Frost dates for Archbold Bio Station, FL
At Archbold Bio Station, the median last spring frost (32°F) is Feb 26 and the median first fall frost is Dec 22, for a typical growing season of 300 days. For a 90% chance that the last frost has passed, wait until Mar 28. Nearby ZIP codes are in USDA hardiness zones 9b to 10a.
- Feb 26Last spring frost (median)50% chance of 32°F after this date
- Mar 28Safer planting date10% chance of 32°F after this date
- Dec 22First fall frost (median)50% chance of 32°F by this date
- 300 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 11 | Mar 19 | Apr 16 |
| 32°F | Jan 20 | Feb 26 | Mar 28 |
| 28°F | Jan 1 | Feb 4 | Mar 9 |
| 24°F | Dec 31 | Jan 23 | Feb 26 |
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 11 | Dec 3 | Jan 2 |
| 32°F | Nov 27 | Dec 22 | Jan 27 |
| 28°F | Dec 6 | Jan 7 | Feb 8 |
| 24°F | Dec 21 | Jan 13 | Feb 20 |
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 | 227 days | 264 days | 303 days |
| 32°F | 259 days | 300 days | 338 days |
| 28°F | 292 days | 333 days | 365 days |
| 24°F | 318 days | 363 days | 365 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 98% |
| 28°F | 85% |
| 24°F | 53% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 33852 | 9b | 25 to 30°F | 9 km |
| 33857 | 10a | 30 to 35°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 USC00080236, at 27.1819, -81.3508, elevation 43 m (140 ft).
- Data quality: Standard (24+ years of data), 27 years of freeze data.
- Average days per year at or below 32°F: 9.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Sebring 23 SSE (4 km)
- Brighton Rsvn (32 km)
- Ortona Lock 2 (44 km)
- Moore Haven Lock 1 (46 km)
- Okeechobee (48 km)
- La Belle (49 km)
- Avon Park 2 W (49 km)
- Arcadia (52 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.