Last spring frost
Feb 19
Frost Dates for Kings Bay Base, GA
First fall frost
Dec 14
Growing season
299 days
Hardiness zone
9a
In an average year around Kings Bay Base, GA, the last spring frost (32°F) is about Feb 19 and the first fall frost is about Dec 14, giving roughly a 299-day growing season. To be safe most years, wait until Jan 19 before setting out tender plants.
Last spring frost
Dates the last frost of spring typically ends. Plant tender crops after the risk has passed for your comfort level.
| Frost intensity | Early (10%) | Average (50%) | Late (90%) |
|---|---|---|---|
| Light (36°F) | Mar 31 | Mar 5 | Feb 12 |
| Freeze (32°F) | Mar 14 | Feb 19 | Jan 19 |
| Hard (28°F) | Feb 28 | Feb 3 | Dec 31 |
| Severe (24°F) | Feb 15 | Jan 25 | Dec 24 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Mar 31 | Mar 20 | Mar 16 | Mar 11 | Mar 5 | Mar 1 | Feb 26 | Feb 21 | Feb 12 |
| 32°F | Mar 14 | Mar 5 | Feb 28 | Feb 24 | Feb 19 | Feb 13 | Feb 7 | Jan 31 | Jan 19 |
| 28°F | Feb 28 | Feb 20 | Feb 12 | Feb 7 | Feb 3 | Jan 30 | Jan 23 | Jan 13 | Dec 31 |
| 24°F | Feb 15 | Feb 8 | Feb 3 | Jan 31 | Jan 25 | Jan 18 | Jan 13 | Jan 3 | Dec 24 |
First fall frost
Dates the first frost of fall typically arrives. Count back by a crop's days-to-maturity to know your planting cutoff.
| Frost intensity | Early (10%) | Average (50%) | Late (90%) |
|---|---|---|---|
| Light (36°F) | Nov 11 | Nov 29 | Dec 22 |
| Freeze (32°F) | Nov 21 | Dec 14 | Jan 15 |
| Hard (28°F) | Dec 2 | Jan 3 | Feb 7 |
| Severe (24°F) | Dec 11 | Jan 15 | Feb 9 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Nov 11 | Nov 17 | Nov 20 | Nov 24 | Nov 29 | Dec 1 | Dec 6 | Dec 12 | Dec 22 |
| 32°F | Nov 21 | Nov 29 | Dec 3 | Dec 8 | Dec 14 | Dec 22 | Dec 30 | Jan 4 | Jan 15 |
| 28°F | Dec 2 | Dec 11 | Dec 20 | Dec 29 | Jan 3 | Jan 9 | Jan 17 | Jan 26 | Feb 7 |
| 24°F | Dec 11 | Dec 25 | Jan 1 | Jan 8 | Jan 15 | Jan 20 | Jan 26 | Feb 1 | Feb 9 |
Growing season is measured at 32°F with about 50% probability. Hardiness zone from the 2023 USDA map; frost normals from NOAA 1991-2020.
Where this data comes from
@endif These dates are computed from the nearest official weather station with long-term records: Brunswick 23 S, Ga, about 4.6 miles away@if(!empty($station['elevation_ft'])), at 25 ft elevation. The further the station and the greater the elevation difference from your yard, the more your local frost timing can vary.
How we calculate these dates
Frost and freeze dates come from the NOAA 1991–2020 U.S. Climate Normals, the National Oceanic and Atmospheric Administration's 30-year averages for each weather station. A date shown at the 50% level is the median: in half of years the frost falls on or before it. The 10% and 90% columns show the early and late ends of the range, so you can plant on the odds you're comfortable with. These are long-term averages, not a forecast for this year - always check your local outlook before planting.
Source: NOAA National Centers for Environmental Information, 1991–2020 Climate Normals (public domain). Harman is not affiliated with or endorsed by NOAA.
Frequently asked questions
When is the last frost in Kings Bay Base, GA?
On average, the last spring frost (32°F) around Kings Bay Base, GA is about Feb 19. In cooler years it can run later, so for a safer bet many gardeners wait until Jan 19.
When is the first frost in the fall?
The first fall frost around Kings Bay Base, GA typically arrives about Dec 14. Count back by a crop's days to maturity to find the latest date you can plant it.
When can I plant tomatoes and other tender crops?
Tender crops like tomatoes, peppers and basil are damaged by frost, so wait until the last spring frost has passed - around Feb 19 on average, or Jan 19 to be safe most years.
How long is the growing season here?
The frost-free growing season (between the last spring and first fall 32°F frost) is about 299 days in a typical year.
Are these dates a forecast for this year?
No. They are 30-year averages from the NOAA 1991–2020 Climate Normals, not a prediction for the current year. Use them for planning and always check your local weather forecast before planting or protecting crops.
Local weather for 31547 Planting calendar → Georgia frost dates →
Data source: NOAA 1991–2020 Climate Normals · Page updated Aug 4, 2026