Frost dates for Mount Plymouth 1SSW, FL
At Mount Plymouth 1SSW, the median last spring frost (32°F) is Feb 24 and the median first fall frost is Dec 29, for a typical growing season of 301 days. For a 90% chance that the last frost has passed, wait until Mar 20. Nearby ZIP codes are in USDA hardiness zone 9b.
- Feb 24Last spring frost (median)50% chance of 32°F after this date
- Mar 20Safer planting date10% chance of 32°F after this date
- Dec 29First fall frost (median)50% chance of 32°F by this date
- 301 daysGrowing season (median)between 32°F freezes
USDA hardiness zone 9b (25 to 30°F) · see all zone 9b frost dates
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 12 | Mar 12 | Mar 31 |
| 32°F | Jan 22 | Feb 24 | Mar 20 |
| 28°F | Jan 5 | Feb 3 | Mar 6 |
| 24°F | Jan 2 | Jan 28 | Feb 17 |
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 7 | Jan 6 |
| 32°F | Nov 29 | Dec 29 | Jan 27 |
| 28°F | Dec 12 | Jan 10 | Feb 9 |
| 24°F | Dec 27 | Jan 18 | Feb 12 |
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 | 238 days | 273 days | 306 days |
| 32°F | 266 days | 301 days | 335 days |
| 28°F | 295 days | 332 days | 365 days |
| 24°F | 329 days | 365 days | 365 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 98% |
| 28°F | 80% |
| 24°F | 42% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 32776 | 9b | 25 to 30°F | 5 km |
| 32712 | 9b | 25 to 30°F | 7 km |
| 32757 | 9b | 25 to 30°F | 10 km |
| 32798 | 9b | 25 to 30°F | 10 km |
| 32768 | 9b | 25 to 30°F | 12 km |
| 32736 | 9b | 25 to 30°F | 14 km |
| 32779 | 9b | 25 to 30°F | 14 km |
| 32703 | 9b | 25 to 30°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 USC00087228, at 28.7992, -81.5372, elevation 27 m (90 ft).
- Data quality: Representative (10+ years), 11 years of freeze data.
- Average days per year at or below 32°F: 13.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Sanford (25 km)
- Lisbon (25 km)
- Leesburg Muni Airport (27 km)
- Orlando Sanford Airport (29 km)
- Orlando W (32 km)
- Deland 1 SSE (33 km)
- Orlando Executive Airport (35 km)
- Clermont 9 S (42 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.