S
M
T
W
T
F
S
1
43°
27°
2
32°
21°
3
35°
28°
4
44°
34°
5
47°
41°
6
42°
38°
7
48°
38°
8
64°
38°
9
71°
28°
10
79°
33°
11
76°
48°
12
61°
32°
13
48°
27°
14
50°
28°
15
47°
34°
16
64°
33°
17
35°
27°
18
36°
21°
19
50°
31°
20
67°
28°
21
54°
43°
22
77°
41°
23
56°
34°
24
47°
33°
25
56°
28°
26
75°
46°
27
62°
30°
28
45°
28°
29
58°
25°
30
67°
37°
31
80°
53°
1
76°
53°
2
53°
41°
3
64°
41°
4
82°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
March Weather in Union Square
Union Square's March 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for March is ° with an average low of °. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how March weather will actually feel in Union Square. See also: April | May | June.