Alhambra, CA planting zone & frost dates
Alhambra is in USDA hardiness zone 10a. Frost is rare here: in most years temperatures do not drop to 32°F.
USDA hardiness zone10aavg. extreme winter low 30°F to 35°F
FrostRarein most years the nearest weather station records no 32°F freeze
Hardiness zone by ZIP code in Alhambra
- 91801 zone 10a
- 91802 zone 10a
- 91803 zone 10b
- 91804 zone 10a
- 91896 zone 10a
- 91899 zone 10a
Nearby cities
- San Gabriel zone 10a
- South Pasadena zone 10a
- Monterey Park zone 10b
- San Marino zone 10a
- Pasadena zone 10b
- Rosemead zone 10b
- Temple City zone 10a
- East Los Angeles zone 10b
Questions
What growing zone is Alhambra, CA?
Alhambra is in USDA Plant Hardiness Zone 10a (average extreme winter low 30°F to 35°F), according to the USDA 2023 map. Some ZIP codes of the city fall in zone 10b.
Frost dates: NOAA U.S. Climate Normals 1991–2020, station San Gabriel Fire Dept, CA (USC00047785), 2.8 km (1.7 mi) from the city center, elevation 111 m, based on 18 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.