S
M
T
W
T
F
S
30
75°
57°
31
79°
58°
1
79°
57°
2
80°
49°
3
78°
47°
4
72°
54°
5
72°
56°
6
79°
48°
7
75°
46°
8
69°
46°
9
70°
50°
10
72°
54°
11
71°
55°
12
78°
53°
13
77°
48°
14
70°
45°
15
66°
44°
16
67°
48°
17
68°
44°
18
66°
43°
19
69°
40°
20
65°
41°
21
64°
49°
22
66°
47°
23
71°
42°
24
68°
49°
25
71°
50°
26
66°
50°
27
73°
46°
28
73°
41°
29
69°
43°
30
60°
46°
1
66°
44°
2
69°
47°
3
60°
36°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Clintonville
Clintonville's September 2026 forecast shows daily high temperatures ranging from 60° to 80°, with overnight lows between 36° and 58°. The average high for September is 71° with an average low of 48°. 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 Clintonville. See also: October | November | December.