Jefferson Valley-Yorktown, NY Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Jefferson Valley-Yorktown, a community in Westchester County, New York.
Today
82°F
Sunny
Sunny, with a high near 82. West wind around 2 mph.
7-day forecast for Jefferson Valley-Yorktown
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 82°F | Sunny | 2 mph W | 0% |
| Tonight | 63°F | Mostly Cloudy | 2 mph SE | 0% |
| Wednesday | 81°F | Partly Sunny then Slight Chance Showers And Thunderstorms | 5 mph S | 24% |
| Wednesday Night | 69°F | Chance Showers And Thunderstorms | 5 mph S | 35% |
| Thursday | 86°F | Showers And Thunderstorms Likely | 2 to 7 mph SW | 56% |
| Thursday Night | 71°F | Chance Showers And Thunderstorms then Partly Cloudy | 5 mph SW | 52% |
| Friday | 86°F | Mostly Sunny then Chance Showers And Thunderstorms | 2 to 6 mph SW | 45% |
| Friday Night | 69°F | Chance Showers And Thunderstorms | 3 mph SW | 42% |
| Saturday | 84°F | Partly Sunny then Chance Showers And Thunderstorms | 2 to 6 mph W | 38% |
| Saturday Night | 68°F | Chance Showers And Thunderstorms | 5 mph W | 38% |
| Sunday | 86°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 2 to 6 mph W | 15% |
| Sunday Night | 70°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 3 mph SW | 15% |
| Monday | 87°F | Sunny then Slight Chance Showers And Thunderstorms | 2 to 8 mph W | 16% |
| Monday Night | 68°F | Slight Chance Showers And Thunderstorms | 3 to 7 mph W | 17% |
Forecast source: National Weather Service (api.weather.gov) for Jefferson Valley-Yorktown (41.319, -73.800). Updated through the day.
Growing snapshot for Jefferson Valley-Yorktown
Last spring frost
Apr 30
First fall frost
Oct 17
Growing season
172 days
Hardiness zone
6b
More local growing data for Jefferson Valley-Yorktown: nearby ZIP 10535 weather · frost dates · planting calendar · New York frost dates
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Climate data from the nearest NOAA station, Shrub Oak, Ny (2.2 mi from Jefferson Valley-Yorktown). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.