Frost dates for Dobbs Ferry-Ardsley, NY
At Dobbs Ferry-Ardsley, the median last spring frost (32°F) is Apr 20 and the median first fall frost is Oct 26, for a typical growing season of 189 days. For a 90% chance that the last frost has passed, wait until May 6. Nearby ZIP codes are in USDA hardiness zones 7a to 7b.
- Apr 20Last spring frost (median)50% chance of 32°F after this date
- May 6Safer planting date10% chance of 32°F after this date
- Oct 26First fall frost (median)50% chance of 32°F by this date
- 189 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 19 | May 2 | May 18 |
| 32°F | Apr 4 | Apr 20 | May 6 |
| 28°F | Mar 20 | Apr 4 | Apr 20 |
| 24°F | Mar 6 | Mar 22 | Apr 5 |
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 1 | Oct 12 | Oct 31 |
| 32°F | Oct 10 | Oct 26 | Nov 10 |
| 28°F | Oct 23 | Nov 7 | Nov 23 |
| 24°F | Nov 7 | Nov 22 | Dec 8 |
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 | 146 days | 164 days | 185 days |
| 32°F | 168 days | 189 days | 210 days |
| 28°F | 197 days | 217 days | 238 days |
| 24°F | 223 days | 243 days | 266 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 |
|---|---|---|---|
| 10502 | 7a | 0 to 5°F | 1 km |
| 10522 | 7a | 0 to 5°F | 2 km |
| 10530 | 7a | 0 to 5°F | 3 km |
| 10706 | 7a | 0 to 5°F | 3 km |
| 10533 | 7a | 0 to 5°F | 4 km |
| 10607 | 7a | 0 to 5°F | 4 km |
| 10503 | 7a | 0 to 5°F | 4 km |
| 10710 | 7b | 5 to 10°F | 4 km |
| 10583 | 7a | 0 to 5°F | 4 km |
| 10606 | 7a | 0 to 5°F | 5 km |
| 10707 | 7b | 5 to 10°F | 5 km |
| 10523 | 7a | 0 to 5°F | 6 km |
| 10709 | 7b | 5 to 10°F | 6 km |
| 10703 | 7a | 0 to 5°F | 7 km |
| 10964 | 7a | 0 to 5°F | 7 km |
| 10708 | 7b | 5 to 10°F | 8 km |
| 10701 | 7b | 5 to 10°F | 8 km |
| 10804 | 7b | 5 to 10°F | 8 km |
| 10968 | 7a | 0 to 5°F | 8 km |
| 10976 | 7a | 0 to 5°F | 8 km |
| 07620 | 7a | 0 to 5°F | 8 km |
| 10591 | 7a | 0 to 5°F | 8 km |
| 07647 | 7a | 0 to 5°F | 9 km |
| 10552 | 7b | 5 to 10°F | 9 km |
| 10528 | 7b | 5 to 10°F | 10 km |
| 10983 | 7a | 0 to 5°F | 10 km |
| 07648 | 7a | 0 to 5°F | 10 km |
| 10538 | 7b | 5 to 10°F | 10 km |
| 10543 | 7b | 5 to 10°F | 10 km |
| 07624 | 7a | 0 to 5°F | 11 km |
| 10962 | 7a | 0 to 5°F | 12 km |
| 07627 | 7b | 5 to 10°F | 12 km |
| 10960 | 7a | 0 to 5°F | 12 km |
| 10913 | 7a | 0 to 5°F | 12 km |
| 07640 | 7a | 0 to 5°F | 12 km |
| 07626 | 7a | 0 to 5°F | 13 km |
| 07675 | 7a | 0 to 5°F | 14 km |
| 10994 | 7a | 0 to 5°F | 15 km |
| 10989 | 7a | 0 to 5°F | 16 km |
| 10965 | 7a | 0 to 5°F | 16 km |
| 07656 | 7a | 0 to 5°F | 18 km |
| 10954 | 7a | 0 to 5°F | 18 km |
| 07645 | 7a | 0 to 5°F | 19 km |
| 07677 | 7a | 0 to 5°F | 19 km |
| 10977 | 7a | 0 to 5°F | 22 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 USC00302129, at 41.0072, -73.8344, elevation 61 m (200 ft).
- Data quality: Representative (10+ years), 20 years of freeze data.
- Average days per year at or below 32°F: 109.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Westchester Co Airport (13 km)
- Bronx (19 km)
- New York Laguardia Airport (26 km)
- New York Cntrl Pk Twr (28 km)
- Yorktown Heights 1w (29 km)
- Mineola (36 km)
- Shrub Oak (36 km)
- Centerport (41 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.