S
M
T
W
T
F
S
31
52°
36°
1
59°
40°
2
68°
38°
3
66°
45°
4
75°
47°
5
76°
51°
6
59°
51°
7
65°
50°
8
71°
44°
9
81°
52°
10
76°
52°
11
73°
56°
12
66°
55°
13
70°
53°
14
72°
50°
15
76°
58°
16
74°
52°
17
72°
50°
18
63°
53°
19
76°
59°
20
69°
54°
21
73°
53°
22
64°
51°
23
69°
55°
24
79°
57°
25
77°
55°
26
70°
61°
27
78°
57°
28
78°
57°
29
85°
61°
30
81°
62°
1
78°
62°
2
86°
65°
3
78°
61°
4
75°
60°
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 86°, with overnight lows between 57° and 65°. The average high for June is 79° with an average low of 61°. 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.