S
M
T
W
T
F
S
31
79°
68°
1
86°
68°
2
82°
59°
3
82°
54°
4
86°
68°
5
88°
68°
6
88°
69°
7
81°
71°
8
82°
69°
9
87°
68°
10
92°
72°
11
91°
70°
12
90°
68°
13
87°
66°
14
86°
66°
15
89°
65°
16
86°
62°
17
85°
64°
18
88°
68°
19
87°
68°
20
89°
69°
21
90°
68°
22
84°
68°
23
90°
70°
24
92°
71°
25
92°
70°
26
91°
70°
27
91°
69°
28
89°
70°
29
89°
70°
30
87°
69°
1
87°
69°
2
88°
70°
3
86°
69°
4
87°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Union
Union's June 2026 forecast shows daily high temperatures ranging from 81° to 92°, with overnight lows between 62° and 72°. The average high for June is 88° with an average low of 68°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how June weather will actually feel in Union. See also: July | August | September.