Frost Dates for Cornelius, NC
In Cornelius, NC, the average last spring frost is around Apr 1 and the average first fall frost around Nov 2, for a growing season of about 215 days. For frost-tender plants, wait until Apr 16, when the chance of frost drops to 10%.
Based on NOAA 1991–2020 records from the Concord, NC weather station, 17 miles away, elevation 700 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 16 | Oct 21 |
| 20% | Apr 11 | Oct 25 |
| 30% | Apr 6 | Oct 28 |
| 40% | Apr 3 | Oct 31 |
| 50% | Apr 1 | Nov 2 |
| 60% | Mar 30 | Nov 5 |
| 70% | Mar 26 | Nov 8 |
| 80% | Mar 21 | Nov 12 |
| 90% | Mar 16 | Nov 15 |
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 14 | Oct 24 |
| Frost / freeze (32°F) | Apr 1 | Nov 2 |
| Hard freeze (28°F) | Mar 20 | Nov 13 |
Planting calendar for Cornelius
Transplant Apr 8 – Apr 22
Transplant Apr 15 – Apr 29
Transplant Apr 15 – Apr 29
Transplant Apr 8 – Apr 22
Sow or transplant Apr 8 – Apr 22
Sow or transplant Apr 8 – Apr 22
Sow or transplant Apr 15 – Apr 29
Sow or transplant Mar 4 – Mar 18
Fall sowing Sep 7 – Oct 5
Fall sowing Sep 7 – Sep 28
Fall sowing Aug 24 – Sep 7
Sow or transplant Mar 4 – Mar 18
Fall sowing Aug 24 – Sep 21
Transplant Mar 18 – Apr 1
Fall sowing Aug 10 – Aug 24
Transplant Mar 11 – Mar 25
Fall sowing Aug 10 – Aug 24
Fall sowing Aug 10 – Aug 24
Fall sowing Sep 21 – Oct 12
Fall sowing Aug 24 – Sep 7
Plant Mar 4 – Mar 18
Based on the average last frost (Apr 1) and first frost (Nov 2). The dashed lines mark those dates. Seed packets list days to maturity; adjust for your varieties.