S
M
T
W
T
F
S
26
68°
39°
27
70°
50°
28
63°
50°
29
52°
36°
30
53°
36°
1
51°
34°
2
55°
41°
3
64°
43°
4
74°
42°
5
54°
39°
6
49°
35°
7
47°
35°
8
54°
38°
9
60°
42°
10
59°
39°
11
60°
41°
12
63°
43°
13
66°
45°
14
63°
46°
15
59°
43°
16
60°
43°
17
61°
50°
18
65°
51°
19
63°
51°
20
67°
52°
21
68°
51°
22
63°
52°
23
68°
46°
24
61°
44°
25
62°
48°
26
64°
54°
27
66°
51°
28
64°
50°
29
64°
46°
30
68°
47°
31
65°
46°
1
65°
52°
2
74°
50°
3
65°
49°
4
67°
48°
5
67°
48°
6
68°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Beloit
Beloit's May 2026 forecast shows daily high temperatures ranging from 47° to 74°, with overnight lows between 34° and 54°. The average high for May is 62° with an average low of 45°. 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 Beloit. See also: June | July | August.
