Frost Dates for Rock Hill, SC
In Rock Hill, SC, the average last spring frost is around Mar 27 and the average first fall frost around Nov 5, for a growing season of about 225 days. For frost-tender plants, wait until Apr 11, when the chance of frost drops to 10%.
Based on NOAA 1991–2020 records from the Winthrop Univ, SC weather station, under 1 mile away, elevation 650 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% | Apr 11 | Oct 24 |
| 20% | Apr 5 | Oct 27 |
| 30% | Apr 2 | Oct 31 |
| 40% | Mar 30 | Nov 2 |
| 50% | Mar 27 | Nov 5 |
| 60% | Mar 24 | Nov 8 |
| 70% | Mar 20 | Nov 11 |
| 80% | Mar 17 | Nov 16 |
| 90% | Mar 10 | Nov 23 |
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) | Apr 9 | Oct 27 |
| Frost / freeze (32°F) | Mar 27 | Nov 5 |
| Hard freeze (28°F) | Mar 15 | Nov 18 |
Planting calendar for Rock Hill
Transplant Apr 3 – Apr 17
Transplant Apr 10 – Apr 24
Transplant Apr 10 – Apr 24
Transplant Apr 3 – Apr 17
Sow or transplant Apr 3 – Apr 17
Sow or transplant Apr 3 – Apr 17
Sow or transplant Apr 10 – Apr 24
Sow or transplant Feb 27 – Mar 13
Fall sowing Sep 10 – Oct 8
Fall sowing Sep 10 – Oct 1
Fall sowing Aug 27 – Sep 10
Sow or transplant Feb 27 – Mar 13
Fall sowing Aug 27 – Sep 24
Transplant Mar 13 – Mar 27
Fall sowing Aug 13 – Aug 27
Transplant Mar 6 – Mar 20
Fall sowing Aug 13 – Aug 27
Fall sowing Aug 13 – Aug 27
Fall sowing Sep 24 – Oct 15
Fall sowing Aug 27 – Sep 10
Plant Feb 27 – Mar 13
Based on the average last frost (Mar 27) and first frost (Nov 5). The dashed lines mark those dates. Seed packets list days to maturity; adjust for your varieties.