S
M
T
W
T
F
S
30
90°
66°
31
90°
67°
1
88°
66°
2
87°
65°
3
89°
64°
4
90°
67°
5
90°
68°
6
89°
63°
7
84°
60°
8
82°
60°
9
82°
61°
10
85°
59°
11
86°
59°
12
86°
61°
13
83°
60°
14
86°
64°
15
87°
63°
16
86°
60°
17
80°
56°
18
79°
56°
19
77°
57°
20
77°
57°
21
78°
55°
22
77°
57°
23
77°
60°
24
76°
60°
25
77°
61°
26
82°
60°
27
80°
59°
28
82°
60°
29
81°
58°
30
76°
59°
1
75°
57°
2
77°
51°
3
74°
50°
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 74° to 90°, with overnight lows between 50° and 68°. The average high for September is 82° 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 Cleveland. See also: October | November | December.
