Pasadena, CA planting zone & frost dates
Pasadena 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
Hardiness zone by ZIP code in Pasadena
- 91101 zone 10a
- 91102 zone 10b
- 91103 zone 10b
- 91104 zone 10a
- 91105 zone 10a
- 91106 zone 10a
- 91107 zone 10a
- 91109 zone 10a
- 91110 zone 10a
- 91114 zone 10b
- 91115 zone 10a
- 91116 zone 10a
- 91117 zone 10a
- 91121 zone 10a
- 91124 zone 10b
- 91125 zone 10a
- 91126 zone 10a
- 91129 zone 10b
- 91182 zone 10b
- 91184 zone 10b
- 91185 zone 10a
- 91188 zone 10b
- 91189 zone 10a
- 91199 zone 10b
Nearby cities
- South Pasadena zone 10a
- Altadena zone 10b
- San Marino zone 10a
- Alhambra zone 10a
- San Gabriel zone 10a
- La Cañada Flintridge zone 10a
- Monterey Park zone 10b
- Sierra Madre zone 10a
Questions
What growing zone is Pasadena, CA?
Pasadena 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 Pasadena, CA (USC00046719), 0.1 km (0.1 mi) from the city center, elevation 263 m, based on 25 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.