Arroyo Grande, CA Weather & Growing Conditions

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

Today

69°F

Patchy Fog then Partly Sunny

Patchy fog before 11am. Partly sunny, with a high near 69. Southwest wind 0 to 10 mph.

7-day forecast for Arroyo Grande

When	Temp	Forecast	Wind	Precip
Today	69°F	Patchy Fog then Partly Sunny	0 to 10 mph SW	1%
Tonight	56°F	Patchy Fog	0 to 5 mph W	1%
Wednesday	69°F	Patchy Fog then Mostly Sunny	0 to 10 mph W	0%
Wednesday Night	58°F	Patchy Fog	0 to 5 mph WNW	0%
Thursday	70°F	Patchy Fog then Mostly Sunny	0 to 5 mph W	0%
Thursday Night	57°F	Patchy Fog	0 to 5 mph WNW	0%
Friday	74°F	Patchy Fog then Mostly Sunny	0 to 5 mph W	0%
Friday Night	58°F	Partly Cloudy	0 to 5 mph W	0%
Saturday	76°F	Mostly Sunny	0 to 5 mph SW	0%
Saturday Night	58°F	Partly Cloudy	0 to 5 mph SW	0%
Sunday	75°F	Mostly Sunny	0 to 5 mph SW	0%
Sunday Night	57°F	Partly Cloudy	0 to 5 mph WNW	1%
Monday	72°F	Mostly Sunny	0 to 10 mph SW	1%
Monday Night	55°F	Partly Cloudy	0 to 5 mph WNW	1%

Forecast source: National Weather Service (api.weather.gov) for Arroyo Grande (35.124, -120.585). Updated through the day.

Growing snapshot for Arroyo Grande

Last spring frost

Feb 1

First fall frost

Jan 4

Growing season

362 days

Hardiness zone

10a

More local growing data for Arroyo Grande: nearby ZIP 93433 weather · frost dates · planting calendar · California frost dates

Nearby towns & communities

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 Santa Margarita Shandon Templeton Whitley Gardens Woodlands

All California locations ›

Climate data from the nearest NOAA station, Pismo Beach, Ca (4.5 mi from Arroyo Grande). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.