S
M
T
W
T
F
S
31
89°
73°
1
92°
73°
2
94°
70°
3
89°
68°
4
87°
71°
5
83°
73°
6
89°
73°
7
87°
78°
8
91°
78°
9
92°
75°
10
91°
77°
11
93°
79°
12
93°
79°
13
92°
75°
14
91°
76°
15
83°
73°
16
88°
74°
17
89°
74°
18
94°
74°
19
90°
76°
20
90°
74°
21
91°
73°
22
95°
78°
23
93°
76°
24
94°
75°
25
93°
75°
26
94°
76°
27
95°
78°
28
97°
79°
29
98°
78°
30
99°
75°
1
97°
77°
2
96°
76°
3
97°
76°
4
98°
77°
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 93° to 99°, with overnight lows between 75° and 79°. The average high for June is 96° with an average low of 77°. 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.