S
M
T
W
T
F
S
26
89°
72°
27
93°
72°
28
93°
72°
29
91°
72°
30
92°
73°
31
93°
72°
1
92°
73°
2
93°
72°
3
91°
72°
4
91°
73°
5
90°
73°
6
92°
72°
7
90°
72°
8
89°
73°
9
90°
72°
10
90°
73°
11
91°
73°
12
89°
72°
13
90°
73°
14
91°
73°
15
94°
72°
16
93°
73°
17
92°
72°
18
88°
72°
19
89°
71°
20
88°
70°
21
91°
71°
22
92°
72°
23
89°
71°
24
89°
70°
25
91°
73°
26
92°
73°
27
91°
72°
28
89°
73°
29
90°
73°
30
90°
72°
31
91°
71°
1
91°
70°
2
88°
71°
3
88°
70°
4
87°
70°
5
90°
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 87° to 94°, with overnight lows between 68° and 73°. The average high for August is 91° with an average low of 72°. 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.
