S
M
T
W
T
F
S
1
77°
46°
2
67°
45°
3
67°
47°
4
66°
49°
5
67°
43°
6
75°
42°
7
78°
37°
8
89°
40°
9
67°
44°
10
68°
49°
11
69°
43°
12
85°
46°
13
85°
46°
14
74°
45°
15
69°
52°
16
77°
47°
17
87°
50°
18
83°
50°
19
83°
49°
20
85°
51°
21
80°
50°
22
74°
55°
23
70°
59°
24
71°
57°
25
71°
58°
26
73°
58°
27
73°
57°
28
75°
52°
29
74°
47°
30
72°
50°
31
70°
62°
1
72°
51°
2
69°
51°
3
72°
47°
4
82°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
March Weather in Oceanside
Oceanside'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 Oceanside. See also: April | May | June.