S
M
T
W
T
F
S
26
83°
60°
27
81°
59°
28
79°
60°
29
83°
61°
30
83°
60°
31
80°
58°
1
75°
58°
2
82°
59°
3
73°
50°
4
75°
58°
5
78°
57°
6
76°
55°
7
80°
52°
8
79°
53°
9
80°
59°
10
82°
57°
11
80°
55°
12
76°
50°
13
73°
49°
14
74°
53°
15
79°
56°
16
74°
54°
17
72°
49°
18
74°
52°
19
76°
57°
20
79°
57°
21
81°
58°
22
78°
59°
23
81°
57°
24
81°
50°
25
80°
50°
26
79°
48°
27
71°
55°
28
77°
50°
29
73°
47°
30
71°
44°
31
69°
50°
1
70°
44°
2
71°
45°
3
71°
45°
4
68°
44°
5
68°
44°
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 68° to 83°, with overnight lows between 44° and 61°. The average high for August is 77° with an average low of 53°. 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.
