S
M
T
W
T
F
S
26
80°
54°
27
73°
59°
28
68°
58°
29
64°
51°
30
63°
41°
1
60°
44°
2
57°
40°
3
69°
38°
4
76°
55°
5
68°
45°
6
60°
45°
7
65°
39°
8
74°
47°
9
77°
50°
10
71°
56°
11
74°
46°
12
80°
51°
13
72°
54°
14
70°
47°
15
81°
53°
16
84°
64°
17
86°
65°
18
82°
66°
19
86°
66°
20
67°
58°
21
66°
56°
22
67°
60°
23
77°
62°
24
77°
63°
25
79°
65°
26
77°
66°
27
78°
65°
28
82°
63°
29
80°
64°
30
78°
60°
31
79°
61°
1
79°
64°
2
82°
65°
3
83°
62°
4
88°
71°
5
83°
65°
6
84°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Cincinnati
Cincinnati's May 2026 forecast shows daily high temperatures ranging from 67° to 88°, with overnight lows between 60° and 71°. The average high for May is 80° with an average low of 64°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Cincinnati. See also: June | July | August.
