S
M
T
W
T
F
S
26
84°
63°
27
79°
62°
28
78°
58°
29
78°
61°
30
82°
64°
31
83°
64°
1
83°
63°
2
80°
63°
3
86°
60°
4
82°
55°
5
79°
57°
6
80°
56°
7
79°
55°
8
77°
56°
9
77°
54°
10
78°
59°
11
80°
62°
12
84°
62°
13
83°
55°
14
79°
54°
15
78°
55°
16
80°
59°
17
78°
56°
18
77°
54°
19
78°
54°
20
79°
55°
21
81°
58°
22
83°
60°
23
84°
61°
24
83°
62°
25
84°
61°
26
85°
59°
27
83°
58°
28
82°
60°
29
83°
58°
30
79°
52°
31
76°
50°
1
74°
52°
2
74°
50°
3
75°
51°
4
75°
51°
5
72°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Grass Lake
Grass Lake's August 2026 forecast shows daily high temperatures ranging from 72° to 86°, with overnight lows between 50° and 64°. The average high for August is 80° with an average low of 57°. 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 Grass Lake. See also: September | October | November.
