Frost dates for Mayport Pilot Station, FL
At Mayport Pilot Station, the median last spring frost (32°F) is Feb 1 and the median first fall frost is Jan 5, for a typical growing season of 332 days. For a 90% chance that the last frost has passed, wait until Mar 1. Nearby ZIP codes are in USDA hardiness zone 9b.
- Feb 1Last spring frost (median)50% chance of 32°F after this date
- Mar 1Safer planting date10% chance of 32°F after this date
- Jan 5First fall frost (median)50% chance of 32°F by this date
- 332 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 20 | Feb 18 | Mar 14 |
| 32°F | Jan 1 | Feb 1 | Mar 1 |
| 28°F | Dec 28 | Jan 22 | Feb 20 |
| 24°F | Jan 1 | Jan 20 | Feb 10 |
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 27 | Dec 20 | Jan 18 |
| 32°F | Dec 10 | Jan 5 | Feb 7 |
| 28°F | Dec 22 | Jan 13 | Feb 10 |
| 24°F | Dec 28 | Jan 18 | Feb 7 |
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 | 269 days | 301 days | 333 days |
| 32°F | 296 days | 332 days | 365 days |
| 28°F | 322 days | 365 days | 365 days |
| 24°F | 353 days | 365 days | 365 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 99% |
| 32°F | 84% |
| 28°F | 43% |
| 24°F | 13% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 32227 | 9b | 25 to 30°F | 2 km |
| 32228 | 9b | 25 to 30°F | 2 km |
| 32233 | 9b | 25 to 30°F | 5 km |
| 32226 | 9b | 25 to 30°F | 12 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 USW00003853, at 30.4000, -81.4167, elevation 5 m (16 ft).
- Data quality: Representative (10+ years), 26 years of freeze data.
- Average days per year at or below 32°F: 3.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Jacksonville Craig Muni Airport (12 km)
- Jacksonville Beach (13 km)
- Jacksonville (29 km)
- Fernandina Beach (30 km)
- Jacksonville NAS (30 km)
- Jackson Whitehouse Nolf (45 km)
- St. Augustine Lighthouse (58 km)
- Hastings 4ne (71 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.