S
M
T
W
T
F
S
26
88°
71°
27
88°
70°
28
87°
69°
29
87°
70°
30
86°
66°
31
81°
64°
1
81°
64°
2
82°
65°
3
82°
65°
4
83°
64°
5
82°
64°
6
84°
66°
7
86°
69°
8
85°
68°
9
81°
69°
10
84°
62°
11
83°
63°
12
84°
62°
13
85°
67°
14
84°
68°
15
87°
67°
16
87°
69°
17
88°
68°
18
87°
67°
19
86°
60°
20
82°
60°
21
80°
61°
22
80°
60°
23
81°
59°
24
80°
60°
25
82°
60°
26
84°
59°
27
83°
60°
28
81°
63°
29
81°
61°
30
79°
62°
31
83°
64°
1
85°
57°
2
83°
58°
3
78°
57°
4
79°
58°
5
78°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Union Beach
Union Beach's August 2026 forecast shows daily high temperatures ranging from 78° to 88°, with overnight lows between 57° and 71°. The average high for August is 83° 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 Union Beach. See also: September | October | November.