S
M
T
W
T
F
S
1
63°
52°
2
62°
49°
3
71°
48°
4
63°
47°
5
63°
46°
6
64°
42°
7
70°
51°
8
80°
49°
9
63°
47°
10
61°
49°
11
79°
45°
12
82°
55°
13
73°
49°
14
66°
50°
15
77°
49°
16
83°
56°
17
91°
57°
18
88°
58°
19
90°
57°
20
81°
58°
21
72°
52°
22
63°
51°
23
86°
53°
24
84°
56°
25
72°
50°
26
73°
53°
27
73°
54°
28
62°
52°
29
71°
50°
30
68°
51°
31
65°
55°
1
65°
50°
2
62°
51°
3
77°
47°
4
83°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
March Weather in Los Osos
Los Osos'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 Osos. See also: April | May | June.