Florida · NOAA station USC00082418
Frost dates for Dry Tortugas, FL
Dry Tortugas 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 zones 10b to 11b.
- 0%Chance of 32°F in a year
- 0%Chance of 36°F in a year
- 72.4°FAverage lowest temp (annual mean min)
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 0% |
| 32°F | 0% |
| 28°F | 0% |
| 24°F | 0% |
Closest ZIP codes (each is closer to another station)
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 33040 | 11b | 45 to 50°F | 97 km |
| 33042 | 11b | 45 to 50°F | 139 km |
| 33043 | 11b | 45 to 50°F | 163 km |
| 34145 | 10b | 35 to 40°F | 185 km |
| 33051 | 11b | 45 to 50°F | 187 km |
| 34140 | 10b | 35 to 40°F | 189 km |
| 33050 | 11b | 45 to 50°F | 191 km |
| 34101 | 10b | 35 to 40°F | 193 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 USC00082418, at 24.6278, -82.8736, elevation 1 m (3 ft).
- Data quality: Representative (10+ years), 16 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
- Key W WFO (110 km)
- Key West Intl Airport (114 km)
- Key West NAS (120 km)
- Bahia Honda State Park (161 km)
- Marathon Airport (184 km)
- Marco Island (188 km)
- Curry Hammock State Park (192 km)
- Duck Key (199 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.