Frost dates for 29516Blenheim, SC
The average last spring frost in Blenheim is March 26 and the average first fall frost is November 8, giving a typical growing season of about 228 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Mar 26
- Average first fall frost
- Nov 8
- Growing season
- 228 days
Safer after Apr 12 (1-in-10 risk)
Possible by Oct 26 (1-in-10 risk)
First frost typically in 5 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 20 · Apr 5 · Apr 20 | Oct 18 · Oct 30 · Nov 12 | 207 days | 100% |
| Frost / freeze (32°F) | Mar 9 · Mar 26 · Apr 12 | Oct 26 · Nov 8 · Nov 27 | 228 days | 100% |
| Hard freeze (28°F) | Feb 18 · Mar 12 · Apr 1 | Nov 4 · Nov 21 · Dec 14 | 255 days | 100% |
Planting calendar for Blenheim
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 23 – May 1 |
| Tomatoes | Transplant outdoors | Apr 11 – Jul 19 |
| Peppers | Start seeds indoors | Feb 23 – Mar 26 |
| Peppers | Transplant outdoors | Apr 25 – May 26 |
| Eggplant | Start seeds indoors | Mar 12 – Apr 10 |
| Eggplant | Transplant outdoors | Apr 25 – May 26 |
| Cucumbers | Sow outdoors | Apr 25 – Jul 29 |
| Summer squash | Sow outdoors | Apr 11 – May 26 |
| Winter squash & pumpkins | Sow outdoors | Apr 25 – May 26 |
| Snap beans | Sow outdoors | Apr 11 – Aug 21 |
| Sweet corn | Sow outdoors | Apr 11 – Jul 19 |
| Watermelon & cantaloupe | Sow outdoors | Apr 25 – May 26 |
| Okra | Sow outdoors | Apr 18 – May 11 |
| Peas | Sow outdoors (spring) | Feb 23 – Apr 10 |
| Potatoes | Plant outdoors (spring) | Feb 23 – Apr 25 |
| Onions | Start seeds indoors (spring) | Jan 12 – Feb 8 |
| Onions | Transplant outdoors (spring) | Mar 12 – Apr 10 |
| Broccoli | Start seeds indoors (spring) | Feb 5 – Mar 11 |
| Broccoli | Transplant outdoors (spring) | Mar 12 – Apr 10 |
| Broccoli | Start seeds indoors (fall) | Jul 9 – Jul 19 |
| Broccoli | Transplant outdoors (fall) | Aug 8 – Aug 19 |
| Cabbage | Start seeds indoors (spring) | Jan 26 – Feb 23 |
| Cabbage | Transplant outdoors (spring) | Feb 23 – Mar 26 |
| Cabbage | Start seeds indoors (fall) | Jun 29 – Jul 29 |
| Cabbage | Transplant outdoors (fall) | Jul 29 – Aug 29 |
| Leaf lettuce | Sow outdoors (spring) | Feb 23 – May 11 |
| Leaf lettuce | Sow outdoors (fall) | Jul 29 – Sep 14 |
| Spinach | Sow outdoors (spring) | Feb 16 – Apr 1 |
| Spinach | Sow outdoors (fall) | Aug 15 – Sep 19 |
| Radishes | Sow outdoors (spring) | Feb 23 – Apr 15 |
| Radishes | Sow outdoors (fall) | Jul 29 – Sep 29 |
| Kale | Sow outdoors (spring) | Mar 12 – Apr 1 |
| Kale | Sow outdoors (fall) | Jul 22 – Aug 29 |
| Carrots | Sow outdoors (spring) | Mar 26 – May 11 |
| Carrots | Sow outdoors (fall) | Jun 29 – Aug 14 |
| Garlic | Plant outdoors (fall) | Oct 29 – Nov 29 |
Where these dates come from
ZIP code 29516 is matched to the NOAA station Mccoll 3 Nnw, SC, 22.1 km away, at 190 ft elevation (98 ft higher than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Mccoll 3 Nnw, SC (used) | 190 ft | Mar 26 | Nov 8 |
| Florence 8 Ne, SC | 120 ft | Mar 22 | Nov 10 |
| Dillon, SC | 118 ft | Mar 28 | Nov 8 |
| Cheraw, SC | 150 ft | Mar 26 | Nov 9 |
Frost dates near Blenheim
- Clio, SC 29525 · last Mar 26, first Nov 8
- Bennettsville, SC 29512 · last Mar 26, first Nov 8
- Tatum, SC 29594 · last Mar 26, first Nov 8
- Mc Coll, SC 29570 · last Mar 26, first Nov 8
- Little Rock, SC 29567 · last Mar 28, first Nov 8
- Society Hill, SC 29593 · last Mar 30, first Nov 6
- Darlington, SC 29540 · last Mar 30, first Nov 6
- Gibson, NC 28343 · last Mar 26, first Nov 8
Frequently asked questions
- When is the last frost in Blenheim, SC?
- For ZIP code 29516, the average last spring frost (32°F) is March 26, based on NOAA 1991-2020 climate normals for the Mccoll 3 Nnw, SC weather station. There is a 1-in-10 chance of a frost after April 12.
- When is the first frost in Blenheim, SC?
- The average first fall frost (32°F) is November 8. There is a 1-in-10 chance of frost by October 26, so tender plants are at risk from that point on.
- How long is the growing season in 29516?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 228 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.