S
M
T
W
T
F
S
26
63°
46°
27
81°
52°
28
82°
34°
29
60°
45°
30
64°
43°
1
48°
37°
2
73°
32°
3
61°
34°
4
71°
57°
5
64°
44°
6
55°
40°
7
54°
39°
8
58°
44°
9
62°
47°
10
64°
48°
11
61°
46°
12
63°
48°
13
64°
52°
14
65°
47°
15
66°
51°
16
70°
53°
17
73°
51°
18
72°
57°
19
73°
55°
20
76°
51°
21
72°
51°
22
67°
47°
23
65°
47°
24
67°
49°
25
67°
51°
26
66°
49°
27
67°
50°
28
68°
50°
29
69°
51°
30
70°
54°
31
76°
58°
1
70°
54°
2
72°
53°
3
73°
58°
4
75°
58°
5
77°
61°
6
80°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Bellefontaine
Bellefontaine's May 2026 forecast shows daily high temperatures ranging from 54° to 80°, with overnight lows between 39° and 62°. The average high for May is 68° with an average low of 51°. 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 Bellefontaine. See also: June | July | August.
