S
M
T
W
T
F
S
29
48°
34°
30
52°
27°
31
58°
29°
1
47°
40°
2
53°
38°
3
57°
35°
4
67°
30°
5
73°
36°
6
74°
36°
7
58°
36°
8
64°
27°
9
64°
38°
10
70°
47°
11
60°
45°
12
61°
43°
13
58°
39°
14
49°
38°
15
53°
32°
16
58°
36°
17
54°
40°
18
54°
42°
19
58°
41°
20
59°
40°
21
58°
38°
22
59°
40°
23
56°
38°
24
54°
37°
25
54°
37°
26
57°
38°
27
61°
38°
28
62°
39°
29
56°
39°
30
56°
43°
1
57°
40°
2
57°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Union
Union's April 2026 forecast shows daily high temperatures ranging from 49° to 70°, with overnight lows between 32° and 47°. The average high for April is 58° with an average low of 40°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how April weather will actually feel in Union. See also: May | June | July.