San Simeon, CA Weather & Growing Conditions

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

Today

81°F

Patchy Fog then Partly Sunny

Patchy fog before 11am. Partly sunny, with a high near 81. West southwest wind 0 to 5 mph.

7-day forecast for San Simeon

When	Temp	Forecast	Wind	Precip
Today	81°F	Patchy Fog then Partly Sunny	0 to 5 mph WSW	0%
Tonight	53°F	Patchy Fog	0 to 5 mph WNW	0%
Wednesday	82°F	Patchy Fog then Mostly Sunny	0 to 5 mph W	0%
Wednesday Night	55°F	Patchy Fog	0 to 5 mph NW	0%
Thursday	85°F	Patchy Fog then Mostly Sunny	0 to 5 mph WNW	0%
Thursday Night	55°F	Patchy Fog	0 to 5 mph NW	0%
Friday	77°F	Patchy Fog then Mostly Sunny	0 to 5 mph WNW	0%
Friday Night	59°F	Partly Cloudy	0 to 5 mph NW	0%
Saturday	77°F	Mostly Sunny	0 to 5 mph W	0%
Saturday Night	59°F	Partly Cloudy	0 to 5 mph NW	0%
Sunday	75°F	Mostly Sunny	0 to 5 mph WNW	0%
Sunday Night	56°F	Partly Cloudy	0 to 5 mph NW	1%
Monday	71°F	Mostly Sunny	0 to 5 mph WSW	1%
Monday Night	54°F	Partly Cloudy	0 to 5 mph WNW	1%

Forecast source: National Weather Service (api.weather.gov) for San Simeon (35.618, -121.137). Updated through the day.

Growing snapshot for San Simeon

Last spring frost

Feb 13

First fall frost

Feb 1

Growing season

365 days

Hardiness zone

10a

More local growing data for San Simeon: nearby ZIP 93428 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 Santa Margarita Shandon Templeton Whitley Gardens Woodlands

All California locations ›

Climate data from the nearest NOAA station, Hearst Castle, Ca (9.9 mi from San Simeon). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.