S
M
T
W
T
F
S
26
85°
64°
27
86°
66°
28
88°
63°
29
85°
65°
30
82°
69°
31
88°
64°
1
88°
63°
2
84°
69°
3
86°
65°
4
89°
63°
5
82°
68°
6
81°
62°
7
82°
61°
8
80°
62°
9
81°
62°
10
83°
63°
11
83°
62°
12
81°
64°
13
81°
64°
14
82°
62°
15
81°
68°
16
86°
67°
17
86°
66°
18
85°
60°
19
82°
60°
20
80°
61°
21
83°
66°
22
83°
65°
23
86°
66°
24
87°
67°
25
86°
66°
26
86°
65°
27
84°
60°
28
82°
60°
29
78°
59°
30
Hist. Avg.
81°
60°
31
Hist. Avg.
81°
59°
1
Hist. Avg.
81°
59°
2
Hist. Avg.
80°
59°
3
Hist. Avg.
80°
59°
4
Hist. Avg.
80°
58°
5
Hist. Avg.
80°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Union
Union's August 2026 forecast shows daily high temperatures ranging from 78° to 89°, with overnight lows between 59° and 69°. The average high for August is 84° 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. See also: September | October | November.
