Frost dates for Ortona Lock 2, FL
At Ortona Lock 2, the median last spring frost (32°F) is Jan 27 and the median first fall frost is Jan 11, for a typical growing season of 348 days. For a 90% chance that the last frost has passed, wait until Feb 27. Nearby ZIP codes are in USDA hardiness zones 9b to 10a.
- Jan 27Last spring frost (median)50% chance of 32°F after this date
- Feb 27Safer planting date10% chance of 32°F after this date
- Jan 11First fall frost (median)50% chance of 32°F by this date
- 348 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 12 | Feb 10 | Mar 12 |
| 32°F | Jan 1 | Jan 27 | Feb 27 |
| 28°F | Dec 30 | Jan 16 | 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 | Dec 4 | Jan 1 | Jan 29 |
| 32°F | Dec 18 | Jan 11 | Feb 10 |
| 28°F | Dec 26 | Jan 11 | Feb 9 |
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 | 285 days | 319 days | 353 days |
| 32°F | 309 days | 348 days | 365 days |
| 28°F | 342 days | 365 days | 365 days |
| 24°F | 365 days | 365 days | 365 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 95% |
| 32°F | 69% |
| 28°F | 26% |
| 24°F | 4% |
Closest ZIP codes (each is closer to another station)
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 33935 | 10a | 30 to 35°F | 12 km |
| 33471 | 10a | 30 to 35°F | 18 km |
| 33944 | 9b | 25 to 30°F | 23 km |
| 33930 | 10a | 30 to 35°F | 27 km |
| 33936 | 10a | 30 to 35°F | 32 km |
| 33920 | 10a | 30 to 35°F | 33 km |
| 33960 | 9b | 25 to 30°F | 34 km |
| 33972 | 10a | 30 to 35°F | 35 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 USC00086657, at 26.7897, -81.3045, elevation 6 m (20 ft).
- Data quality: Representative (10+ years), 16 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
- La Belle (13 km)
- Moore Haven Lock 1 (22 km)
- Devils Garden (25 km)
- Clewiston #2 (26 km)
- Brighton Rsvn (37 km)
- Immokalee (39 km)
- Sebring 23 SSE (41 km)
- Archbold Bio Station (44 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.