S
M
T
W
T
F
S
26
70°
49°
27
71°
46°
28
65°
45°
29
68°
44°
30
65°
41°
1
66°
47°
2
67°
44°
3
66°
43°
4
68°
46°
5
75°
51°
6
77°
53°
7
76°
53°
8
77°
54°
9
78°
55°
10
79°
55°
11
75°
49°
12
67°
49°
13
69°
52°
14
70°
51°
15
69°
51°
16
70°
52°
17
68°
52°
18
78°
51°
19
72°
49°
20
74°
49°
21
73°
48°
22
71°
47°
23
72°
49°
24
73°
50°
25
71°
51°
26
72°
54°
27
74°
52°
28
76°
56°
29
76°
61°
30
83°
56°
31
83°
52°
1
75°
57°
2
81°
58°
3
84°
53°
4
79°
58°
5
81°
54°
6
77°
53°
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 65° to 84°, with overnight lows between 41° and 61°. The average high for May is 73° 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 Madison. See also: June | July | August.