Frost dates for 29453Jamestown, SC
The average last spring frost in Jamestown is March 22 and the average first fall frost is November 13, giving a typical growing season of about 238 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Mar 22
- Average first fall frost
- Nov 13
- Growing season
- 238 days
Safer after Apr 8 (1-in-10 risk)
Possible by Nov 1 (1-in-10 risk)
First frost typically in 10 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 16 · Apr 3 · Apr 19 | Oct 22 · Nov 3 · Nov 20 | 215 days | 100% |
| Frost / freeze (32°F) | Feb 28 · Mar 22 · Apr 8 | Nov 1 · Nov 13 · Dec 4 | 238 days | 100% |
| Hard freeze (28°F) | Feb 5 · Mar 6 · Mar 27 | Nov 9 · Nov 28 · Dec 28 | 269 days | 100% |
Planting calendar for Jamestown
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 19 – Apr 27 |
| Tomatoes | Transplant outdoors | Apr 7 – Jul 24 |
| Peppers | Start seeds indoors | Feb 19 – Mar 22 |
| Peppers | Transplant outdoors | Apr 21 – May 22 |
| Eggplant | Start seeds indoors | Mar 8 – Apr 6 |
| Eggplant | Transplant outdoors | Apr 21 – May 22 |
| Cucumbers | Sow outdoors | Apr 21 – Aug 3 |
| Summer squash | Sow outdoors | Apr 7 – May 22 |
| Winter squash & pumpkins | Sow outdoors | Apr 21 – May 22 |
| Snap beans | Sow outdoors | Apr 7 – Aug 26 |
| Sweet corn | Sow outdoors | Apr 7 – Jul 24 |
| Watermelon & cantaloupe | Sow outdoors | Apr 21 – May 22 |
| Okra | Sow outdoors | Apr 14 – May 7 |
| Peas | Sow outdoors (spring) | Feb 19 – Apr 6 |
| Potatoes | Plant outdoors (spring) | Feb 19 – Apr 21 |
| Onions | Start seeds indoors (spring) | Jan 8 – Feb 4 |
| Onions | Transplant outdoors (spring) | Mar 8 – Apr 6 |
| Broccoli | Start seeds indoors (spring) | Feb 1 – Mar 7 |
| Broccoli | Transplant outdoors (spring) | Mar 8 – Apr 6 |
| Broccoli | Start seeds indoors (fall) | Jul 14 – Jul 24 |
| Broccoli | Transplant outdoors (fall) | Aug 13 – Aug 24 |
| Cabbage | Start seeds indoors (spring) | Jan 22 – Feb 19 |
| Cabbage | Transplant outdoors (spring) | Feb 19 – Mar 22 |
| Cabbage | Start seeds indoors (fall) | Jul 4 – Aug 3 |
| Cabbage | Transplant outdoors (fall) | Aug 3 – Sep 3 |
| Leaf lettuce | Sow outdoors (spring) | Feb 19 – May 7 |
| Leaf lettuce | Sow outdoors (fall) | Aug 3 – Sep 19 |
| Spinach | Sow outdoors (spring) | Feb 12 – Mar 28 |
| Spinach | Sow outdoors (fall) | Aug 20 – Sep 24 |
| Radishes | Sow outdoors (spring) | Feb 19 – Apr 11 |
| Radishes | Sow outdoors (fall) | Aug 3 – Oct 4 |
| Kale | Sow outdoors (spring) | Mar 8 – Mar 28 |
| Kale | Sow outdoors (fall) | Jul 27 – Sep 3 |
| Carrots | Sow outdoors (spring) | Mar 22 – May 7 |
| Carrots | Sow outdoors (fall) | Jul 4 – Aug 19 |
| Garlic | Plant outdoors (fall) | Nov 3 – Dec 4 |
Where these dates come from
ZIP code 29453 is matched to the NOAA station Jamestown, SC, 9.4 km away, at 35 ft elevation (2 ft higher than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Jamestown, SC (used) | 35 ft | Mar 22 | Nov 13 |
| Mcclellanville, SC | 12 ft | Mar 17 | Nov 21 |
| Andrews, SC | 35 ft | Mar 23 | Nov 13 |
| Mcclellanville 7 Ne, SC | 9 ft | Feb 28 | Dec 1 |
Frost dates near Jamestown
- Mc Clellanville, SC 29458 · last Feb 28, first Dec 1
- Bonneau, SC 29431 · last Mar 10, first Nov 26
- Awendaw, SC 29429 · last Feb 28, first Dec 1
- Huger, SC 29450 · last Mar 7, first Nov 27
- Cordesville, SC 29434 · last Mar 10, first Nov 26
- Andrews, SC 29510 · last Mar 23, first Nov 13
- Saint Stephen, SC 29479 · last Mar 10, first Nov 26
- Charleston, SC 29492 · last Mar 7, first Nov 27
Frequently asked questions
- When is the last frost in Jamestown, SC?
- For ZIP code 29453, the average last spring frost (32°F) is March 22, based on NOAA 1991-2020 climate normals for the Jamestown, SC weather station. There is a 1-in-10 chance of a frost after April 8.
- When is the first frost in Jamestown, SC?
- The average first fall frost (32°F) is November 13. There is a 1-in-10 chance of frost by November 1, so tender plants are at risk from that point on.
- How long is the growing season in 29453?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 238 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.