Fountain Valley, CA planting zone & frost dates

Fountain Valley 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 Fountain Valley

92708 zone 10b
92728 zone 10b

Nearby cities

Garden Grove zone 10b
Huntington Beach zone 10b
Westminster zone 10b
Costa Mesa zone 10b
Santa Ana zone 10b
Newport Beach zone 10b
Stanton zone 10a
Orange zone 10b

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

Questions

What growing zone is Fountain Valley, CA?

Fountain Valley is in USDA Plant Hardiness Zone 10b (average extreme winter low 35°F to 40°F), according to the USDA 2023 map.

Frost dates: NOAA U.S. Climate Normals 1991–2020, station Santa Ana John Wayne Ap, CA (USW00093184), 8.7 km (5.4 mi) from the city center, elevation 16 m, based on 14 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.