S
M
T
W
T
F
S
26
87°
73°
27
88°
73°
28
89°
74°
29
88°
74°
30
89°
75°
31
87°
74°
1
88°
74°
2
88°
73°
3
89°
74°
4
90°
74°
5
89°
73°
6
90°
75°
7
91°
75°
8
91°
74°
9
86°
73°
10
90°
72°
11
90°
72°
12
90°
74°
13
91°
73°
14
89°
72°
15
90°
73°
16
89°
72°
17
90°
71°
18
91°
71°
19
92°
72°
20
92°
71°
21
91°
71°
22
91°
72°
23
89°
72°
24
89°
73°
25
90°
72°
26
89°
71°
27
89°
71°
28
88°
72°
29
89°
71°
30
90°
69°
31
93°
71°
1
92°
73°
2
91°
72°
3
90°
72°
4
88°
71°
5
89°
71°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Wiscon
Wiscon's August 2026 forecast shows daily high temperatures ranging from 86° to 93°, with overnight lows between 69° and 75°. The average high for August is 90° with an average low of 73°. 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 Wiscon. See also: September | October | November.