Water Mill, NY Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Water Mill, a community in Suffolk County, New York.
This Afternoon
66°F
Partly Sunny
Partly sunny. High near 66, with temperatures falling to around 60 in the afternoon. Southwest wind around 7 mph.
7-day forecast for Water Mill
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 66°F | Partly Sunny | 7 mph SW | 0% |
| Tonight | 53°F | Patchy Fog | 5 mph SW | 3% |
| Wednesday | 68°F | Patchy Fog then Sunny | 3 to 12 mph SW | 3% |
| Wednesday Night | 57°F | Partly Cloudy | 6 mph SW | 1% |
| Thursday | 68°F | Mostly Cloudy | 5 to 12 mph SW | 14% |
| Thursday Night | 58°F | Rain Showers | 8 mph SW | 83% |
| Friday | 66°F | Showers And Thunderstorms | 6 to 9 mph SW | 94% |
| Friday Night | 53°F | Showers And Thunderstorms | 5 mph SW | 94% |
| Saturday | 63°F | Rain Showers Likely | 5 to 8 mph NW | 70% |
| Saturday Night | 43°F | Chance Rain Showers | 5 to 8 mph NW | 27% |
| Sunday | 58°F | Slight Chance Rain Showers then Mostly Sunny | 9 mph W | 19% |
| Sunday Night | 41°F | Partly Cloudy then Slight Chance Light Rain | 6 to 9 mph W | 15% |
| Monday | 58°F | Chance Light Rain | 9 to 14 mph NW | 33% |
| Monday Night | 41°F | Chance Light Rain | 12 mph W | 33% |
Forecast source: National Weather Service (api.weather.gov) for Water Mill (40.922, -72.351). Updated through the day.
Growing snapshot for Water Mill
Last spring frost
Apr 23
First fall frost
Oct 24
Growing season
182 days
Hardiness zone
7b
More local growing data for Water Mill: nearby ZIP 11976 weather · frost dates · planting calendar · New York frost dates
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Climate data from the nearest NOAA station, Bridgehampton, Ny (3 mi from Water Mill). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.