Katonah, NY Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Katonah, a community in Westchester County, New York.
Today
73°F
Sunny
Sunny. High near 73, with temperatures falling to around 65 in the afternoon. Southwest wind 3 to 8 mph.
7-day forecast for Katonah
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 73°F | Sunny | 3 to 8 mph SW | 0% |
| Tonight | 55°F | Mostly Cloudy | 3 mph S | 0% |
| Thursday | 71°F | Chance Rain Showers | 3 to 9 mph S | 32% |
| Thursday Night | 59°F | Rain Showers Likely | 5 mph S | 71% |
| Friday | 69°F | Rain Showers | 3 mph SE | 80% |
| Friday Night | 50°F | Rain Showers Likely | 2 mph N | 68% |
| Saturday | 64°F | Mostly Sunny then Slight Chance Rain Showers | 6 mph NW | 17% |
| Saturday Night | 40°F | Chance Light Rain | 6 mph W | 25% |
| Sunday | 58°F | Slight Chance Light Rain then Mostly Sunny | 8 mph NW | 15% |
| Sunday Night | 36°F | Partly Cloudy | 6 mph W | 4% |
| Monday | 57°F | Mostly Sunny | 7 to 12 mph W | 11% |
| Monday Night | 34°F | Mostly Clear | 7 mph W | 11% |
| Tuesday | 61°F | Mostly Sunny | 6 to 10 mph SW | 4% |
| Tuesday Night | 34°F | Mostly Clear | 7 mph W | 1% |
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 Nov 4, 2026.