Santa Margarita, CA Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Santa Margarita, a community in San Luis Obispo County, California.

This Afternoon

86°F

Mostly Sunny

Mostly sunny, with a high near 86. West southwest wind 5 to 10 mph.

7-day forecast for Santa Margarita

When	Temp	Forecast	Wind	Precip
This Afternoon	86°F	Mostly Sunny	5 to 10 mph WSW	0%
Tonight	48°F	Mostly Cloudy	5 mph N	0%
Sunday	83°F	Partly Sunny	5 to 10 mph W	1%
Sunday Night	45°F	Mostly Cloudy then Patchy Fog	0 to 5 mph SSW	4%
Monday	77°F	Patchy Fog then Mostly Sunny	0 to 10 mph SW	1%
Monday Night	44°F	Partly Cloudy	0 to 10 mph NW	1%
Tuesday	80°F	Sunny	5 to 10 mph NW	0%
Tuesday Night	56°F	Mostly Clear	0 to 5 mph N	0%
Wednesday	94°F	Sunny	0 to 5 mph NNW	0%
Wednesday Night	60°F	Mostly Clear	0 to 5 mph NNE	0%
Thursday	94°F	Sunny	0 to 5 mph S	0%
Thursday Night	59°F	Mostly Clear	0 to 5 mph SSE	0%
Friday	87°F	Sunny	0 to 10 mph S	1%
Friday Night	55°F	Partly Cloudy	0 to 5 mph SSW	3%

Forecast source: National Weather Service (api.weather.gov) for Santa Margarita (35.389, -120.608). Updated through the day.

Growing snapshot for Santa Margarita

Last spring frost

Jan 16

First fall frost

Dec 25

Growing season

349 days

Hardiness zone

More local growing data for Santa Margarita: nearby ZIP 93410 weather · frost dates · planting calendar · California frost dates

Nearby towns & communities

Arroyo Grande Atascadero Avila Beach Blacklake California Polytechnic State University Callender Cambria Cayucos Creston Edna El Paso de Robles (Paso Robles) Garden Farms Grover Beach Los Berros Los Osos Los Ranchos Morro Bay Nipomo Oceano Pismo Beach San Luis Obispo San Miguel San Simeon Shandon Templeton Whitley Gardens Woodlands

All California locations ›

Climate data from the nearest NOAA station, San Luis Obispo Poly, Ca (0.3 mi from Santa Margarita). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.