Frost Dates for Port Chester, NY
In Port Chester, NY, the average last spring frost is around Apr 12 and the average first fall frost around Oct 31, for a growing season of about 200 days. For frost-tender plants, wait until Apr 27, when the chance of frost drops to 10%.
Based on NOAA 1991–2020 records from the Westchester Co Airport, NY weather station, 5 miles away, elevation 379 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 27 | Oct 15 |
| 20% | Apr 21 | Oct 21 |
| 30% | Apr 18 | Oct 24 |
| 40% | Apr 15 | Oct 28 |
| 50% | Apr 12 | Oct 31 |
| 60% | Apr 10 | Nov 2 |
| 70% | Apr 7 | Nov 5 |
| 80% | Apr 5 | Nov 9 |
| 90% | Apr 1 | Nov 14 |
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 26 | Oct 18 |
| Frost / freeze (32°F) | Apr 12 | Oct 31 |
| Hard freeze (28°F) | Apr 1 | Nov 13 |
Planting calendar for Port Chester
Transplant Apr 19 – May 3
Transplant Apr 26 – May 10
Transplant Apr 26 – May 10
Transplant Apr 19 – May 3
Sow or transplant Apr 19 – May 3
Sow or transplant Apr 19 – May 3
Sow or transplant Apr 26 – May 10
Sow or transplant Mar 15 – Mar 29
Fall sowing Sep 5 – Oct 3
Fall sowing Sep 5 – Sep 26
Fall sowing Aug 22 – Sep 5
Sow or transplant Mar 15 – Mar 29
Fall sowing Aug 22 – Sep 19
Transplant Mar 29 – Apr 12
Fall sowing Aug 8 – Aug 22
Transplant Mar 22 – Apr 5
Fall sowing Aug 8 – Aug 22
Fall sowing Aug 8 – Aug 22
Fall sowing Sep 19 – Oct 10
Fall sowing Aug 22 – Sep 5
Plant Mar 15 – Mar 29
Based on the average last frost (Apr 12) and first frost (Oct 31). The dashed lines mark those dates. Seed packets list days to maturity; adjust for your varieties.