Frost dates for Westchester Co Airport, NY
At Westchester Co Airport, the median last spring frost (32°F) is Apr 12 and the median first fall frost is Oct 31, for a typical growing season of 200 days. For a 90% chance that the last frost has passed, wait until Apr 27. Nearby ZIP codes are in USDA hardiness zones 7a to 7b.
- Apr 12Last spring frost (median)50% chance of 32°F after this date
- Apr 27Safer planting date10% chance of 32°F after this date
- Oct 31First fall frost (median)50% chance of 32°F by this date
- 200 daysGrowing season (median)between 32°F freezes
Last spring frost dates
The chance that the temperature drops to the threshold after each date.
| Temperature | 90% chance later | 50% chance later | 10% chance later |
|---|---|---|---|
| 36°F | Apr 13 | Apr 26 | May 11 |
| 32°F | Apr 1 | Apr 12 | Apr 27 |
| 28°F | Mar 18 | Apr 1 | Apr 13 |
| 24°F | Mar 6 | Mar 21 | Apr 3 |
First fall frost dates
The chance that the temperature has dropped to the threshold by each date.
| Temperature | 10% chance by | 50% chance by | 90% chance by |
|---|---|---|---|
| 36°F | Oct 2 | Oct 18 | Nov 2 |
| 32°F | Oct 15 | Oct 31 | Nov 14 |
| 28°F | Oct 29 | Nov 13 | Nov 29 |
| 24°F | Nov 10 | Nov 25 | Dec 10 |
Growing season length
Days between the last spring and first fall freeze, as the length reached in 9, 5 and 1 out of 10 years.
| Temperature | 9 in 10 years at least | 5 in 10 years at least | 1 in 10 years at least |
|---|---|---|---|
| 36°F | 152 days | 174 days | 193 days |
| 32°F | 179 days | 200 days | 219 days |
| 28°F | 204 days | 224 days | 245 days |
| 24°F | 227 days | 247 days | 270 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 100% |
| 28°F | 100% |
| 24°F | 100% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 10577 | 7a | 0 to 5°F | 3 km |
| 10604 | 7a | 0 to 5°F | 3 km |
| 06831 | 7a | 0 to 5°F | 5 km |
| 10601 | 7a | 0 to 5°F | 6 km |
| 10573 | 7b | 5 to 10°F | 6 km |
| 10603 | 7a | 0 to 5°F | 6 km |
| 10595 | 7a | 0 to 5°F | 7 km |
| 10504 | 7a | 0 to 5°F | 7 km |
| 10605 | 7a | 0 to 5°F | 7 km |
| 10594 | 7a | 0 to 5°F | 8 km |
| 06830 | 7a | 0 to 5°F | 8 km |
| 10532 | 7a | 0 to 5°F | 9 km |
| 10570 | 7a | 0 to 5°F | 10 km |
| 10580 | 7b | 5 to 10°F | 10 km |
| 10510 | 7a | 0 to 5°F | 13 km |
Not the official USDA Plant Hardiness Zone Map. Zones shown here are the values published in the USDA-ARS / Oregon State University PRISM Group 2023 ZIP code tables, shown unaltered. For the official interactive map, visit planthardiness.ars.usda.gov.
About this station
- NOAA station ID USW00094745, at 41.0669, -73.7075, elevation 116 m (379 ft).
- Data quality: Standard (24+ years of data), 28 years of freeze data.
- Average days per year at or below 32°F: 105.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Dobbs Ferry-Ardsley (13 km)
- Yorktown Heights 1w (23 km)
- Bronx (28 km)
- Shrub Oak (31 km)
- Centerport (35 km)
- New York Laguardia Airport (35 km)
- Mineola (38 km)
- New York Cntrl Pk Twr (39 km)
Sources
- NOAA National Centers for Environmental Information, U.S. Climate Normals 1991–2020, annual/seasonal normals by station (version 1.0.1), file dated June 27, 2023; documentation.
- USDA Agricultural Research Service and PRISM Group, Oregon State University, 2023 Plant Hardiness Zone Map ZIP code tables (CONUS, Alaska, Hawaii, Puerto Rico), files dated November 17, 2023. Data © PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed November 1, 2026. Official map: planthardiness.ars.usda.gov.
- U.S. Census Bureau, 2024 Gazetteer ZIP Code Tabulation Areas file, dated August 30, 2024 (ZIP centroids used to find the nearest station).
Freeze dates are 30-year probabilities, not forecasts. Check your local forecast before planting tender plants.