S
M
T
W
T
F
S
30
89°
66°
31
89°
63°
1
87°
62°
2
82°
63°
3
85°
66°
4
86°
62°
5
84°
61°
6
85°
66°
7
86°
64°
8
85°
63°
9
86°
64°
10
80°
64°
11
85°
63°
12
83°
59°
13
78°
58°
14
79°
60°
15
80°
60°
16
83°
57°
17
82°
58°
18
81°
56°
19
78°
58°
20
77°
58°
21
76°
54°
22
77°
54°
23
81°
56°
24
80°
58°
25
81°
60°
26
80°
57°
27
80°
53°
28
75°
52°
29
79°
51°
30
74°
51°
1
Hist. Avg.
76°
55°
2
Hist. Avg.
76°
54°
3
Hist. Avg.
76°
54°
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 89°, with overnight lows between 51° and 66°. The average high for September is 82° with an average low of 59°. 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.
