Last spring frost
Mar 22
Frost Dates for Santee, SC
First fall frost
Nov 12
Growing season
237 days
Hardiness zone
8b
In an average year around Santee, SC, the last spring frost (32°F) is about Mar 22 and the first fall frost is about Nov 12, giving roughly a 237-day growing season. To be safe most years, wait until Feb 28 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 19 | Apr 4 | Mar 18 |
| Freeze (32°F) | Apr 6 | Mar 22 | Feb 28 |
| Hard (28°F) | Mar 27 | Mar 6 | Feb 6 |
| Severe (24°F) | Mar 14 | Feb 13 | Jan 15 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Apr 19 | Apr 14 | Apr 11 | Apr 7 | Apr 4 | Apr 1 | Mar 29 | Mar 24 | Mar 18 |
| 32°F | Apr 6 | Apr 1 | Mar 30 | Mar 26 | Mar 22 | Mar 18 | Mar 14 | Mar 8 | Feb 28 |
| 28°F | Mar 27 | Mar 20 | Mar 16 | Mar 11 | Mar 6 | Mar 2 | Feb 25 | Feb 18 | Feb 6 |
| 24°F | Mar 14 | Mar 6 | Mar 1 | Feb 22 | Feb 13 | Feb 6 | Feb 1 | Jan 27 | Jan 15 |
| 20°F | Mar 1 | Feb 19 | Feb 9 | Feb 2 | Jan 29 | Jan 24 | Jan 17 | Jan 11 | Dec 31 |
| 16°F | Feb 14 | Feb 2 | Jan 30 | Jan 27 | Jan 21 | Jan 16 | Jan 11 | Jan 5 | Dec 30 |
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 12 | Dec 2 |
| Hard (28°F) | Nov 8 | Nov 26 | Dec 24 |
| Severe (24°F) | Nov 21 | Dec 17 | Jan 16 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Oct 22 | Oct 26 | Oct 30 | Nov 1 | Nov 3 | Nov 5 | Nov 8 | Nov 12 | Nov 18 |
| 32°F | Oct 31 | Nov 3 | Nov 6 | Nov 9 | Nov 12 | Nov 16 | Nov 19 | Nov 25 | Dec 2 |
| 28°F | Nov 8 | Nov 14 | Nov 17 | Nov 21 | Nov 26 | Dec 1 | Dec 4 | Dec 12 | Dec 24 |
| 24°F | Nov 21 | Nov 28 | Dec 4 | Dec 10 | Dec 17 | Dec 23 | Dec 31 | Jan 6 | Jan 16 |
| 20°F | Dec 6 | Dec 16 | Dec 25 | Dec 31 | Jan 4 | Jan 9 | Jan 15 | Jan 25 | Feb 5 |
| 16°F | Dec 20 | Dec 30 | Jan 2 | Jan 6 | Jan 11 | Jan 15 | Jan 23 | Jan 29 | Feb 5 |
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: Holly Hill 1 Sw, Sc, about 11.9 miles away@if(!empty($station['elevation_ft'])), at 95 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 Santee, SC?
On average, the last spring frost (32°F) around Santee, SC is about Mar 22. In cooler years it can run later, so for a safer bet many gardeners wait until Feb 28.
When is the first frost in the fall?
The first fall frost around Santee, SC typically arrives about Nov 12. 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 22 on average, or Feb 28 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 237 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 29142 Planting calendar → South Carolina frost dates →
Data source: NOAA 1991–2020 Climate Normals · Page updated Aug 4, 2026