S
M
T
W
T
F
S
26
82°
68°
27
88°
68°
28
84°
70°
29
82°
63°
30
82°
59°
31
84°
61°
1
81°
68°
2
77°
64°
3
82°
61°
4
84°
61°
5
86°
63°
6
86°
64°
7
88°
70°
8
88°
72°
9
88°
68°
10
90°
72°
11
90°
66°
12
73°
63°
13
88°
68°
14
86°
70°
15
91°
72°
16
90°
70°
17
82°
69°
18
82°
64°
19
81°
63°
20
81°
64°
21
86°
63°
22
81°
63°
23
81°
59°
24
77°
55°
25
79°
55°
26
84°
65°
27
84°
62°
28
83°
60°
29
85°
63°
30
90°
69°
31
91°
67°
1
91°
68°
2
90°
68°
3
89°
67°
4
88°
66°
5
83°
62°
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 83° to 91°, with overnight lows between 60° and 69°. The average high for August is 87° with an average low of 65°. 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.
