Last spring frost
Mar 21
Frost Dates for Carolina Forest, SC
First fall frost
Nov 13
Growing season
239 days
Hardiness zone
8b
In an average year around Carolina Forest, SC, the last spring frost (32°F) is about Mar 21 and the first fall frost is about Nov 13, giving roughly a 239-day growing season. To be safe most years, wait until Mar 2 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 18 | Apr 3 | Mar 16 |
| Freeze (32°F) | Apr 7 | Mar 21 | Mar 2 |
| Hard (28°F) | Mar 28 | Mar 7 | Feb 8 |
| Severe (24°F) | Mar 13 | Feb 16 | Jan 19 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Apr 18 | Apr 11 | Apr 8 | Apr 6 | Apr 3 | Mar 31 | Mar 27 | Mar 23 | Mar 16 |
| 32°F | Apr 7 | Apr 2 | Mar 29 | Mar 26 | Mar 21 | Mar 18 | Mar 14 | Mar 9 | Mar 2 |
| 28°F | Mar 28 | Mar 21 | Mar 16 | Mar 12 | Mar 7 | Mar 3 | Feb 27 | Feb 21 | Feb 8 |
| 24°F | Mar 13 | Mar 6 | Feb 28 | Feb 24 | Feb 16 | Feb 9 | Feb 3 | Jan 30 | Jan 19 |
| 20°F | Feb 27 | Feb 17 | Feb 7 | Feb 2 | Jan 30 | Jan 25 | Jan 18 | Jan 11 | Dec 31 |
| 16°F | Feb 13 | Feb 2 | Jan 30 | Jan 25 | Jan 21 | Jan 16 | Jan 11 | Jan 7 | 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 22 | Nov 3 | Nov 18 |
| Freeze (32°F) | Oct 31 | Nov 13 | Dec 3 |
| Hard (28°F) | Nov 7 | Nov 26 | Dec 26 |
| Severe (24°F) | Nov 16 | Dec 16 | Jan 14 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Oct 22 | Oct 27 | Oct 30 | Nov 1 | Nov 3 | Nov 6 | Nov 9 | Nov 12 | Nov 18 |
| 32°F | Oct 31 | Nov 3 | Nov 7 | Nov 10 | Nov 13 | Nov 16 | Nov 19 | Nov 25 | Dec 3 |
| 28°F | Nov 7 | Nov 12 | Nov 17 | Nov 20 | Nov 26 | Dec 1 | Dec 4 | Dec 13 | Dec 26 |
| 24°F | Nov 16 | Nov 24 | Dec 1 | Dec 6 | Dec 16 | Dec 25 | Jan 1 | Jan 6 | Jan 14 |
| 20°F | Dec 1 | Dec 10 | Dec 23 | Dec 30 | Jan 4 | Jan 9 | Jan 16 | Jan 22 | Feb 1 |
| 16°F | Dec 18 | Dec 30 | Jan 3 | Jan 8 | Jan 13 | Jan 18 | Jan 22 | Jan 27 | Feb 3 |
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: Myrtle Beach, Sc, about 5.3 miles away@if(!empty($station['elevation_ft'])), at 39 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 Carolina Forest, SC?
On average, the last spring frost (32°F) around Carolina Forest, SC is about Mar 21. In cooler years it can run later, so for a safer bet many gardeners wait until Mar 2.
When is the first frost in the fall?
The first fall frost around Carolina Forest, SC typically arrives about Nov 13. 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 21 on average, or Mar 2 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 239 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 29579 Planting calendar → South Carolina frost dates →
Data source: NOAA 1991–2020 Climate Normals · Page updated Aug 4, 2026