S
M
T
W
T
F
S
26
62°
41°
27
59°
45°
28
62°
46°
29
52°
36°
30
49°
32°
1
45°
29°
2
59°
28°
3
68°
48°
4
77°
44°
5
56°
33°
6
54°
32°
7
56°
32°
8
67°
31°
9
63°
40°
10
60°
30°
11
55°
33°
12
75°
35°
13
60°
39°
14
68°
33°
15
78°
59°
16
84°
51°
17
69°
65°
18
78°
63°
19
70°
43°
20
58°
43°
21
62°
44°
22
67°
51°
23
72°
54°
24
72°
54°
25
71°
56°
26
72°
55°
27
73°
56°
28
69°
50°
29
65°
52°
30
64°
52°
31
65°
49°
1
65°
47°
2
66°
47°
3
66°
51°
4
68°
58°
5
76°
60°
6
76°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Fond du Lac
Fond du Lac's May 2026 forecast shows daily high temperatures ranging from 58° to 84°, with overnight lows between 43° and 65°. The average high for May is 70° with an average low of 53°. 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 Fond du Lac. See also: June | July | August.
