S
M
T
W
T
F
S
26
82°
66°
27
84°
68°
28
80°
68°
29
80°
67°
30
81°
68°
31
84°
68°
1
85°
67°
2
84°
67°
3
86°
67°
4
86°
67°
5
81°
64°
6
82°
66°
7
81°
61°
8
80°
60°
9
80°
60°
10
81°
62°
11
84°
67°
12
87°
67°
13
87°
66°
14
86°
63°
15
81°
66°
16
80°
67°
17
80°
64°
18
81°
63°
19
82°
61°
20
79°
65°
21
82°
62°
22
82°
63°
23
83°
62°
24
84°
62°
25
85°
64°
26
84°
63°
27
85°
64°
28
84°
65°
29
84°
66°
30
83°
64°
31
82°
57°
1
78°
57°
2
77°
58°
3
78°
57°
4
80°
62°
5
82°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Cedar Grove
Cedar Grove's August 2026 forecast shows daily high temperatures ranging from 77° to 87°, with overnight lows between 57° and 68°. The average high for August is 82° 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 Cedar Grove. See also: September | October | November.