S
M
T
W
T
F
S
31
75°
47°
1
78°
53°
2
79°
51°
3
82°
54°
4
84°
63°
5
86°
64°
6
87°
64°
7
86°
67°
8
83°
65°
9
84°
64°
10
82°
64°
11
83°
62°
12
80°
60°
13
80°
62°
14
79°
59°
15
74°
55°
16
74°
55°
17
75°
56°
18
76°
60°
19
78°
60°
20
81°
64°
21
77°
64°
22
81°
63°
23
77°
64°
24
78°
61°
25
78°
63°
26
85°
65°
27
82°
61°
28
78°
60°
29
78°
59°
30
79°
58°
1
79°
65°
2
82°
66°
3
84°
65°
4
80°
59°
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 74° to 87°, with overnight lows between 51° and 67°. The average high for June is 80° 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.