S
M
T
W
T
F
S
1
88°
50°
2
87°
51°
3
83°
53°
4
81°
46°
5
79°
47°
6
70°
53°
7
68°
42°
8
76°
41°
9
80°
47°
10
66°
51°
11
76°
47°
12
75°
48°
13
83°
46°
14
84°
55°
15
83°
51°
16
60°
37°
17
77°
37°
18
90°
48°
19
92°
51°
20
94°
53°
21
95°
47°
22
96°
53°
23
84°
57°
24
93°
53°
25
95°
56°
26
94°
59°
27
82°
50°
28
72°
43°
29
87°
52°
30
89°
64°
31
85°
65°
1
78°
64°
2
82°
58°
3
84°
56°
4
77°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
March Weather in La Union
La Union's March 2026 forecast shows daily high temperatures ranging from 77° to 84°, with overnight lows between 55° and 58°. The average high for March is 81° with an average low of 56°. 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 La Union. See also: April | May | June.