S
M
T
W
T
F
S
1
71°
49°
2
67°
48°
3
74°
50°
4
71°
48°
5
67°
50°
6
70°
49°
7
75°
41°
8
82°
42°
9
67°
44°
10
66°
48°
11
82°
46°
12
85°
56°
13
82°
53°
14
76°
52°
15
85°
53°
16
88°
53°
17
97°
54°
18
91°
55°
19
97°
56°
20
91°
58°
21
84°
52°
22
74°
53°
23
92°
53°
24
87°
54°
25
81°
51°
26
77°
53°
27
78°
54°
28
71°
53°
29
86°
50°
30
68°
50°
31
66°
55°
1
68°
51°
2
68°
53°
3
79°
51°
4
85°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
March Weather in San Luis Obispo
San Luis Obispo'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 Luis Obispo. See also: April | May | June.
