S
M
T
W
T
F
S
26
94°
73°
27
96°
72°
28
95°
73°
29
96°
72°
30
95°
73°
31
95°
71°
1
93°
70°
2
89°
69°
3
87°
70°
4
86°
70°
5
86°
69°
6
89°
70°
7
90°
70°
8
90°
69°
9
91°
70°
10
92°
71°
11
90°
70°
12
89°
70°
13
91°
69°
14
94°
69°
15
94°
69°
16
92°
67°
17
93°
68°
18
90°
69°
19
92°
62°
20
86°
61°
21
84°
60°
22
83°
62°
23
85°
61°
24
86°
62°
25
85°
68°
26
89°
64°
27
92°
67°
28
92°
68°
29
93°
68°
30
93°
67°
31
92°
67°
1
88°
64°
2
87°
59°
3
82°
58°
4
82°
62°
5
85°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Union
Union's August 2026 forecast shows daily high temperatures ranging from 82° to 96°, with overnight lows between 58° and 73°. The average high for August is 90° 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. See also: September | October | November.
