S
M
T
W
T
F
S
26
46°
37°
27
46°
37°
28
50°
32°
29
55°
34°
30
52°
32°
1
52°
27°
2
66°
36°
3
68°
43°
4
57°
36°
5
48°
30°
6
54°
25°
7
63°
34°
8
72°
43°
9
59°
41°
10
63°
37°
11
75°
37°
12
72°
46°
13
75°
41°
14
79°
54°
15
82°
48°
16
77°
45°
17
75°
52°
18
52°
43°
19
54°
39°
20
63°
30°
21
66°
41°
22
59°
48°
23
72°
45°
24
86°
48°
25
88°
59°
26
91°
68°
27
91°
59°
28
88°
64°
29
77°
62°
30
75°
58°
31
76°
59°
1
87°
60°
2
80°
61°
3
81°
61°
4
80°
57°
5
79°
58°
6
83°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Lake Madison
Lake Madison's May 2026 forecast shows daily high temperatures ranging from 75° to 88°, with overnight lows between 57° and 64°. The average high for May is 81° with an average low of 60°. 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 Lake Madison. See also: June | July | August.
