Frost Dates for Rockville Centre, NY
In Rockville Centre, NY, the average last spring frost is around Apr 7 and the average first fall frost around Nov 8, for a growing season of about 212 days. For frost-tender plants, wait until Apr 26, when the chance of frost drops to 10%.
Based on NOAA 1991–2020 records from the Oceanside, NY weather station, 2 miles away, elevation 12 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 26 | Oct 27 |
| 20% | Apr 19 | Nov 1 |
| 30% | Apr 15 | Nov 3 |
| 40% | Apr 11 | Nov 6 |
| 50% | Apr 7 | Nov 8 |
| 60% | Apr 4 | Nov 11 |
| 70% | Apr 2 | Nov 14 |
| 80% | Mar 30 | Nov 18 |
| 90% | Mar 24 | 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 22 | Oct 29 |
| Frost / freeze (32°F) | Apr 7 | Nov 8 |
| Hard freeze (28°F) | Mar 27 | Nov 21 |
Planting calendar for Rockville Centre
Transplant Apr 14 – Apr 28
Transplant Apr 21 – May 5
Transplant Apr 21 – May 5
Transplant Apr 14 – Apr 28
Sow or transplant Apr 14 – Apr 28
Sow or transplant Apr 14 – Apr 28
Sow or transplant Apr 21 – May 5
Sow or transplant Mar 10 – Mar 24
Fall sowing Sep 13 – Oct 11
Fall sowing Sep 13 – Oct 4
Fall sowing Aug 30 – Sep 13
Sow or transplant Mar 10 – Mar 24
Fall sowing Aug 30 – Sep 27
Transplant Mar 24 – Apr 7
Fall sowing Aug 16 – Aug 30
Transplant Mar 17 – Mar 31
Fall sowing Aug 16 – Aug 30
Fall sowing Aug 16 – Aug 30
Fall sowing Sep 27 – Oct 18
Fall sowing Aug 30 – Sep 13
Plant Mar 10 – Mar 24
Based on the average last frost (Apr 7) and first frost (Nov 8). The dashed lines mark those dates. Seed packets list days to maturity; adjust for your varieties.