S
M
T
W
T
F
S
26
87°
64°
27
87°
64°
28
87°
68°
29
87°
66°
30
87°
64°
31
90°
62°
1
85°
62°
2
83°
71°
3
88°
72°
4
82°
68°
5
85°
71°
6
90°
70°
7
88°
69°
8
89°
69°
9
90°
70°
10
91°
64°
11
88°
68°
12
84°
66°
13
90°
68°
14
85°
71°
15
83°
70°
16
84°
70°
17
89°
71°
18
83°
70°
19
87°
66°
20
89°
68°
21
78°
63°
22
82°
63°
23
82°
62°
24
82°
55°
25
80°
55°
26
83°
57°
27
85°
65°
28
86°
66°
29
83°
67°
30
88°
66°
31
89°
67°
1
93°
68°
2
95°
71°
3
90°
69°
4
97°
69°
5
80°
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 ° to °, with overnight lows between ° and °. The average high for August is ° with an average low of °. 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.