S
M
T
W
T
F
S
26
69°
43°
27
67°
51°
28
62°
46°
29
52°
35°
30
53°
30°
1
50°
29°
2
58°
43°
3
66°
42°
4
70°
40°
5
53°
35°
6
49°
32°
7
52°
35°
8
61°
40°
9
60°
41°
10
61°
44°
11
63°
42°
12
64°
42°
13
65°
45°
14
69°
44°
15
62°
42°
16
63°
41°
17
63°
49°
18
65°
51°
19
70°
50°
20
71°
52°
21
73°
49°
22
64°
47°
23
65°
43°
24
64°
44°
25
64°
46°
26
66°
53°
27
68°
51°
28
67°
47°
29
66°
47°
30
73°
48°
31
68°
46°
1
67°
51°
2
74°
48°
3
68°
48°
4
70°
47°
5
70°
47°
6
71°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Wisconsin Dells
Wisconsin Dells's May 2026 forecast shows daily high temperatures ranging from 49° to 74°, with overnight lows between 29° and 53°. The average high for May is 65° 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 Wisconsin Dells. See also: June | July | August.
