Frost dates for 29148Summerton, SC
The average last spring frost in Summerton is March 25 and the average first fall frost is November 11, giving a typical growing season of about 232 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Mar 25
- Average first fall frost
- Nov 11
- Growing season
- 232 days
Safer after Apr 11 (1-in-10 risk)
Possible by Oct 30 (1-in-10 risk)
First frost typically in 8 days
Frost risk by date
NOAA reports frost dates as probabilities. The middle date is the average (a 50% chance). For spring, the 10% date is a safer planting date: frost after it happens in about 1 year in 10. Light frost (36°F) can damage tender plants; a hard freeze (28°F) kills most annuals.
| Temperature | Last spring: 90% / 50% / 10% chance | First fall: 10% / 50% / 90% chance | Growing season (50%) | Years with at least one |
|---|---|---|---|---|
| Light frost (36°F) | Mar 18 · Apr 4 · Apr 20 | Oct 19 · Nov 1 · Nov 16 | 208 days | 100% |
| Frost / freeze (32°F) | Mar 1 · Mar 25 · Apr 11 | Oct 30 · Nov 11 · Dec 1 | 232 days | 100% |
| Hard freeze (28°F) | Feb 14 · Mar 9 · Mar 29 | Nov 7 · Nov 24 · Dec 20 | 262 days | 100% |
Planting calendar for Summerton
Planting windows from the University of Maryland Extension calendar, shifted to your average frost dates. Use them as a starting point and adjust for seed packet instructions and local conditions.
| Crop | Task | Window |
|---|---|---|
| Tomatoes | Start seeds indoors | Feb 22 – Apr 30 |
| Tomatoes | Transplant outdoors | Apr 10 – Jul 22 |
| Peppers | Start seeds indoors | Feb 22 – Mar 25 |
| Peppers | Transplant outdoors | Apr 24 – May 25 |
| Eggplant | Start seeds indoors | Mar 11 – Apr 9 |
| Eggplant | Transplant outdoors | Apr 24 – May 25 |
| Cucumbers | Sow outdoors | Apr 24 – Aug 1 |
| Summer squash | Sow outdoors | Apr 10 – May 25 |
| Winter squash & pumpkins | Sow outdoors | Apr 24 – May 25 |
| Snap beans | Sow outdoors | Apr 10 – Aug 24 |
| Sweet corn | Sow outdoors | Apr 10 – Jul 22 |
| Watermelon & cantaloupe | Sow outdoors | Apr 24 – May 25 |
| Okra | Sow outdoors | Apr 17 – May 10 |
| Peas | Sow outdoors (spring) | Feb 22 – Apr 9 |
| Potatoes | Plant outdoors (spring) | Feb 22 – Apr 24 |
| Onions | Start seeds indoors (spring) | Jan 11 – Feb 7 |
| Onions | Transplant outdoors (spring) | Mar 11 – Apr 9 |
| Broccoli | Start seeds indoors (spring) | Feb 4 – Mar 10 |
| Broccoli | Transplant outdoors (spring) | Mar 11 – Apr 9 |
| Broccoli | Start seeds indoors (fall) | Jul 12 – Jul 22 |
| Broccoli | Transplant outdoors (fall) | Aug 11 – Aug 22 |
| Cabbage | Start seeds indoors (spring) | Jan 25 – Feb 22 |
| Cabbage | Transplant outdoors (spring) | Feb 22 – Mar 25 |
| Cabbage | Start seeds indoors (fall) | Jul 2 – Aug 1 |
| Cabbage | Transplant outdoors (fall) | Aug 1 – Sep 1 |
| Leaf lettuce | Sow outdoors (spring) | Feb 22 – May 10 |
| Leaf lettuce | Sow outdoors (fall) | Aug 1 – Sep 17 |
| Spinach | Sow outdoors (spring) | Feb 15 – Mar 31 |
| Spinach | Sow outdoors (fall) | Aug 18 – Sep 22 |
| Radishes | Sow outdoors (spring) | Feb 22 – Apr 14 |
| Radishes | Sow outdoors (fall) | Aug 1 – Oct 2 |
| Kale | Sow outdoors (spring) | Mar 11 – Mar 31 |
| Kale | Sow outdoors (fall) | Jul 25 – Sep 1 |
| Carrots | Sow outdoors (spring) | Mar 25 – May 10 |
| Carrots | Sow outdoors (fall) | Jul 2 – Aug 17 |
| Garlic | Plant outdoors (fall) | Nov 1 – Dec 2 |
Where these dates come from
ZIP code 29148 is matched to the NOAA station Manning, SC, 18.9 km away, at 85 ft elevation (50 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Manning, SC (used) | 85 ft | Mar 25 | Nov 11 |
| Holly Hill 1 Sw, SC | 95 ft | Mar 22 | Nov 12 |
| Wedgefield, SC | 250 ft | Mar 21 | Nov 13 |
| Sumter, SC | 177 ft | Mar 24 | Nov 7 |
Frost dates near Summerton
- Davis Station, SC 29041 · last Mar 25, first Nov 11
- Manning, SC 29102 · last Mar 25, first Nov 11
- Santee, SC 29142 · last Mar 22, first Nov 12
- Elloree, SC 29047 · last Mar 15, first Nov 19
- Vance, SC 29163 · last Mar 22, first Nov 12
- Pinewood, SC 29125 · last Mar 21, first Nov 13
- Eutawville, SC 29048 · last Mar 22, first Nov 12
- Alcolu, SC 29001 · last Mar 25, first Nov 11
Frequently asked questions
- When is the last frost in Summerton, SC?
- For ZIP code 29148, the average last spring frost (32°F) is March 25, based on NOAA 1991-2020 climate normals for the Manning, SC weather station. There is a 1-in-10 chance of a frost after April 11.
- When is the first frost in Summerton, SC?
- The average first fall frost (32°F) is November 11. There is a 1-in-10 chance of frost by October 30, so tender plants are at risk from that point on.
- How long is the growing season in 29148?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 232 days long.
- Are these frost dates a forecast?
- No. They are 30-year averages and probabilities from NOAA weather station records. Use them to plan, then watch your local forecast before planting tender crops or leaving them uncovered.