S
M
T
W
T
F
S
26
86°
71°
27
87°
63°
28
87°
65°
29
88°
67°
30
93°
65°
31
90°
69°
1
93°
65°
2
89°
65°
3
88°
66°
4
85°
63°
5
86°
64°
6
86°
63°
7
87°
64°
8
86°
66°
9
86°
65°
10
89°
68°
11
91°
70°
12
86°
70°
13
93°
69°
14
93°
61°
15
90°
62°
16
84°
67°
17
87°
68°
18
90°
64°
19
92°
64°
20
88°
67°
21
87°
65°
22
90°
65°
23
89°
66°
24
88°
67°
25
91°
66°
26
91°
65°
27
89°
66°
28
89°
66°
29
87°
65°
30
88°
66°
31
90°
65°
1
85°
65°
2
88°
64°
3
86°
58°
4
84°
57°
5
80°
57°
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 93°, with overnight lows between 57° and 71°. The average high for August is 88° 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.
