S
M
T
W
T
F
S
26
91°
70°
27
84°
72°
28
81°
63°
29
81°
56°
30
88°
59°
31
77°
64°
1
70°
64°
2
77°
63°
3
81°
56°
4
84°
64°
5
79°
67°
6
80°
65°
7
85°
67°
8
82°
64°
9
75°
60°
10
84°
69°
11
81°
69°
12
83°
68°
13
78°
66°
14
80°
69°
15
83°
69°
16
86°
68°
17
81°
65°
18
82°
62°
19
76°
59°
20
81°
55°
21
71°
60°
22
78°
60°
23
75°
57°
24
76°
52°
25
80°
54°
26
83°
66°
27
81°
61°
28
83°
58°
29
76°
62°
30
84°
68°
31
87°
69°
1
88°
73°
2
89°
72°
3
79°
69°
4
88°
68°
5
77°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Pewaukee
Pewaukee'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 Pewaukee. See also: September | October | November.