Frost Dates for Mount Pleasant, SC
In Mount Pleasant, SC, the average last spring frost is around Mar 13 and the average first fall frost around Nov 30, for a growing season of about 262 days. For frost-tender plants, wait until Mar 30, when the chance of frost drops to 10%.
Based on NOAA 1991–2020 records from the Sullivans Is, SC weather station, 3 miles away, elevation 5 ft. Frost can come earlier in low spots and valleys and later near cities and large lakes.
Frost probability by date
Chance of a 32°F frost after the spring date, or before the fall date.
| Chance | Last spring frost | First fall frost |
|---|---|---|
| 10% | Mar 30 | Nov 11 |
| 20% | Mar 25 | Nov 17 |
| 30% | Mar 21 | Nov 21 |
| 40% | Mar 17 | Nov 26 |
| 50% | Mar 13 | Nov 30 |
| 60% | Mar 9 | Dec 2 |
| 70% | Mar 4 | Dec 8 |
| 80% | Feb 28 | Dec 14 |
| 90% | Feb 19 | Dec 24 |
Light frost vs. hard freeze
Average (50%) dates for each temperature. Tender plants are damaged at 36°F; most hardy crops survive until 28°F.
| Temperature | Last in spring | First in fall |
|---|---|---|
| Light frost (36°F) | Mar 25 | Nov 16 |
| Frost / freeze (32°F) | Mar 13 | Nov 30 |
| Hard freeze (28°F) | Mar 1 | Dec 16 |
Planting calendar for Mount Pleasant
Transplant Mar 20 – Apr 3
Transplant Mar 27 – Apr 10
Transplant Mar 27 – Apr 10
Transplant Mar 20 – Apr 3
Sow or transplant Mar 20 – Apr 3
Sow or transplant Mar 20 – Apr 3
Sow or transplant Mar 27 – Apr 10
Sow or transplant Feb 13 – Feb 27
Fall sowing Oct 5 – Nov 2
Fall sowing Oct 5 – Oct 26
Fall sowing Sep 21 – Oct 5
Sow or transplant Feb 13 – Feb 27
Fall sowing Sep 21 – Oct 19
Transplant Feb 27 – Mar 13
Fall sowing Sep 7 – Sep 21
Transplant Feb 20 – Mar 6
Fall sowing Sep 7 – Sep 21
Fall sowing Sep 7 – Sep 21
Fall sowing Oct 19 – Nov 9
Fall sowing Sep 21 – Oct 5
Plant Feb 13 – Feb 27
Based on the average last frost (Mar 13) and first frost (Nov 30). The dashed lines mark those dates. Seed packets list days to maturity; adjust for your varieties.