Frost dates for Jacksonville, FL
At Jacksonville, the median last spring frost (32°F) is Feb 25 and the median first fall frost is Dec 7, for a typical growing season of 288 days. For a 90% chance that the last frost has passed, wait until Mar 19. Nearby ZIP codes are in USDA hardiness zones 9a to 9b.
- Feb 25Last spring frost (median)50% chance of 32°F after this date
- Mar 19Safer planting date10% chance of 32°F after this date
- Dec 7First fall frost (median)50% chance of 32°F by this date
- 288 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 | Feb 19 | Mar 13 | Apr 1 |
| 32°F | Jan 22 | Feb 25 | Mar 19 |
| 28°F | Jan 4 | Feb 4 | Mar 4 |
| 24°F | Dec 26 | Jan 21 | Feb 15 |
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 22 | Dec 13 |
| 32°F | Nov 17 | Dec 7 | Jan 10 |
| 28°F | Nov 29 | Jan 2 | Feb 3 |
| 24°F | Dec 9 | Jan 10 | Feb 8 |
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 | 229 days | 256 days | 287 days |
| 32°F | 256 days | 288 days | 326 days |
| 28°F | 288 days | 325 days | 365 days |
| 24°F | 324 days | 365 days | 365 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 100% |
| 28°F | 87% |
| 24°F | 48% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 32218 | 9b | 25 to 30°F | 3 km |
| 32208 | 9b | 25 to 30°F | 10 km |
| 32209 | 9b | 25 to 30°F | 14 km |
| 32011 | 9a | 20 to 25°F | 16 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 USW00013889, at 30.4844, -81.7019, elevation 10 m (33 ft).
- Data quality: Standard (24+ years of data), 29 years of freeze data.
- Average days per year at or below 32°F: 14.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Jackson Whitehouse Nolf (23 km)
- Jacksonville Craig Muni Airport (24 km)
- Jacksonville NAS (28 km)
- Mayport Pilot Station (29 km)
- Fernandina Beach (31 km)
- Jacksonville Beach (37 km)
- Glen St. Mary 1 W (52 km)
- Starke (73 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.