S
M
T
W
T
F
S
31
78°
47°
1
73°
55°
2
76°
59°
3
83°
60°
4
86°
65°
5
92°
70°
6
91°
68°
7
80°
57°
8
69°
54°
9
74°
57°
10
76°
61°
11
80°
60°
12
81°
64°
13
81°
62°
14
82°
63°
15
85°
60°
16
75°
56°
17
76°
56°
18
78°
57°
19
80°
59°
20
82°
59°
21
81°
58°
22
78°
58°
23
78°
63°
24
79°
65°
25
81°
59°
26
79°
59°
27
82°
65°
28
85°
66°
29
83°
62°
30
81°
61°
1
80°
61°
2
80°
62°
3
82°
67°
4
86°
67°
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 69° to 92°, with overnight lows between 54° and 70°. The average high for June is 81° with an average low of 61°. 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.