Frost dates for Savannah Intl Airport, GA
At Savannah Intl Airport, the median last spring frost (32°F) is Mar 2 and the median first fall frost is Nov 30, for a typical growing season of 270 days. For a 90% chance that the last frost has passed, wait until Mar 25. Nearby ZIP codes are in USDA hardiness zone 9a.
- Mar 2Last spring frost (median)50% chance of 32°F after this date
- Mar 25Safer planting date10% chance of 32°F after this date
- Nov 30First fall frost (median)50% chance of 32°F by this date
- 270 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 26 | Mar 19 | Apr 6 |
| 32°F | Feb 4 | Mar 2 | Mar 25 |
| 28°F | Jan 15 | Feb 13 | Mar 13 |
| 24°F | Dec 29 | Jan 28 | Feb 28 |
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 1 | Nov 16 | Dec 4 |
| 32°F | Nov 11 | Nov 30 | Dec 28 |
| 28°F | Nov 24 | Dec 22 | Jan 17 |
| 24°F | Dec 7 | Jan 4 | Feb 4 |
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 | 218 days | 242 days | 270 days |
| 32°F | 243 days | 270 days | 304 days |
| 28°F | 267 days | 304 days | 339 days |
| 24°F | 303 days | 338 days | 365 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 100% |
| 28°F | 98% |
| 24°F | 78% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 31408 | 9a | 20 to 25°F | 4 km |
| 31322 | 9a | 20 to 25°F | 5 km |
| 31407 | 9a | 20 to 25°F | 6 km |
| 31415 | 9a | 20 to 25°F | 10 km |
| 31405 | 9a | 20 to 25°F | 10 km |
| 31302 | 9a | 20 to 25°F | 12 km |
| 31401 | 9a | 20 to 25°F | 13 km |
| 31421 | 9a | 20 to 25°F | 13 km |
| 31409 | 9a | 20 to 25°F | 14 km |
| 31318 | 9a | 20 to 25°F | 15 km |
| 31419 | 9a | 20 to 25°F | 16 km |
| 31404 | 9a | 20 to 25°F | 17 km |
| 31307 | 9a | 20 to 25°F | 18 km |
| 31326 | 9a | 20 to 25°F | 19 km |
| 29927 | 9a | 20 to 25°F | 19 km |
| 31406 | 9a | 20 to 25°F | 20 km |
| 31410 | 9a | 20 to 25°F | 25 km |
| 31308 | 9a | 20 to 25°F | 25 km |
| 31411 | 9a | 20 to 25°F | 27 km |
| 31324 | 9a | 20 to 25°F | 32 km |
| 29915 | 9a | 20 to 25°F | 33 km |
| 31328 | 9a | 20 to 25°F | 33 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 USW00003822, at 32.1300, -81.2100, elevation 14 m (46 ft).
- Data quality: Standard (24+ years of data), 29 years of freeze data.
- Average days per year at or below 32°F: 21.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Fort Stewart (49 km)
- Brooklet 1 W (52 km)
- Glennville 3nw (72 km)
- Rocky Ford 4se (77 km)
- Sapelo Island (82 km)
- Metter (85 km)
- Jesup 8 S (93 km)
- Surrency (104 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.