
15
77°
56°
16
79°
57°
17
80°
56°
18
77°
56°
19
76°
55°
20
78°
48°
21
76°
43°
22
67°
52°
23
68°
46°
24
71°
53°
25
73°
53°
26
76°
46°
27
75°
42°
28
65°
41°
29
66°
46°
30
65°
45°
1
63°
41°
2
64°
44°
3
66°
50°
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 63° to 82°, with overnight lows between 41° and 60°. The average high for September is 74° with an average low of 52°. 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.
