S
M
T
W
T
F
S
26
85°
67°
27
88°
70°
28
88°
70°
29
90°
69°
30
88°
70°
31
87°
70°
1
87°
69°
2
85°
68°
3
85°
69°
4
86°
69°
5
86°
68°
6
85°
69°
7
85°
69°
8
86°
68°
9
86°
69°
10
84°
69°
11
84°
68°
12
85°
69°
13
83°
68°
14
83°
68°
15
84°
67°
16
84°
67°
17
83°
66°
18
83°
66°
19
84°
65°
20
85°
68°
21
88°
62°
22
83°
60°
23
83°
60°
24
82°
61°
25
83°
64°
26
85°
66°
27
88°
66°
28
89°
65°
29
88°
66°
30
88°
61°
31
86°
59°
1
81°
62°
2
82°
65°
3
86°
60°
4
86°
65°
5
87°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Oak Grove
Oak Grove's August 2026 forecast shows daily high temperatures ranging from 81° to 90°, with overnight lows between 59° and 70°. The average high for August is 85° with an average low of 66°. 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 Oak Grove. See also: September | October | November.