S
M
T
W
T
F
S
26
89°
63°
27
85°
66°
28
83°
63°
29
89°
62°
30
90°
69°
31
77°
62°
1
81°
58°
2
81°
57°
3
83°
58°
4
69°
51°
5
77°
48°
6
81°
56°
7
75°
58°
8
77°
52°
9
76°
55°
10
77°
52°
11
81°
54°
12
79°
57°
13
81°
56°
14
N/A
15
73°
61°
16
76°
52°
17
76°
57°
18
74°
52°
19
70°
49°
20
77°
53°
21
78°
55°
22
79°
60°
23
83°
56°
24
76°
53°
25
77°
53°
26
74°
52°
27
81°
53°
28
79°
56°
29
80°
58°
30
81°
58°
31
80°
57°
1
79°
55°
2
79°
56°
3
78°
57°
4
79°
57°
5
80°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Grand Rapids
Grand Rapids's August 2026 forecast shows daily high temperatures ranging from 70° to 83°, with overnight lows between 49° and 61°. The average high for August is 78° with an average low of 55°. 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.
