S
M
T
W
T
F
S
26
83°
60°
27
83°
62°
28
82°
62°
29
79°
61°
30
77°
62°
31
83°
62°
1
82°
61°
2
83°
60°
3
85°
61°
4
85°
61°
5
84°
60°
6
83°
59°
7
80°
61°
8
82°
59°
9
78°
57°
10
81°
55°
11
77°
59°
12
81°
60°
13
83°
59°
14
82°
53°
15
77°
52°
16
76°
52°
17
77°
56°
18
75°
53°
19
78°
51°
20
77°
52°
21
77°
52°
22
79°
57°
23
81°
57°
24
81°
53°
25
79°
51°
26
80°
57°
27
79°
54°
28
74°
55°
29
79°
58°
30
80°
54°
31
79°
48°
1
74°
47°
2
72°
49°
3
72°
48°
4
73°
48°
5
71°
47°
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 71° to 85°, with overnight lows between 47° and 62°. The average high for August is 79° with an average low of 56°. 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.
