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
83°
60°
4
82°
65°
5
76°
59°
6
80°
56°
7
81°
60°
8
83°
63°
9
85°
66°
10
83°
67°
11
82°
63°
12
80°
61°
13
79°
62°
14
78°
60°
15
77°
62°
16
80°
59°
17
84°
64°
18
83°
65°
19
85°
64°
20
81°
63°
21
82°
63°
22
84°
64°
23
83°
64°
24
81°
63°
25
81°
63°
26
82°
62°
27
79°
60°
28
77°
62°
29
80°
61°
30
81°
62°
31
82°
62°
1
81°
61°
2
77°
61°
3
80°
60°
4
79°
60°
5
80°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Waukesha
Waukesha's August 2026 forecast shows daily high temperatures ranging from 76° to 85°, with overnight lows between 56° and 67°. The average high for August is 81° with an average low of 62°. 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 Waukesha. See also: September | October | November.
