S
M
T
W
T
F
S
26
72°
50°
27
73°
52°
28
73°
57°
29
64°
50°
30
59°
41°
1
57°
39°
2
55°
36°
3
63°
34°
4
77°
52°
5
64°
50°
6
59°
42°
7
60°
44°
8
70°
54°
9
72°
55°
10
62°
40°
11
60°
41°
12
63°
50°
13
68°
47°
14
70°
51°
15
75°
53°
16
71°
54°
17
68°
52°
18
71°
53°
19
70°
54°
20
67°
50°
21
68°
49°
22
69°
52°
23
71°
53°
24
71°
55°
25
72°
52°
26
72°
52°
27
73°
53°
28
73°
52°
29
75°
58°
30
79°
60°
31
76°
61°
1
76°
59°
2
78°
58°
3
80°
62°
4
81°
63°
5
82°
63°
6
81°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Madison
Madison's May 2026 forecast shows daily high temperatures ranging from 59° to 82°, with overnight lows between 40° and 63°. The average high for May is 71° with an average low of 53°. 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 Madison. See also: June | July | August.