S
M
T
W
T
F
S
26
86°
67°
27
86°
66°
28
87°
69°
29
88°
69°
30
87°
68°
31
86°
69°
1
87°
69°
2
88°
70°
3
88°
68°
4
86°
67°
5
86°
68°
6
88°
68°
7
86°
67°
8
81°
63°
9
81°
63°
10
82°
67°
11
87°
69°
12
87°
69°
13
88°
68°
14
87°
68°
15
86°
66°
16
85°
65°
17
81°
65°
18
85°
65°
19
86°
64°
20
85°
65°
21
86°
64°
22
85°
59°
23
78°
57°
24
77°
56°
25
78°
56°
26
78°
57°
27
80°
55°
28
79°
58°
29
80°
62°
30
78°
63°
31
82°
62°
1
85°
62°
2
85°
61°
3
84°
54°
4
76°
60°
5
77°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Long Grove
Long Grove's August 2026 forecast shows daily high temperatures ranging from 76° to 88°, with overnight lows between 54° and 70°. The average high for August is 84° with an average low of 64°. 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 Long Grove. See also: September | October | November.
