Thornwood, NY Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Thornwood, a community in Westchester County, New York.
Today
83°F
Mostly Sunny
Mostly sunny, with a high near 83. Northeast wind around 3 mph.
7-day forecast for Thornwood
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 83°F | Mostly Sunny | 3 mph NE | 0% |
| Tonight | 63°F | Mostly Cloudy | 3 mph N | 1% |
| Wednesday | 82°F | Partly Sunny then Chance Showers And Thunderstorms | 2 to 6 mph SE | 26% |
| Wednesday Night | 69°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 5 mph S | 32% |
| Thursday | 87°F | Chance Showers And Thunderstorms | 2 to 7 mph SW | 49% |
| Thursday Night | 71°F | Chance Showers And Thunderstorms then Partly Cloudy | 6 mph SW | 47% |
| Friday | 88°F | Mostly Sunny then Chance Showers And Thunderstorms | 3 to 7 mph SW | 43% |
| Friday Night | 70°F | Chance Showers And Thunderstorms | 5 mph SW | 41% |
| Saturday | 86°F | Partly Sunny then Chance Showers And Thunderstorms | 3 to 7 mph W | 35% |
| Saturday Night | 69°F | Chance Showers And Thunderstorms | 6 mph W | 35% |
| Sunday | 87°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 6 mph W | 15% |
| Sunday Night | 70°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 6 mph SW | 15% |
| Monday | 89°F | Sunny | 3 to 9 mph W | 14% |
| Monday Night | 69°F | Slight Chance Rain Showers | 5 to 8 mph W | 16% |
Forecast source: National Weather Service (api.weather.gov) for Thornwood (41.118, -73.779). Updated through the day.
Growing snapshot for Thornwood
Last spring frost
Apr 12
First fall frost
Oct 31
Growing season
200 days
Hardiness zone
7a
More local growing data for Thornwood: nearby ZIP 10594 weather · frost dates · planting calendar · New York frost dates
Nearby towns & communities
Ardsley
Armonk
Bedford
Bedford Hills
Briarcliff Manor
Bronxville
Buchanan
Chappaqua
Crompond
Croton-on-Hudson
Crugers
Dobbs Ferry
Eastchester
Elmsford
Fairview
Golden's Bridge
Greenville
Harrison
Hartsdale
Hastings-on-Hudson
Hawthorne
Heritage Hills
Irvington
Jefferson Valley-Yorktown
Katonah
Lake Mohegan
Larchmont
Lincolndale
Mamaroneck
Millwood
Climate data from the nearest NOAA station, Westchester Co Ap, Ny (4.7 mi from Thornwood). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.