California · NOAA station USC00046175
Frost dates for Newport Beach Harbor, CA
Newport Beach Harbor did not record a 32°F freeze in the 1991–2020 normals period, so it has no spring or fall frost date. Frost-tender plants can grow year-round here, though cold snaps are still possible. Nearby ZIP codes are in USDA hardiness zone 10b.
- 0%Chance of 32°F in a year
- 5%Chance of 36°F in a year
- 57.3°FAverage lowest temp (annual mean min)
USDA hardiness zone 10b (35 to 40°F) · see all zone 10b frost dates
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 5% |
| 32°F | 0% |
| 28°F | 0% |
| 24°F | 0% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 92662 | 10b | 35 to 40°F | 1 km |
| 92625 | 10b | 35 to 40°F | 2 km |
| 92661 | 10b | 35 to 40°F | 3 km |
| 92660 | 10b | 35 to 40°F | 4 km |
| 92663 | 10b | 35 to 40°F | 5 km |
| 92657 | 10b | 35 to 40°F | 5 km |
| 92627 | 10b | 35 to 40°F | 6 km |
Not the official USDA Plant Hardiness Zone Map. Zones shown here are the values published in the USDA-ARS / Oregon State University PRISM Group 2023 ZIP code tables, shown unaltered. For the official interactive map, visit planthardiness.ars.usda.gov.
About this station
- NOAA station ID USC00046175, at 33.6031, -117.8836, elevation 3 m (10 ft).
- Data quality: Representative (10+ years), 20 years of freeze data.
- Average days per year at or below 32°F: 0.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Santa Ana John Wayne Airport (9 km)
- Laguna Beach (11 km)
- Santa Ana Fire Station (16 km)
- Tustin Irvine Rch (16 km)
- Irvine Rch (20 km)
- Anaheim (29 km)
- Fullerton Muni Airport (31 km)
- Long Beach Daugherty Field (34 km)
Sources
- NOAA National Centers for Environmental Information, U.S. Climate Normals 1991–2020, annual/seasonal normals by station (version 1.0.1), file dated June 27, 2023; documentation.
- USDA Agricultural Research Service and PRISM Group, Oregon State University, 2023 Plant Hardiness Zone Map ZIP code tables (CONUS, Alaska, Hawaii, Puerto Rico), files dated November 17, 2023. Data © PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed November 1, 2026. Official map: planthardiness.ars.usda.gov.
- U.S. Census Bureau, 2024 Gazetteer ZIP Code Tabulation Areas file, dated August 30, 2024 (ZIP centroids used to find the nearest station).
Freeze dates are 30-year probabilities, not forecasts. Check your local forecast before planting tender plants.