S
M
T
W
T
F
S
26
81°
58°
27
83°
63°
28
80°
72°
29
79°
68°
30
77°
66°
31
83°
64°
1
83°
72°
2
82°
74°
3
80°
68°
4
83°
63°
5
83°
63°
6
87°
76°
7
91°
73°
8
88°
72°
9
90°
74°
10
84°
70°
11
87°
71°
12
85°
72°
13
85°
71°
14
85°
67°
15
82°
66°
16
81°
65°
17
78°
68°
18
85°
69°
19
84°
69°
20
84°
65°
21
72°
64°
22
73°
66°
23
82°
68°
24
N/A
25
79°
61°
26
79°
65°
27
80°
70°
28
81°
65°
29
81°
65°
30
78°
68°
31
78°
67°
1
76°
65°
2
77°
66°
3
75°
65°
4
77°
63°
5
78°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Lake Grove
Lake Grove's August 2026 forecast shows daily high temperatures ranging from 75° to 81°, with overnight lows between 61° and 70°. The average high for August is 78° with an average low of 65°. 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 Lake Grove. See also: September | October | November.