S
M
T
W
T
F
S
30
89°
66°
31
88°
63°
1
87°
62°
2
86°
62°
3
87°
61°
4
87°
62°
5
87°
62°
6
Hist. Avg.
82°
56°
7
Hist. Avg.
82°
56°
8
Hist. Avg.
82°
56°
9
Hist. Avg.
81°
55°
10
Hist. Avg.
81°
55°
11
Hist. Avg.
81°
54°
12
Hist. Avg.
81°
54°
13
Hist. Avg.
80°
54°
14
Hist. Avg.
80°
53°
15
Hist. Avg.
80°
53°
16
Hist. Avg.
79°
53°
17
Hist. Avg.
79°
52°
18
Hist. Avg.
79°
52°
19
Hist. Avg.
78°
52°
20
Hist. Avg.
78°
51°
21
Hist. Avg.
78°
51°
22
Hist. Avg.
77°
50°
23
Hist. Avg.
77°
50°
24
Hist. Avg.
77°
50°
25
Hist. Avg.
76°
49°
26
Hist. Avg.
76°
49°
27
Hist. Avg.
75°
48°
28
Hist. Avg.
75°
48°
29
Hist. Avg.
75°
48°
30
Hist. Avg.
74°
47°
1
Hist. Avg.
74°
47°
2
Hist. Avg.
73°
46°
3
Hist. Avg.
73°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Clinton
Clinton's September 2026 forecast shows daily high temperatures ranging from 86° to 89°, with overnight lows between 61° and 66°. The average high for September is 87° with an average low of 63°. 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.