Katonah, NY Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Katonah, a community in Westchester County, New York.
Today
83°F
Patchy Fog then Mostly Sunny
Patchy fog before 9am. Mostly sunny, with a high near 83. Southwest wind around 3 mph.
7-day forecast for Katonah
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 83°F | Patchy Fog then Mostly Sunny | 3 mph SW | 0% |
| Tonight | 62°F | Mostly Cloudy | 2 mph SW | 0% |
| Wednesday | 82°F | Partly Sunny then Slight Chance Showers And Thunderstorms | 5 mph S | 19% |
| Wednesday Night | 69°F | Chance Showers And Thunderstorms | 5 mph S | 30% |
| Thursday | 87°F | Chance Showers And Thunderstorms | 2 to 7 mph SW | 54% |
| Thursday Night | 71°F | Chance Showers And Thunderstorms then Partly Cloudy | 5 mph SW | 50% |
| Friday | 88°F | Mostly Sunny then Chance Showers And Thunderstorms | 2 to 6 mph SW | 45% |
| Friday Night | 70°F | Chance Showers And Thunderstorms | 3 mph SW | 43% |
| Saturday | 86°F | Partly Sunny then Chance Showers And Thunderstorms | 1 to 6 mph W | 37% |
| Saturday Night | 68°F | Chance Showers And Thunderstorms | 1 to 5 mph W | 37% |
| Sunday | 88°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 1 to 6 mph W | 15% |
| Sunday Night | 70°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 5 mph SW | 15% |
| Monday | 88°F | Sunny then Slight Chance Showers And Thunderstorms | 2 to 8 mph W | 15% |
| Monday Night | 68°F | Slight Chance Showers And Thunderstorms | 3 to 7 mph W | 17% |
Forecast source: National Weather Service (api.weather.gov) for Katonah (41.255, -73.685). Updated through the day.
Growing snapshot for Katonah
Last spring frost
Apr 25
First fall frost
Oct 19
Growing season
174 days
Hardiness zone
7a
More local growing data for Katonah: nearby ZIP 10536 weather · frost dates · planting calendar · New York frost dates
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Climate data from the nearest NOAA station, Yorktown Hts 1W, Ny (5.7 mi from Katonah). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.