Frost dates for Oceanside Muni Airport, CA
At Oceanside Muni Airport, the median last spring frost (32°F) is Jan 23 and the median first fall frost is Dec 11, for a typical growing season of 325 days. For a 90% chance that the last frost has passed, wait until Feb 22. Nearby ZIP codes are in USDA hardiness zone 10a.
- Jan 23Last spring frost (median)50% chance of 32°F after this date
- Feb 22Safer planting date10% chance of 32°F after this date
- Dec 11First fall frost (median)50% chance of 32°F by this date
- 325 daysGrowing season (median)between 32°F freezes
Last spring frost dates
The chance that the temperature drops to the threshold after each date.
| Temperature | 90% chance later | 50% chance later | 10% chance later |
|---|---|---|---|
| 36°F | Jan 29 | Feb 27 | Apr 6 |
| 32°F | Dec 22 | Jan 23 | Feb 22 |
| 28°F | Dec 9 | Dec 31 | Jan 31 |
First fall frost dates
The chance that the temperature has dropped to the threshold by each date.
| Temperature | 10% chance by | 50% chance by | 90% chance by |
|---|---|---|---|
| 36°F | Nov 7 | Nov 24 | Dec 12 |
| 32°F | Nov 21 | Dec 11 | Jan 15 |
| 28°F | Dec 3 | Dec 23 | Jan 25 |
Growing season length
Days between the last spring and first fall freeze, as the length reached in 9, 5 and 1 out of 10 years.
| Temperature | 9 in 10 years at least | 5 in 10 years at least | 1 in 10 years at least |
|---|---|---|---|
| 36°F | 230 days | 268 days | 302 days |
| 32°F | 287 days | 325 days | 360 days |
| 28°F | 336 days | 365 days | 365 days |
| 24°F | 365 days | 365 days | 365 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 91% |
| 28°F | 41% |
| 24°F | 3% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 92054 | 10a | 30 to 35°F | 3 km |
| 92056 | 10a | 30 to 35°F | 5 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 USW00053121, at 33.2194, -117.3494, elevation 8 m (28 ft).
- Data quality: Representative (10+ years), 14 years of freeze data.
- Average days per year at or below 32°F: 8.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Oceanside Marina (4 km)
- Camp Pendleton MCAS (9 km)
- Vista (11 km)
- Carlsbad Palomar Airport (12 km)
- Escondido #2 (27 km)
- Fallbrook 5 NE (29 km)
- Valley Center 1n (29 km)
- Rancho Bernardo (33 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.