S
M
T
W
T
F
S
26
88°
72°
27
80°
69°
28
83°
64°
29
84°
59°
30
87°
62°
31
83°
61°
1
71°
67°
2
81°
64°
3
83°
60°
4
86°
59°
5
78°
68°
6
79°
68°
7
88°
66°
8
84°
63°
9
80°
56°
10
85°
66°
11
80°
64°
12
82°
66°
13
79°
66°
14
82°
65°
15
77°
68°
16
84°
62°
17
81°
63°
18
80°
62°
19
79°
55°
20
81°
59°
21
80°
58°
22
79°
57°
23
78°
54°
24
79°
55°
25
80°
55°
26
83°
58°
27
83°
60°
28
82°
61°
29
81°
56°
30
78°
60°
31
73°
54°
1
71°
58°
2
72°
59°
3
72°
57°
4
73°
55°
5
72°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Grand Rapids
Grand Rapids's August 2026 forecast shows daily high temperatures ranging from 71° to 84°, with overnight lows between 53° and 63°. The average high for August is 78° with an average low of 58°. 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 Grand Rapids. See also: September | October | November.
