S
M
T
W
T
F
S
26
85°
70°
27
85°
70°
28
86°
69°
29
85°
70°
30
85°
70°
31
86°
69°
1
86°
68°
2
85°
71°
3
87°
70°
4
86°
70°
5
87°
69°
6
89°
71°
7
89°
71°
8
90°
70°
9
89°
69°
10
86°
66°
11
90°
69°
12
91°
70°
13
87°
68°
14
86°
69°
15
91°
70°
16
90°
69°
17
90°
69°
18
88°
64°
19
88°
63°
20
84°
63°
21
84°
64°
22
85°
63°
23
85°
63°
24
86°
64°
25
84°
63°
26
85°
62°
27
85°
62°
28
86°
63°
29
86°
62°
30
85°
62°
31
88°
66°
1
89°
66°
2
87°
65°
3
87°
66°
4
86°
61°
5
86°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Union Grove
Union Grove's August 2026 forecast shows daily high temperatures ranging from 84° to 91°, with overnight lows between 61° and 71°. The average high for August is 87° with an average low of 67°. 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 Union Grove. See also: September | October | November.
