S
M
T
W
T
F
S
26
82°
65°
27
78°
63°
28
77°
61°
29
78°
65°
30
83°
67°
31
85°
65°
1
79°
61°
2
82°
64°
3
84°
58°
4
78°
61°
5
78°
63°
6
79°
58°
7
78°
57°
8
79°
56°
9
78°
57°
10
78°
64°
11
80°
61°
12
79°
59°
13
82°
56°
14
77°
56°
15
79°
58°
16
79°
56°
17
76°
56°
18
77°
55°
19
77°
55°
20
79°
60°
21
80°
63°
22
81°
63°
23
84°
64°
24
84°
63°
25
85°
60°
26
81°
55°
27
78°
59°
28
81°
61°
29
82°
54°
30
77°
52°
31
76°
51°
1
74°
54°
2
73°
53°
3
75°
52°
4
74°
52°
5
73°
53°
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 73° to 85°, with overnight lows between 51° 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.
