S
M
T
W
T
F
S
26
84°
65°
27
83°
65°
28
78°
64°
29
80°
57°
30
85°
56°
31
85°
58°
1
74°
68°
2
78°
64°
3
81°
55°
4
84°
53°
5
85°
66°
6
78°
65°
7
83°
65°
8
84°
62°
9
83°
66°
10
82°
64°
11
83°
60°
12
79°
58°
13
80°
59°
14
81°
58°
15
79°
59°
16
81°
57°
17
80°
58°
18
80°
58°
19
86°
62°
20
83°
61°
21
83°
61°
22
84°
62°
23
83°
62°
24
82°
61°
25
80°
62°
26
80°
62°
27
81°
61°
28
78°
60°
29
80°
59°
30
79°
60°
31
82°
60°
1
81°
58°
2
76°
56°
3
75°
58°
4
75°
58°
5
81°
57°
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 75° to 86°, with overnight lows between 56° and 66°. The average high for August is 81° with an average low of 60°. 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.
