S
M
T
W
T
F
S
31
69°
37°
1
66°
45°
2
76°
43°
3
86°
49°
4
89°
53°
5
87°
56°
6
75°
56°
7
78°
53°
8
81°
49°
9
86°
52°
10
91°
58°
11
90°
71°
12
90°
69°
13
86°
63°
14
90°
58°
15
79°
61°
16
77°
54°
17
80°
50°
18
73°
57°
19
78°
58°
20
75°
57°
21
74°
55°
22
75°
59°
23
76°
57°
24
80°
57°
25
78°
58°
26
70°
58°
27
78°
57°
28
79°
56°
29
78°
59°
30
80°
60°
1
79°
59°
2
81°
59°
3
80°
58°
4
79°
57°
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 70° to 81°, with overnight lows between 55° and 60°. The average high for June is 78° with an average low of 58°. 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.