S
M
T
W
T
F
S
1
92°
68°
2
91°
66°
3
93°
67°
4
92°
71°
5
93°
73°
6
93°
71°
7
91°
66°
8
66°
59°
9
85°
62°
10
91°
73°
11
93°
65°
12
76°
57°
13
88°
52°
14
97°
60°
15
100°
67°
16
68°
52°
17
73°
44°
18
84°
53°
19
89°
59°
20
94°
61°
21
97°
64°
22
95°
64°
23
92°
65°
24
94°
66°
25
95°
67°
26
95°
69°
27
97°
67°
28
76°
60°
29
90°
64°
30
93°
67°
31
95°
70°
1
95°
72°
2
94°
73°
3
96°
75°
4
86°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
March Weather in Los Fresnos
Los Fresnos'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 Los Fresnos. See also: April | May | June.