S
M
T
W
T
F
S
26
95°
68°
27
91°
70°
28
90°
70°
29
90°
70°
30
79°
72°
31
72°
61°
1
81°
61°
2
82°
61°
3
84°
63°
4
68°
54°
5
75°
48°
6
81°
55°
7
75°
57°
8
81°
54°
9
81°
64°
10
82°
61°
11
84°
68°
12
84°
66°
13
79°
64°
14
73°
64°
15
77°
63°
16
77°
57°
17
84°
57°
18
81°
59°
19
75°
57°
20
84°
59°
21
81°
61°
22
79°
57°
23
80°
52°
24
79°
64°
25
82°
61°
26
79°
59°
27
80°
54°
28
84°
55°
29
86°
66°
30
95°
68°
31
82°
63°
1
82°
61°
2
88°
61°
3
91°
68°
4
95°
63°
5
88°
68°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Madison
Madison's August 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for August is ° with an average low of °. 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 Madison. See also: September | October | November.