S
M
T
W
T
F
S
26
92°
74°
27
97°
75°
28
84°
60°
29
85°
56°
30
86°
59°
31
73°
62°
1
76°
62°
2
80°
59°
3
83°
55°
4
84°
62°
5
73°
62°
6
81°
59°
7
84°
68°
8
80°
61°
9
78°
59°
10
85°
64°
11
83°
69°
12
85°
65°
13
77°
66°
14
81°
65°
15
82°
65°
16
84°
61°
17
82°
59°
18
81°
60°
19
79°
58°
20
79°
53°
21
75°
63°
22
78°
58°
23
74°
53°
24
76°
50°
25
79°
53°
26
80°
65°
27
81°
58°
28
81°
55°
29
75°
59°
30
82°
67°
31
87°
68°
1
87°
69°
2
88°
71°
3
82°
70°
4
86°
69°
5
80°
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 ° 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.