S
M
T
W
T
F
S
26
89°
70°
27
85°
72°
28
78°
62°
29
82°
55°
30
86°
61°
31
75°
61°
1
77°
63°
2
77°
59°
3
81°
60°
4
82°
65°
5
75°
58°
6
80°
58°
7
83°
61°
8
81°
66°
9
81°
65°
10
81°
68°
11
80°
63°
12
79°
64°
13
77°
63°
14
75°
60°
15
79°
62°
16
78°
60°
17
81°
64°
18
81°
65°
19
82°
64°
20
80°
64°
21
80°
63°
22
81°
65°
23
80°
64°
24
80°
64°
25
78°
63°
26
80°
62°
27
77°
62°
28
77°
63°
29
79°
62°
30
80°
63°
31
80°
62°
1
79°
61°
2
74°
61°
3
78°
62°
4
79°
61°
5
79°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Fond du Lac
Fond du Lac's August 2026 forecast shows daily high temperatures ranging from 74° to 83°, with overnight lows between 58° and 68°. The average high for August is 79° with an average low of 63°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Fond du Lac. See also: September | October | November.
