Armonk, NY Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Armonk, a community in Westchester County, New York.
This Afternoon
79°F
Sunny
Sunny. High near 79, with temperatures falling to around 76 in the afternoon. Northwest wind around 10 mph.
7-day forecast for Armonk
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 79°F | Sunny | 10 mph NW | 0% |
| Tonight | 53°F | Partly Cloudy | 5 to 10 mph N | 0% |
| Saturday | 69°F | Mostly Sunny | 6 to 10 mph E | 0% |
| Saturday Night | 56°F | Mostly Cloudy then Slight Chance Rain Showers | 2 to 6 mph SE | 19% |
| Sunday | 67°F | Showers And Thunderstorms | 5 to 10 mph SE | 90% |
| Sunday Night | 57°F | Showers And Thunderstorms | 2 to 12 mph NW | 90% |
| Monday | 66°F | Chance Rain Showers | 8 to 12 mph N | 40% |
| Monday Night | 52°F | Chance Rain Showers | 7 to 12 mph NE | 27% |
| Tuesday | 62°F | Chance Rain Showers | 12 mph NE | 27% |
| Tuesday Night | 49°F | Chance Rain Showers then Mostly Cloudy | 10 to 14 mph NE | 26% |
| Wednesday | 61°F | Mostly Cloudy then Slight Chance Rain Showers | 14 mph NE | 15% |
| Wednesday Night | 49°F | Chance Rain Showers | 14 mph NE | 31% |
| Thursday | 61°F | Chance Rain Showers | 14 mph NE | 30% |
| Thursday Night | 50°F | Chance Rain Showers | 13 mph NE | 36% |
Forecast source: National Weather Service (api.weather.gov) for Armonk (41.133, -73.719). Updated through the day.
Growing snapshot for Armonk
Last spring frost
Apr 12
First fall frost
Oct 31
Growing season
200 days
Hardiness zone
7a
More local growing data for Armonk: nearby ZIP 10504 weather · frost dates · planting calendar · New York frost dates
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Climate data from the nearest NOAA station, Westchester Co Ap, Ny (4.3 mi from Armonk). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 18, 2026.