Frost dates in Yonkers, New York
NOAA 1991–2020 normals for a 32 °F freeze. Low spots and the edge of town run colder than downtown.
Short answer
The average last spring frost in Yonkers is April 20, and the average first fall frost is October 26, from NOAA's Dobbs Ferry-Ardsley station, 5 miles from the middle of Yonkers. 1 year in 10 the last frost comes after May 6, and the first one by October 10. That leaves about 189 frost-free days. Yonkers is in USDA planting zone 7b.
Weather stations around Yonkers
The first row is the date most people in Yonkers go by. The others show how far the dates move across the area.
| Station | Last spring frost | First fall frost | Frost-free |
|---|---|---|---|
| Dobbs Ferry-Ardsley 5 mi away, 200 ft | April 20 1 in 10 after May 6 | October 26 1 in 10 by October 10 | 189 days |
| Bronx 8 mi away, 39 ft | April 1 1 in 10 after April 12 | November 16 1 in 10 by November 2 | 229 days |
| New York Laguardia Airport 12 mi away, 11 ft | March 26 1 in 10 after April 6 | November 25 1 in 10 by November 10 | 244 days |
| Westchester Co Airport 12 mi away, 379 ft | April 12 1 in 10 after April 27 | October 31 1 in 10 by October 15 | 202 days |
| Teterboro Airport 12 mi away, 9 ft | April 3 1 in 10 after April 16 | November 4 1 in 10 by October 21 | 215 days |
Distances are from the middle of Yonkers as the Census Bureau maps it. The average date is NOAA's 50% date: half of years have a later last frost, or an earlier first one. Plan by the 1-in-10 date if a freeze would cost you plants. The planting zone is the USDA 2023 zone for ZIP code 10701, at the middle of the city.
Your exact ZIP code
Yonkers covers a lot of ground. For the station nearest your own street, and its planting zone, type your ZIP code.
How these dates work
Frost dates come from NOAA's 1991 to 2020 Climate Normals, which work out from each weather station's daily lows how likely the last spring freeze and the first fall freeze (32 °F) are by each date. We use the station nearest the middle of your ZIP code and show its height and distance, since a station on a hill or by a lake can differ from your yard.
The average date is the 50% date: half of years have a freeze after the spring date or before the fall one. The 1-in-10 dates are NOAA's 10% dates, the ones to plan by if a late freeze would cost you plants. Within one yard, cold air pools in low spots while walls and paving hold heat, so some corners freeze before others.
More frost dates
All of New York, station by station.
Other New York cities: New York · Buffalo · Rochester · Syracuse
Nearby: Paterson, NJ · Jersey City, NJ · Newark, NJ
Where the numbers come from
- USDA Plant Hardiness Zone Map, 2023. Agricultural Research Service, U.S. Department of Agriculture
- PRISM Climate Group, Oregon State University (zone data)
- NOAA NCEI, U.S. Climate Normals 1991–2020, annual/seasonal
- NOAA, Normals calculation methodology (frost-freeze probability dates)
- US Census Bureau, 2025 ZCTA gazetteer (ZIP code centers)
- US Census Bureau, 2025 city population estimates and place gazetteer