San Luis Obispo County, California
Local growing conditions for San Luis Obispo County: the USDA hardiness zones found here, frost dates, and live weather for communities across the county. Based on 23 ZIP codes in our data.
Hardiness zones in San Luis Obispo County
San Luis Obispo County spans these USDA plant hardiness zones (by number of ZIP codes):
Local weather & frost dates
Open any community in San Luis Obispo County for its live forecast, frost dates, and planting calendar:
California Polytechnic State University 93407
California Polytechnic State University 93410
San Luis Obispo 93401
Los Osos 93402
San Luis Obispo 93405
San Luis Obispo 93408
San Luis Obispo 93409
Arroyo Grande 93420
Atascadero 93422
Avila Beach 93424
Cambria 93428
Cayucos 93430
Creston 93432
Grover Beach 93433
Morro Bay 93442
Nipomo 93444
Callender 93445
El Paso de Robles (Paso Robles) 93446
Pismo Beach 93449
San Simeon 93452
Nipomo 93453
Shandon 93461
Templeton 93465
More for California
- Agriculture in California
- Frost dates across California
- USDA hardiness zones explained
- Planting calendar by ZIP code
County growing conditions are compiled from our ZIP-code database, USDA hardiness-zone data, and NOAA climate normals. Conditions vary within a county by elevation and local microclimate. Page updated Aug 4, 2026.