Fallbrook, CA planting zone & frost dates

Fallbrook is in USDA hardiness zone 10b. Frost is rare here: in most years temperatures do not drop to 32°F.

USDA hardiness zone10bavg. extreme winter low 35°F to 40°F

FrostRarein most years the nearest weather station records no 32°F freeze

Useful for zone 10b gardens

Drip irrigation kit — saves water in long, hot seasons
Shade cloth — protects plants from midday sun
Soil moisture meter
Plants for zone 10

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Hardiness zone by ZIP code in Fallbrook

92028 zone 10a
92088 zone 10b

Nearby cities

Temecula zone 9b
Vista zone 10a
Murrieta zone 9b
Camp Pendleton South zone 10a
Oceanside zone 10a
Wildomar zone 9b, last frost Jan 28
Carlsbad zone 10b, last frost Jan 23
San Marcos zone 10a

All cities in California → · Other zone 10b cities →

Questions

What growing zone is Fallbrook, CA?

Fallbrook is in USDA Plant Hardiness Zone 10b (average extreme winter low 35°F to 40°F), according to the USDA 2023 map. Some ZIP codes of the city fall in zone 10a.

Frost dates: NOAA U.S. Climate Normals 1991–2020, station Fallbrook 5 Ne, CA (USW00053151), 9.0 km (5.6 mi) from the city center, elevation 348 m, based on 13 years of records. Hardiness zone: USDA Plant Hardiness Zone Map 2023 for the ZIP code nearest to the city center. Microclimates (valleys, hills, cities, coasts) can be warmer or colder: check the local forecast before planting. How we calculate the data.