S
M
T
W
T
F
S
26
83°
66°
27
85°
66°
28
83°
65°
29
84°
64°
30
82°
65°
31
77°
63°
1
78°
61°
2
78°
64°
3
79°
64°
4
79°
63°
5
83°
65°
6
85°
66°
7
86°
67°
8
86°
65°
9
85°
65°
10
85°
64°
11
84°
65°
12
85°
64°
13
85°
65°
14
77°
58°
15
76°
55°
16
76°
53°
17
79°
54°
18
78°
53°
19
79°
51°
20
75°
52°
21
74°
56°
22
75°
52°
23
76°
53°
24
79°
57°
25
77°
54°
26
83°
60°
27
82°
56°
28
83°
51°
29
74°
51°
30
72°
52°
31
72°
52°
1
73°
50°
2
73°
56°
3
77°
50°
4
77°
55°
5
74°
55°
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 72° to 86°, with overnight lows between 50° and 67°. The average high for August is 79° with an average low of 59°. 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.
