Atascadero, CA Weather & Growing Conditions

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

This Afternoon

64°F

Slight Chance Rain Showers

A slight chance of rain showers after 4pm. Mostly sunny, with a high near 64. West southwest wind around 10 mph. Chance of precipitation is 20%.

7-day forecast for Atascadero

When	Temp	Forecast	Wind	Precip
This Afternoon	64°F	Slight Chance Rain Showers	10 mph WSW	15%
Tonight	45°F	Slight Chance Rain Showers then Partly Cloudy	0 to 10 mph NW	15%
Wednesday	68°F	Mostly Sunny	5 to 10 mph NNE	0%
Wednesday Night	46°F	Partly Cloudy	5 to 15 mph NE	0%
Thursday	71°F	Sunny	5 to 10 mph NE	0%
Thursday Night	45°F	Mostly Clear	10 mph NE	0%
Friday	75°F	Sunny	10 mph NNE	0%
Friday Night	47°F	Clear	5 to 15 mph NE	0%
Saturday	81°F	Sunny	0 to 5 mph N	0%
Saturday Night	48°F	Mostly Clear	0 to 5 mph NNE	0%
Sunday	80°F	Sunny	5 mph NE	0%
Sunday Night	50°F	Partly Cloudy	0 to 5 mph NE	0%
Monday	78°F	Mostly Sunny	0 to 5 mph N	0%
Monday Night	49°F	Partly Cloudy	0 to 5 mph NNE	0%

Forecast source: National Weather Service (api.weather.gov) for Atascadero (35.486, -120.688). Updated through the day.

Growing snapshot for Atascadero

Last spring frost

Jan 19

First fall frost

Jan 14

Growing season

365 days

Hardiness zone

More local growing data for Atascadero: nearby ZIP 93422 weather · frost dates · planting calendar · California frost dates

Nearby towns & communities

Arroyo Grande 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 Santa Margarita Shandon Templeton Whitley Gardens Woodlands

All California locations ›

Climate data from the nearest NOAA station, Morro Bay Fire Dept, Ca (11.1 mi from Atascadero). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.