S
M
T
W
T
F
S
26
59°
46°
27
74°
43°
28
63°
48°
29
60°
45°
30
56°
42°
1
50°
37°
2
47°
32°
3
60°
35°
4
74°
55°
5
61°
44°
6
59°
40°
7
56°
39°
8
64°
44°
9
62°
45°
10
66°
46°
11
62°
44°
12
63°
45°
13
65°
50°
14
64°
46°
15
66°
47°
16
70°
49°
17
73°
50°
18
70°
54°
19
71°
53°
20
73°
52°
21
72°
50°
22
66°
46°
23
65°
46°
24
66°
47°
25
66°
49°
26
67°
48°
27
67°
48°
28
68°
49°
29
68°
49°
30
69°
54°
31
74°
55°
1
70°
51°
2
72°
53°
3
74°
59°
4
76°
58°
5
77°
60°
6
80°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Ottoville
Ottoville's May 2026 forecast shows daily high temperatures ranging from 56° to 80°, with overnight lows between 39° and 61°. The average high for May is 68° with an average low of 50°. 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 Ottoville. See also: June | July | August.