S
M
T
W
T
F
S
26
87°
72°
27
88°
72°
28
87°
71°
29
89°
73°
30
90°
74°
31
92°
74°
1
92°
74°
2
91°
73°
3
91°
74°
4
90°
74°
5
91°
73°
6
87°
74°
7
90°
73°
8
87°
72°
9
86°
69°
10
86°
70°
11
85°
71°
12
87°
70°
13
86°
72°
14
87°
73°
15
89°
72°
16
90°
73°
17
91°
73°
18
90°
72°
19
90°
73°
20
89°
73°
21
90°
72°
22
90°
73°
23
89°
72°
24
90°
72°
25
89°
71°
26
90°
72°
27
89°
71°
28
88°
68°
29
84°
69°
30
91°
71°
31
89°
70°
1
88°
71°
2
89°
70°
3
85°
70°
4
84°
68°
5
85°
68°
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 84° to 92°, with overnight lows between 68° and 74°. The average high for August is 89° with an average low of 72°. 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.
