Irvine, CA planting zone & frost dates
Irvine 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 Irvine
- 92602 zone 10b
- 92603 zone 10b
- 92604 zone 10a
- 92606 zone 10b
- 92612 zone 10b
- 92614 zone 10b
- 92616 zone 10b
- 92617 zone 10b
- 92618 zone 10b
- 92619 zone 10b
- 92620 zone 10a
- 92623 zone 10b
- 92697 zone 10b
Nearby cities
- Turtle Rock zone 10b
- Tustin zone 10a
- Santa Ana zone 10b
- North Tustin zone 10b
- Costa Mesa zone 10b
- Laguna Woods zone 10b
- Newport Beach zone 10b
- Orange zone 10b
Questions
What growing zone is Irvine, CA?
Irvine 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 Santa Ana John Wayne Ap, CA (USW00093184), 4.2 km (2.6 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.