S
M
T
W
T
F
S
1
83°
59°
2
82°
63°
3
86°
67°
4
86°
70°
5
85°
69°
6
86°
68°
7
81°
57°
8
66°
53°
9
83°
62°
10
83°
71°
11
75°
57°
12
65°
43°
13
77°
46°
14
81°
50°
15
88°
50°
16
51°
37°
17
62°
30°
18
74°
43°
19
81°
48°
20
84°
58°
21
88°
62°
22
87°
62°
23
83°
62°
24
83°
61°
25
85°
66°
26
85°
66°
27
86°
63°
28
70°
56°
29
82°
48°
30
85°
66°
31
88°
67°
1
87°
69°
2
80°
69°
3
82°
71°
4
74°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
March Weather in Union
Union'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. See also: April | May | June.