S
M
T
W
T
F
S
31
91°
71°
1
93°
69°
2
87°
70°
3
85°
59°
4
84°
60°
5
89°
64°
6
87°
73°
7
81°
72°
8
86°
70°
9
83°
69°
10
85°
68°
11
86°
67°
12
90°
69°
13
89°
70°
14
88°
69°
15
86°
70°
16
90°
67°
17
87°
66°
18
91°
70°
19
92°
71°
20
94°
71°
21
91°
70°
22
92°
71°
23
92°
71°
24
91°
72°
25
92°
72°
26
92°
71°
27
93°
72°
28
91°
72°
29
92°
71°
30
91°
72°
1
86°
72°
2
87°
70°
3
86°
68°
4
87°
68°
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 81° to 94°, with overnight lows between 59° and 73°. The average high for June is 89° with an average low of 69°. 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.