S
M
T
W
T
F
S
26
63°
33°
27
73°
33°
28
70°
51°
29
67°
53°
30
53°
39°
1
58°
30°
2
48°
35°
3
56°
35°
4
73°
43°
5
77°
49°
6
49°
43°
7
56°
33°
8
54°
35°
9
59°
34°
10
60°
36°
11
56°
29°
12
60°
28°
13
60°
44°
14
52°
43°
15
57°
40°
16
67°
52°
17
72°
42°
18
81°
57°
19
78°
58°
20
68°
42°
21
57°
37°
22
58°
43°
23
59°
44°
24
63°
47°
25
65°
50°
26
68°
53°
27
66°
45°
28
60°
43°
29
61°
49°
30
61°
49°
31
65°
46°
1
60°
42°
2
61°
42°
3
60°
42°
4
62°
43°
5
63°
51°
6
65°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Ohio
Ohio's May 2026 forecast shows daily high temperatures ranging from 52° to 81°, with overnight lows between 37° and 58°. The average high for May is 64° with an average low of 46°. 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 Ohio. See also: June | July | August.