S
M
T
W
T
F
S
31
70°
63°
1
84°
63°
2
74°
52°
3
80°
53°
4
83°
59°
5
87°
60°
6
88°
64°
7
86°
65°
8
83°
66°
9
81°
66°
10
82°
64°
11
84°
66°
12
88°
65°
13
89°
67°
14
90°
66°
15
86°
64°
16
89°
68°
17
89°
67°
18
85°
68°
19
84°
68°
20
84°
67°
21
85°
68°
22
87°
68°
23
88°
67°
24
85°
68°
25
86°
66°
26
88°
67°
27
90°
68°
28
91°
69°
29
87°
69°
30
86°
65°
1
86°
64°
2
87°
68°
3
86°
69°
4
87°
69°
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 91°, with overnight lows between 52° and 69°. The average high for June is 86° with an average low of 65°. 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.