S
M
T
W
T
F
S
30
91°
66°
31
89°
67°
1
89°
61°
2
85°
58°
3
80°
63°
4
86°
67°
5
87°
66°
6
88°
63°
7
87°
64°
8
86°
63°
9
84°
61°
10
83°
56°
11
77°
56°
12
77°
58°
13
80°
62°
14
82°
63°
15
81°
62°
16
80°
62°
17
79°
53°
18
81°
51°
19
73°
51°
20
72°
54°
21
74°
59°
22
77°
61°
23
81°
61°
24
80°
59°
25
81°
50°
26
80°
51°
27
71°
49°
28
70°
48°
29
70°
49°
30
70°
58°
1
68°
54°
2
69°
53°
3
Hist. Avg.
72°
49°
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 68° to 91°, with overnight lows between 48° and 67°. The average high for September is 80° with an average low of 58°. 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.
