Frost dates for Jacksonville NAS, FL
At Jacksonville NAS, 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 330 days. For a 90% chance that the last frost has passed, wait until Mar 3. Nearby ZIP codes are in USDA hardiness zones 9a to 9b.
- Feb 1Last spring frost (median)50% chance of 32°F after this date
- Mar 3Safer planting date10% chance of 32°F after this date
- Jan 5First fall frost (median)50% chance of 32°F by this date
- 330 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 15 |
| 32°F | Dec 31 | Feb 1 | Mar 3 |
| 28°F | Dec 28 | Jan 22 | Feb 19 |
| 24°F | Dec 21 | Jan 17 | Feb 6 |
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 20 | Dec 17 | Jan 22 |
| 32°F | Dec 3 | Jan 5 | Feb 6 |
| 28°F | Dec 19 | Jan 14 | Feb 12 |
| 24°F | Dec 15 | Jan 15 | Feb 5 |
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 | 265 days | 302 days | 334 days |
| 32°F | 299 days | 330 days | 365 days |
| 28°F | 325 days | 365 days | 365 days |
| 24°F | 359 days | 365 days | 365 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 98% |
| 32°F | 80% |
| 28°F | 42% |
| 24°F | 13% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 32212 | 9b | 25 to 30°F | 1 km |
| 32214 | 9b | 25 to 30°F | 3 km |
| 32217 | 9b | 25 to 30°F | 4 km |
| 32207 | 9b | 25 to 30°F | 7 km |
| 32257 | 9b | 25 to 30°F | 7 km |
| 32244 | 9b | 25 to 30°F | 8 km |
| 32210 | 9b | 25 to 30°F | 9 km |
| 32223 | 9b | 25 to 30°F | 9 km |
| 32205 | 9b | 25 to 30°F | 9 km |
| 32204 | 9b | 25 to 30°F | 9 km |
| 32073 | 9b | 25 to 30°F | 10 km |
| 32202 | 9b | 25 to 30°F | 10 km |
| 32203 | 9b | 25 to 30°F | 12 km |
| 32254 | 9b | 25 to 30°F | 14 km |
| 32258 | 9b | 25 to 30°F | 15 km |
| 32003 | 9b | 25 to 30°F | 16 km |
| 32222 | 9a | 20 to 25°F | 16 km |
| 32259 | 9b | 25 to 30°F | 19 km |
| 32068 | 9a | 20 to 25°F | 27 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 USW00093837, at 30.2333, -81.6667, elevation 6 m (20 ft).
- Data quality: Representative (10+ years), 23 years of freeze data.
- Average days per year at or below 32°F: 4.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Jacksonville Craig Muni Airport (19 km)
- Jackson Whitehouse Nolf (25 km)
- Jacksonville Beach (27 km)
- Jacksonville (28 km)
- Mayport Pilot Station (30 km)
- Glen St. Mary 1 W (50 km)
- Fernandina Beach (52 km)
- St. Augustine Lighthouse (53 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.