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
60°
29°
3
71°
50°
4
78°
44°
5
55°
34°
6
51°
30°
7
58°
28°
8
69°
33°
9
64°
38°
10
62°
31°
11
61°
31°
12
77°
42°
13
65°
40°
14
72°
34°
15
82°
52°
16
83°
57°
17
65°
50°
18
79°
54°
19
67°
45°
20
62°
43°
21
56°
44°
22
62°
45°
23
72°
53°
24
78°
53°
25
83°
57°
26
88°
65°
27
87°
62°
28
77°
53°
29
82°
46°
30
76°
49°
31
80°
57°
1
77°
48°
2
81°
50°
3
83°
57°
4
83°
60°
5
78°
58°
6
79°
54°
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 76° to 83°, with overnight lows between 48° and 60°. The average high for May is 80° with an average low of 54°. 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.
