S
M
T
W
T
F
S
26
56°
36°
27
53°
36°
28
60°
38°
29
63°
37°
30
63°
40°
1
63°
39°
2
58°
39°
3
64°
40°
4
62°
40°
5
63°
46°
6
60°
47°
7
70°
44°
8
67°
46°
9
66°
42°
10
62°
38°
11
60°
38°
12
60°
39°
13
62°
39°
14
63°
46°
15
63°
44°
16
66°
50°
17
68°
42°
18
63°
41°
19
64°
44°
20
65°
50°
21
66°
52°
22
72°
53°
23
71°
46°
24
64°
43°
25
69°
53°
26
75°
52°
27
71°
47°
28
67°
46°
29
76°
51°
30
71°
51°
31
77°
54°
1
78°
53°
2
81°
56°
3
80°
55°
4
79°
56°
5
80°
56°
6
80°
57°
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 53° to 81°, with overnight lows between 36° and 57°. The average high for May is 67° with an average low of 46°. 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.
