Last spring frost
Mar 25
Frost Dates for Stone Mountain, GA
First fall frost
Nov 9
Growing season
228 days
Hardiness zone
8a
In an average year around Stone Mountain, GA, the last spring frost (32°F) is about Mar 25 and the first fall frost is about Nov 9, giving roughly a 228-day growing season. To be safe most years, wait until Mar 5 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) | Apr 22 | Apr 7 | Mar 21 |
| Freeze (32°F) | Apr 12 | Mar 25 | Mar 5 |
| Hard (28°F) | Mar 31 | Mar 12 | Feb 18 |
| Severe (24°F) | Mar 17 | Feb 23 | Jan 26 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Apr 22 | Apr 17 | Apr 14 | Apr 10 | Apr 7 | Apr 4 | Apr 1 | Mar 28 | Mar 21 |
| 32°F | Apr 12 | Apr 5 | Apr 1 | Mar 29 | Mar 25 | Mar 22 | Mar 17 | Mar 12 | Mar 5 |
| 28°F | Mar 31 | Mar 25 | Mar 20 | Mar 16 | Mar 12 | Mar 7 | Mar 2 | Feb 26 | Feb 18 |
| 24°F | Mar 17 | Mar 10 | Mar 5 | Feb 28 | Feb 23 | Feb 17 | Feb 10 | Feb 3 | Jan 26 |
| 20°F | Mar 5 | Feb 26 | Feb 17 | Feb 10 | Feb 3 | Jan 30 | Jan 25 | Jan 16 | Jan 7 |
| 16°F | Feb 23 | Feb 10 | Feb 4 | Jan 31 | Jan 26 | Jan 21 | Jan 16 | Jan 9 | Dec 31 |
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) | Oct 17 | Oct 29 | Nov 12 |
| Freeze (32°F) | Oct 26 | Nov 9 | Nov 27 |
| Hard (28°F) | Nov 4 | Nov 22 | Dec 14 |
| Severe (24°F) | Nov 15 | Dec 7 | Jan 7 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Oct 17 | Oct 21 | Oct 25 | Oct 26 | Oct 29 | Nov 1 | Nov 3 | Nov 7 | Nov 12 |
| 32°F | Oct 26 | Oct 30 | Nov 2 | Nov 5 | Nov 9 | Nov 12 | Nov 16 | Nov 20 | Nov 27 |
| 28°F | Nov 4 | Nov 9 | Nov 14 | Nov 18 | Nov 22 | Nov 26 | Dec 1 | Dec 5 | Dec 14 |
| 24°F | Nov 15 | Nov 22 | Nov 28 | Dec 2 | Dec 7 | Dec 14 | Dec 24 | Dec 30 | Jan 7 |
| 20°F | Dec 1 | Dec 8 | Dec 15 | Dec 24 | Dec 30 | Jan 2 | Jan 8 | Jan 14 | Jan 22 |
| 16°F | Dec 15 | Dec 25 | Dec 31 | Jan 4 | Jan 10 | Jan 15 | Jan 20 | Jan 28 | Feb 6 |
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: Atlanta Peachtree Ap, Ga, about 8.3 miles away@if(!empty($station['elevation_ft'])), at 1,002 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 Stone Mountain, GA?
On average, the last spring frost (32°F) around Stone Mountain, GA is about Mar 25. In cooler years it can run later, so for a safer bet many gardeners wait until Mar 5.
When is the first frost in the fall?
The first fall frost around Stone Mountain, GA typically arrives about Nov 9. 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 Mar 25 on average, or Mar 5 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 228 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 30083 Planting calendar → Georgia frost dates →
Data source: NOAA 1991–2020 Climate Normals · Page updated Aug 4, 2026