Frost dates for Saint Leo, FL
At Saint Leo, the median last spring frost (32°F) is Jan 31 and the median first fall frost is Jan 8, for a typical growing season of 336 days. For a 90% chance that the last frost has passed, wait until Feb 28. Nearby ZIP codes are in USDA hardiness zone 9b.
- Jan 31Last spring frost (median)50% chance of 32°F after this date
- Feb 28Safer planting date10% chance of 32°F after this date
- Jan 8First fall frost (median)50% chance of 32°F by this date
- 336 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 16 | Feb 16 | Mar 15 |
| 32°F | Jan 3 | Jan 31 | Feb 28 |
| 28°F | Dec 27 | Jan 24 | Feb 19 |
| 24°F | Dec 29 | Jan 22 | Feb 7 |
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 28 | Dec 22 | Jan 23 |
| 32°F | Dec 10 | Jan 8 | Feb 10 |
| 28°F | Dec 21 | Jan 14 | Feb 15 |
| 24°F | Dec 26 | Jan 21 | Feb 7 |
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 | 274 days | 306 days | 340 days |
| 32°F | 302 days | 336 days | 365 days |
| 28°F | 326 days | 365 days | 365 days |
| 24°F | 363 days | 365 days | 365 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 98% |
| 32°F | 81% |
| 28°F | 37% |
| 24°F | 10% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 33574 | 9b | 25 to 30°F | 0 km |
| 33576 | 9b | 25 to 30°F | 6 km |
| 33525 | 9b | 25 to 30°F | 8 km |
| 33545 | 9b | 25 to 30°F | 8 km |
| 33523 | 9b | 25 to 30°F | 9 km |
| 33541 | 9b | 25 to 30°F | 12 km |
| 33542 | 9b | 25 to 30°F | 14 km |
| 33544 | 9b | 25 to 30°F | 15 km |
| 33540 | 9b | 25 to 30°F | 15 km |
| 33543 | 9b | 25 to 30°F | 16 km |
| 34639 | 9b | 25 to 30°F | 18 km |
| 33647 | 9b | 25 to 30°F | 21 km |
| 33849 | 9b | 25 to 30°F | 22 km |
| 33559 | 9b | 25 to 30°F | 25 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 USC00087851, at 28.3378, -82.2600, elevation 58 m (190 ft).
- Data quality: Standard (24+ years of data), 30 years of freeze data.
- Average days per year at or below 32°F: 3.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Brooksville Hernando Co Airport (24 km)
- Brooksville Chin Hill (33 km)
- Weeki Wachee (37 km)
- Plant City (37 km)
- Bushnell 1 E (40 km)
- Lakeland 2 (45 km)
- Tampa Intl Airport (50 km)
- Inverness 3 SE (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.