S
M
T
W
T
F
S
26
92°
74°
27
91°
74°
28
93°
73°
29
93°
75°
30
94°
75°
31
93°
74°
1
93°
75°
2
94°
76°
3
95°
75°
4
94°
74°
5
94°
74°
6
93°
75°
7
95°
75°
8
94°
74°
9
93°
75°
10
89°
71°
11
89°
72°
12
91°
73°
13
92°
71°
14
94°
72°
15
93°
73°
16
93°
72°
17
92°
72°
18
93°
66°
19
89°
64°
20
86°
65°
21
86°
65°
22
87°
66°
23
87°
65°
24
88°
65°
25
87°
66°
26
87°
64°
27
88°
65°
28
87°
64°
29
87°
63°
30
86°
63°
31
87°
64°
1
90°
66°
2
91°
67°
3
85°
68°
4
89°
67°
5
90°
67°
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 85° to 95°, with overnight lows between 63° and 76°. The average high for August is 91° with an average low of 70°. 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.
