S
M
T
W
T
F
S
30
100°
73°
31
102°
75°
1
101°
72°
2
100°
77°
3
100°
77°
4
100°
75°
5
100°
72°
6
100°
73°
7
97°
72°
8
102°
73°
9
99°
70°
10
81°
66°
11
86°
65°
12
90°
67°
13
91°
71°
14
95°
72°
15
92°
69°
16
85°
66°
17
82°
62°
18
81°
60°
19
77°
53°
20
76°
53°
21
76°
54°
22
79°
56°
23
79°
55°
24
78°
53°
25
84°
60°
26
84°
60°
27
83°
59°
28
83°
59°
29
81°
58°
30
80°
56°
1
80°
54°
2
81°
58°
3
81°
57°
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 76° to 95°, with overnight lows between 53° and 72°. The average high for September is 83° with an average low of 60°. 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.
