Imperial Beach, CA planting zone & frost dates

Imperial Beach 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 Imperial Beach

91932 zone 10b
91933 zone 10b

Nearby cities

Chula Vista zone 10b
National City zone 10b
Bonita zone 10b
Coronado zone 10b
San Diego zone 10b
La Presa zone 10b
Lemon Grove zone 10b, last frost Jan 6
Spring Valley zone 10b, last frost Jan 6

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

Questions

What growing zone is Imperial Beach, CA?

Imperial Beach 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 Imperial Beach Ream Fld Nas, CA (USW00093115), 1.9 km (1.2 mi) from the city center, elevation 7 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.