S
M
T
W
T
F
S
1
90°
56°
2
78°
56°
3
78°
49°
4
73°
51°
5
71°
55°
6
78°
45°
7
73°
49°
8
78°
52°
9
74°
54°
10
75°
57°
11
79°
50°
12
93°
51°
13
92°
58°
14
83°
53°
15
82°
49°
16
95°
49°
17
96°
63°
18
96°
62°
19
98°
60°
20
101°
63°
21
93°
61°
22
90°
57°
23
89°
58°
24
86°
59°
25
89°
58°
26
89°
57°
27
89°
55°
28
92°
56°
29
93°
58°
30
81°
58°
31
70°
63°
1
74°
62°
2
69°
55°
3
81°
52°
4
93°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
March Weather in Rancho Bernardo
Rancho Bernardo'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 Rancho Bernardo. See also: April | May | June.