Frost dates for Sapelo Island, GA
At Sapelo Island, the median last spring frost (32°F) is Feb 20 and the median first fall frost is Dec 19, for a typical growing season of 298 days. For a 90% chance that the last frost has passed, wait until Mar 16. Nearby ZIP codes are in USDA hardiness zone 9a.
- Feb 20Last spring frost (median)50% chance of 32°F after this date
- Mar 16Safer planting date10% chance of 32°F after this date
- Dec 19First fall frost (median)50% chance of 32°F by this date
- 298 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 12 | Mar 6 | Mar 27 |
| 32°F | Jan 25 | Feb 20 | Mar 16 |
| 28°F | Jan 2 | Feb 3 | Mar 3 |
| 24°F | Dec 25 | Jan 23 | Feb 18 |
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 7 | Nov 29 | Dec 25 |
| 32°F | Nov 23 | Dec 19 | Jan 15 |
| 28°F | Dec 6 | Jan 3 | Feb 4 |
| 24°F | Dec 18 | Jan 13 | Feb 11 |
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 | 239 days | 268 days | 298 days |
| 32°F | 266 days | 298 days | 332 days |
| 28°F | 294 days | 329 days | 365 days |
| 24°F | 317 days | 363 days | 365 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 99% |
| 28°F | 85% |
| 24°F | 50% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 31327 | 9a | 20 to 25°F | 3 km |
| 31305 | 9a | 20 to 25°F | 10 km |
| 31331 | 9a | 20 to 25°F | 17 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 USC00097808, at 31.3981, -81.2808, elevation 3 m (10 ft).
- Data quality: Representative (10+ years), 25 years of freeze data.
- Average days per year at or below 32°F: 12.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Brunswick Malcolm McKinnon Airport (29 km)
- Brunswick (33 km)
- Jesup 8 S (57 km)
- Fort Stewart (62 km)
- Nahunta 6ne (62 km)
- Woodbine (63 km)
- Brunswick 23 S (68 km)
- Savannah Intl Airport (82 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.