S
M
T
W
T
F
S
26
81°
57°
27
84°
62°
28
77°
67°
29
77°
65°
30
78°
56°
31
85°
55°
1
81°
67°
2
83°
67°
3
74°
56°
4
83°
49°
5
86°
59°
6
84°
69°
7
80°
67°
8
86°
68°
9
82°
61°
10
82°
66°
11
78°
67°
12
78°
66°
13
80°
65°
14
84°
60°
15
81°
70°
16
81°
69°
17
78°
62°
18
79°
62°
19
78°
63°
20
71°
59°
21
73°
60°
22
75°
61°
23
76°
62°
24
76°
61°
25
75°
60°
26
75°
62°
27
74°
61°
28
73°
58°
29
73°
61°
30
76°
65°
31
79°
64°
1
81°
65°
2
81°
65°
3
80°
64°
4
79°
64°
5
77°
63°
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 71° to 84°, with overnight lows between 58° and 70°. The average high for August is 77° with an average low of 63°. 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.
