S
M
T
W
T
F
S
31
97°
66°
1
91°
66°
2
87°
64°
3
83°
56°
4
84°
59°
5
86°
63°
6
81°
65°
7
84°
67°
8
83°
66°
9
86°
70°
10
85°
69°
11
83°
67°
12
83°
66°
13
82°
67°
14
83°
68°
15
85°
69°
16
86°
69°
17
83°
68°
18
87°
69°
19
87°
69°
20
86°
70°
21
88°
70°
22
88°
69°
23
87°
70°
24
86°
70°
25
85°
68°
26
88°
70°
27
88°
69°
28
84°
70°
29
84°
70°
30
85°
69°
1
84°
67°
2
86°
70°
3
85°
70°
4
84°
69°
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 91°, with overnight lows between 56° and 70°. The average high for June is 85° with an average low of 68°. 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.