S
M
T
W
T
F
S
26
84°
70°
27
86°
64°
28
73°
59°
29
81°
59°
30
86°
63°
31
75°
64°
1
69°
63°
2
76°
58°
3
77°
55°
4
80°
61°
5
76°
63°
6
77°
57°
7
80°
60°
8
81°
60°
9
80°
59°
10
79°
60°
11
76°
57°
12
78°
58°
13
75°
56°
14
80°
59°
15
74°
55°
16
75°
62°
17
83°
63°
18
82°
64°
19
84°
63°
20
80°
62°
21
81°
62°
22
82°
63°
23
82°
62°
24
80°
62°
25
80°
61°
26
81°
61°
27
78°
58°
28
76°
61°
29
79°
59°
30
80°
60°
31
80°
60°
1
79°
59°
2
76°
60°
3
79°
60°
4
78°
59°
5
79°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Menomonee Falls
Menomonee Falls's August 2026 forecast shows daily high temperatures ranging from 69° to 84°, with overnight lows between 55° and 64°. The average high for August is 79° with an average low of 60°. 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 Menomonee Falls. See also: September | October | November.