S
M
T
W
T
F
S
26
84°
67°
27
84°
67°
28
83°
68°
29
84°
66°
30
80°
67°
31
82°
65°
1
77°
63°
2
76°
62°
3
77°
64°
4
80°
66°
5
81°
65°
6
83°
66°
7
83°
66°
8
84°
67°
9
83°
67°
10
83°
66°
11
82°
66°
12
84°
67°
13
84°
67°
14
86°
61°
15
84°
63°
16
77°
65°
17
81°
61°
18
83°
63°
19
84°
57°
20
79°
55°
21
75°
55°
22
75°
57°
23
76°
57°
24
76°
55°
25
75°
62°
26
75°
60°
27
80°
56°
28
80°
56°
29
75°
55°
30
72°
55°
31
74°
54°
1
73°
54°
2
72°
55°
3
74°
55°
4
75°
53°
5
75°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Muskegon
Muskegon's August 2026 forecast shows daily high temperatures ranging from 72° to 86°, with overnight lows between 53° and 68°. The average high for August is 79° with an average low of 61°. 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 Muskegon. See also: September | October | November.