S
M
T
W
T
F
S
30
95°
65°
31
97°
70°
1
97°
72°
2
99°
70°
3
99°
72°
4
100°
74°
5
101°
73°
6
95°
67°
7
94°
68°
8
95°
74°
9
96°
70°
10
98°
67°
11
92°
65°
12
91°
64°
13
87°
60°
14
88°
59°
15
86°
60°
16
87°
61°
17
80°
57°
18
82°
62°
19
77°
62°
20
80°
61°
21
84°
62°
22
85°
61°
23
84°
59°
24
82°
60°
25
83°
61°
26
79°
56°
27
73°
51°
28
72°
48°
29
71°
47°
30
72°
51°
1
73°
53°
2
73°
56°
3
70°
55°
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 70° to 101°, with overnight lows between 47° and 74°. The average high for September is 84° with an average low of 61°. 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.
