S
M
T
W
T
F
S
30
80°
51°
31
80°
51°
1
79°
50°
2
79°
50°
3
76°
49°
4
72°
50°
5
71°
50°
6
71°
49°
7
75°
49°
8
70°
48°
9
70°
49°
10
69°
47°
11
72°
48°
12
74°
48°
13
72°
47°
14
77°
47°
15
75°
46°
16
74°
46°
17
77°
45°
18
73°
46°
19
68°
44°
20
68°
43°
21
71°
41°
22
71°
40°
23
72°
38°
24
67°
39°
25
68°
39°
26
69°
40°
27
71°
39°
28
66°
42°
29
70°
40°
30
72°
39°
1
73°
42°
2
73°
41°
3
72°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Cleveland
Cleveland's September 2026 forecast shows daily high temperatures ranging from 66° to 80°, with overnight lows between 38° and 51°. The average high for September is 72° with an average low of 45°. 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 Cleveland. See also: October | November | December.
