S
M
T
W
T
F
S
31
79°
56°
1
75°
55°
2
75°
51°
3
79°
57°
4
78°
58°
5
75°
57°
6
78°
58°
7
77°
55°
8
77°
57°
9
78°
56°
10
80°
59°
11
82°
60°
12
81°
60°
13
83°
59°
14
83°
61°
15
82°
61°
16
78°
60°
17
84°
62°
18
84°
61°
19
83°
62°
20
84°
62°
21
84°
63°
22
86°
62°
23
80°
62°
24
80°
61°
25
81°
59°
26
80°
58°
27
81°
61°
28
81°
60°
29
82°
57°
30
84°
57°
1
85°
58°
2
85°
63°
3
87°
61°
4
87°
63°
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 75° to 87°, with overnight lows between 51° and 63°. The average high for June is 81° with an average low of 59°. 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.