S
M
T
W
T
F
S
26
81°
62°
27
83°
67°
28
78°
69°
29
80°
67°
30
78°
60°
31
82°
61°
1
83°
65°
2
75°
64°
3
75°
61°
4
82°
65°
5
80°
64°
6
79°
64°
7
80°
64°
8
79°
61°
9
80°
60°
10
78°
59°
11
77°
57°
12
74°
58°
13
75°
58°
14
74°
57°
15
73°
55°
16
73°
55°
17
81°
61°
18
78°
60°
19
81°
61°
20
76°
60°
21
74°
57°
22
77°
61°
23
81°
62°
24
79°
62°
25
76°
61°
26
78°
61°
27
79°
60°
28
79°
60°
29
77°
59°
30
76°
60°
31
77°
59°
1
78°
58°
2
71°
55°
3
70°
54°
4
71°
55°
5
73°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Union City
Union City's August 2026 forecast shows daily high temperatures ranging from 70° to 83°, with overnight lows between 54° and 65°. The average high for August is 77° 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 City. See also: September | October | November.
