S
M
T
W
T
F
S
31
89°
73°
1
90°
73°
2
89°
71°
3
87°
70°
4
85°
71°
5
83°
72°
6
85°
75°
7
85°
77°
8
91°
73°
9
96°
72°
10
93°
74°
11
94°
75°
12
92°
75°
13
94°
76°
14
92°
71°
15
94°
74°
16
94°
74°
17
92°
73°
18
87°
74°
19
88°
74°
20
89°
75°
21
91°
74°
22
91°
74°
23
92°
73°
24
92°
74°
25
93°
75°
26
91°
74°
27
91°
74°
28
92°
75°
29
93°
74°
30
94°
75°
1
95°
75°
2
95°
74°
3
96°
75°
4
96°
76°
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 83° to 96°, with overnight lows between 70° and 77°. The average high for June is 91° with an average low of 74°. 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.