S
M
T
W
T
F
S
29
58°
32°
30
73°
46°
31
82°
62°
1
81°
52°
2
54°
42°
3
67°
42°
4
72°
43°
5
58°
43°
6
58°
42°
7
54°
31°
8
49°
34°
9
53°
40°
10
67°
52°
11
66°
46°
12
60°
52°
13
73°
62°
14
82°
63°
15
78°
51°
16
66°
48°
17
60°
50°
18
68°
53°
19
67°
48°
20
63°
46°
21
68°
51°
22
68°
52°
23
69°
52°
24
70°
51°
25
70°
45°
26
61°
46°
27
59°
45°
28
63°
45°
29
62°
44°
30
60°
44°
1
63°
47°
2
64°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Union Square
Union Square's April 2026 forecast shows daily high temperatures ranging from 49° to 82°, with overnight lows between 31° and 63°. The average high for April is 65° with an average low of 48°. 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 Square. See also: May | June | July.