Frost dates for Glen St. Mary 1 W, FL
At Glen St. Mary 1 W, the median last spring frost (32°F) is Mar 8 and the median first fall frost is Dec 1, for a typical growing season of 272 days. For a 90% chance that the last frost has passed, wait until Mar 31. Nearby ZIP codes are in USDA hardiness zone 9a.
- Mar 8Last spring frost (median)50% chance of 32°F after this date
- Mar 31Safer planting date10% chance of 32°F after this date
- Dec 1First fall frost (median)50% chance of 32°F by this date
- 272 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 27 | Mar 24 | Apr 14 |
| 32°F | Feb 6 | Mar 8 | Mar 31 |
| 28°F | Jan 12 | Feb 17 | Mar 16 |
| 24°F | Dec 31 | Jan 31 | Mar 5 |
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 | Oct 30 | Nov 17 | Dec 6 |
| 32°F | Nov 9 | Dec 1 | Dec 28 |
| 28°F | Nov 23 | Dec 21 | Jan 20 |
| 24°F | Dec 4 | Jan 4 | 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 | 211 days | 239 days | 271 days |
| 32°F | 238 days | 272 days | 309 days |
| 28°F | 270 days | 306 days | 345 days |
| 24°F | 300 days | 338 days | 365 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 100% |
| 28°F | 96% |
| 24°F | 75% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 32040 | 9a | 20 to 25°F | 6 km |
| 32063 | 9a | 20 to 25°F | 6 km |
| 32087 | 9a | 20 to 25°F | 15 km |
| 32083 | 9a | 20 to 25°F | 18 km |
| 31562 | 9a | 20 to 25°F | 24 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 USC00083470, at 30.2717, -82.1856, elevation 39 m (128 ft).
- Data quality: Representative (10+ years), 24 years of freeze data.
- Average days per year at or below 32°F: 28.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Jackson Whitehouse Nolf (30 km)
- Starke (38 km)
- Lake City 2 E (40 km)
- Jacksonville NAS (50 km)
- Jacksonville (52 km)
- White Springs 7n (60 km)
- High Springs (63 km)
- Jacksonville Craig Muni Airport (65 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.