S
M
T
W
T
F
S
26
84°
65°
27
81°
65°
28
79°
63°
29
80°
57°
30
86°
55°
31
85°
58°
1
78°
69°
2
76°
55°
3
80°
56°
4
84°
57°
5
83°
64°
6
76°
61°
7
81°
63°
8
83°
65°
9
85°
64°
10
84°
61°
11
77°
60°
12
77°
59°
13
79°
60°
14
77°
59°
15
74°
55°
16
74°
61°
17
83°
64°
18
83°
63°
19
84°
63°
20
81°
62°
21
81°
62°
22
82°
63°
23
82°
63°
24
80°
62°
25
79°
63°
26
80°
62°
27
79°
61°
28
75°
60°
29
79°
61°
30
78°
60°
31
80°
61°
1
79°
59°
2
75°
56°
3
74°
57°
4
75°
58°
5
79°
59°
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 74° to 85°, with overnight lows between 55° and 65°. The average high for August is 79° with an average low of 61°. 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.
