S
M
T
W
T
F
S
29
49°
20°
30
67°
37°
31
76°
51°
1
75°
46°
2
45°
37°
3
67°
37°
4
68°
39°
5
56°
39°
6
50°
31°
7
46°
23°
8
49°
25°
9
53°
33°
10
64°
43°
11
58°
35°
12
58°
39°
13
65°
53°
14
78°
54°
15
72°
40°
16
60°
37°
17
56°
38°
18
59°
41°
19
63°
38°
20
57°
35°
21
62°
39°
22
61°
40°
23
54°
40°
24
60°
39°
25
63°
36°
26
55°
34°
27
55°
35°
28
57°
36°
29
57°
34°
30
55°
34°
1
56°
38°
2
58°
35°
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 46° to 78°, with overnight lows between 23° and 54°. The average high for April is 59° with an average low of 37°. 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.