S
M
T
W
T
F
S
31
72°
64°
1
82°
64°
2
72°
57°
3
79°
52°
4
82°
52°
5
86°
57°
6
86°
61°
7
86°
66°
8
88°
70°
9
88°
72°
10
88°
70°
11
93°
72°
12
95°
73°
13
95°
72°
14
91°
72°
15
88°
70°
16
75°
70°
17
86°
70°
18
88°
71°
19
89°
65°
20
89°
66°
21
91°
70°
22
88°
72°
23
86°
68°
24
85°
69°
25
87°
70°
26
86°
69°
27
88°
69°
28
91°
70°
29
91°
71°
30
90°
70°
1
89°
69°
2
89°
70°
3
91°
72°
4
92°
72°
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 85° to 92°, with overnight lows between 65° and 72°. The average high for June is 89° with an average low of 70°. 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.