S
M
T
W
T
F
S
31
71°
34°
1
79°
37°
2
85°
39°
3
68°
54°
4
68°
50°
5
61°
45°
6
60°
44°
7
66°
38°
8
55°
48°
9
60°
49°
10
64°
45°
11
71°
46°
12
75°
48°
13
84°
50°
14
91°
56°
15
92°
58°
16
83°
53°
17
73°
48°
18
67°
47°
19
66°
48°
20
75°
50°
21
74°
49°
22
73°
52°
23
69°
51°
24
74°
52°
25
66°
48°
26
65°
49°
27
65°
50°
28
66°
49°
29
72°
53°
30
75°
53°
1
75°
52°
2
74°
51°
3
75°
53°
4
72°
49°
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 64° to 92°, with overnight lows between 45° and 58°. The average high for June is 73° with an average low of 50°. 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.