S
M
T
W
T
F
S
26
86°
70°
27
84°
71°
28
85°
72°
29
84°
72°
30
86°
71°
31
88°
69°
1
90°
70°
2
90°
70°
3
87°
71°
4
87°
71°
5
85°
69°
6
89°
70°
7
88°
66°
8
87°
67°
9
86°
66°
10
90°
67°
11
91°
67°
12
91°
68°
13
90°
71°
14
91°
71°
15
90°
70°
16
90°
71°
17
88°
70°
18
88°
71°
19
90°
70°
20
88°
70°
21
90°
67°
22
85°
69°
23
86°
70°
24
85°
66°
25
87°
68°
26
88°
69°
27
89°
70°
28
88°
69°
29
89°
70°
30
89°
70°
31
88°
66°
1
85°
65°
2
83°
64°
3
86°
64°
4
88°
68°
5
88°
67°
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 64° and 72°. The average high for August is 88° with an average low of 69°. 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.
