S
M
T
W
T
F
S
26
82°
69°
27
88°
70°
28
88°
70°
29
89°
69°
30
88°
69°
31
86°
68°
1
84°
68°
2
88°
69°
3
88°
70°
4
89°
70°
5
90°
69°
6
90°
70°
7
85°
62°
8
88°
65°
9
87°
62°
10
83°
60°
11
82°
60°
12
83°
61°
13
83°
62°
14
84°
63°
15
83°
65°
16
83°
66°
17
82°
62°
18
85°
64°
19
85°
65°
20
81°
66°
21
82°
65°
22
82°
62°
23
83°
60°
24
85°
65°
25
88°
65°
26
89°
64°
27
88°
61°
28
87°
60°
29
84°
63°
30
81°
64°
31
83°
59°
1
79°
57°
2
79°
57°
3
78°
56°
4
78°
55°
5
79°
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 78° to 90°, with overnight lows between 55° and 70°. The average high for August is 85° with an average low of 64°. 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.
