S
M
T
W
T
F
S
26
82°
61°
27
82°
66°
28
86°
68°
29
84°
66°
30
82°
66°
31
84°
64°
1
88°
66°
2
88°
73°
3
86°
75°
4
86°
72°
5
86°
73°
6
90°
77°
7
90°
75°
8
91°
73°
9
91°
73°
10
91°
70°
11
86°
71°
12
86°
73°
13
86°
73°
14
82°
73°
15
86°
72°
16
81°
72°
17
90°
73°
18
86°
73°
19
88°
68°
20
90°
68°
21
81°
66°
22
75°
70°
23
82°
66°
24
82°
61°
25
81°
61°
26
84°
63°
27
86°
70°
28
88°
69°
29
80°
69°
30
84°
72°
31
88°
75°
1
88°
74°
2
94°
75°
3
94°
71°
4
87°
70°
5
81°
63°
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 80° to 94°, with overnight lows between 63° and 75°. The average high for August is 87° with an average low of 71°. 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.
