S
M
T
W
T
F
S
31
75°
56°
1
72°
57°
2
78°
55°
3
80°
57°
4
78°
58°
5
77°
58°
6
78°
57°
7
80°
59°
8
75°
59°
9
77°
60°
10
80°
60°
11
80°
59°
12
81°
60°
13
79°
60°
14
77°
59°
15
76°
60°
16
77°
56°
17
77°
55°
18
78°
59°
19
78°
56°
20
77°
55°
21
79°
59°
22
80°
61°
23
79°
62°
24
80°
56°
25
80°
56°
26
82°
57°
27
84°
56°
28
83°
60°
29
87°
63°
30
87°
63°
1
86°
57°
2
85°
60°
3
86°
63°
4
87°
64°
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 72° to 87°, with overnight lows between 55° and 64°. The average high for June is 80° with an average low of 59°. 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.