S
M
T
W
T
F
S
26
82°
60°
27
80°
56°
28
81°
56°
29
81°
57°
30
82°
52°
31
77°
51°
1
78°
57°
2
81°
56°
3
82°
56°
4
81°
54°
5
80°
51°
6
78°
55°
7
80°
59°
8
81°
58°
9
82°
54°
10
82°
51°
11
80°
49°
12
75°
50°
13
76°
49°
14
76°
48°
15
75°
50°
16
78°
57°
17
80°
59°
18
79°
60°
19
80°
58°
20
81°
59°
21
80°
58°
22
74°
54°
23
75°
57°
24
78°
55°
25
70°
52°
26
69°
52°
27
69°
49°
28
68°
48°
29
69°
47°
30
70°
47°
31
70°
50°
1
69°
56°
2
68°
56°
3
68°
55°
4
67°
54°
5
67°
51°
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 67° to 82°, with overnight lows between 47° and 60°. The average high for August is 76° with an average low of 54°. 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.
