S
M
T
W
T
F
S
26
85°
67°
27
80°
60°
28
80°
63°
29
83°
65°
30
82°
61°
31
82°
66°
1
83°
60°
2
82°
58°
3
81°
59°
4
79°
57°
5
80°
58°
6
80°
59°
7
82°
58°
8
83°
60°
9
85°
63°
10
83°
64°
11
82°
65°
12
85°
65°
13
85°
66°
14
84°
64°
15
85°
57°
16
84°
58°
17
79°
59°
18
78°
61°
19
77°
57°
20
77°
56°
21
78°
58°
22
80°
58°
23
84°
62°
24
85°
63°
25
84°
56°
26
84°
55°
27
77°
55°
28
77°
56°
29
76°
61°
30
80°
63°
31
83°
62°
1
83°
55°
2
80°
55°
3
82°
60°
4
80°
61°
5
77°
60°
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 76° to 85°, with overnight lows between 55° and 67°. The average high for August is 81° with an average low of 60°. 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.
