S
M
T
W
T
F
S
26
74°
54°
27
76°
57°
28
59°
47°
29
60°
43°
30
66°
40°
1
65°
39°
2
63°
40°
3
81°
49°
4
81°
57°
5
59°
46°
6
60°
45°
7
68°
43°
8
67°
54°
9
83°
53°
10
68°
53°
11
78°
48°
12
80°
58°
13
77°
51°
14
78°
58°
15
85°
64°
16
87°
65°
17
84°
70°
18
79°
62°
19
65°
53°
20
64°
49°
21
66°
55°
22
68°
58°
23
78°
56°
24
83°
60°
25
86°
64°
26
84°
65°
27
79°
66°
28
78°
63°
29
77°
61°
30
77°
58°
31
76°
57°
1
75°
59°
2
78°
58°
3
79°
61°
4
79°
60°
5
78°
61°
6
78°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Lake Winnebago
Lake Winnebago's May 2026 forecast shows daily high temperatures ranging from 75° to 86°, with overnight lows between 56° and 66°. The average high for May is 79° with an average low of 61°. 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 Winnebago. See also: June | July | August.
