S
M
T
W
T
F
S
1
74°
34°
2
77°
32°
3
70°
36°
4
66°
29°
5
66°
29°
6
52°
30°
7
57°
27°
8
64°
31°
9
71°
34°
10
69°
47°
11
66°
45°
12
70°
30°
13
73°
32°
14
78°
33°
15
64°
41°
16
64°
25°
17
75°
31°
18
83°
44°
19
86°
39°
20
86°
45°
21
88°
38°
22
84°
43°
23
73°
39°
24
85°
40°
25
88°
48°
26
85°
41°
27
63°
43°
28
66°
32°
29
80°
35°
30
79°
47°
31
74°
47°
1
62°
41°
2
73°
36°
3
63°
42°
4
64°
31°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
March Weather in San Ysidro
San Ysidro'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 San Ysidro. See also: April | May | June.
