Mastic Beach, NY Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Mastic Beach, a community in Suffolk County, New York.
Tonight
56°F
Partly Cloudy
Partly cloudy, with a low around 56. Southwest wind around 8 mph.
7-day forecast for Mastic Beach
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 56°F | Partly Cloudy | 8 mph SW | 3% |
| Wednesday | 68°F | Sunny | 6 to 12 mph SW | 3% |
| Wednesday Night | 60°F | Partly Cloudy | 9 mph SW | 1% |
| Thursday | 67°F | Mostly Cloudy then Slight Chance Rain Showers | 8 to 14 mph SW | 16% |
| Thursday Night | 61°F | Rain Showers | 13 mph SW | 85% |
| Friday | 66°F | Showers And Thunderstorms | 10 mph SW | 94% |
| Friday Night | 56°F | Showers And Thunderstorms | 8 mph SW | 94% |
| Saturday | 63°F | Rain Showers Likely | 7 to 10 mph NW | 63% |
| Saturday Night | 45°F | Slight Chance Rain Showers | 10 mph NW | 21% |
| Sunday | 59°F | Slight Chance Rain Showers then Mostly Sunny | 10 mph W | 17% |
| Sunday Night | 43°F | Partly Cloudy then Slight Chance Light Rain | 9 to 13 mph W | 15% |
| Monday | 58°F | Chance Light Rain | 16 mph NW | 28% |
| Monday Night | 43°F | Chance Light Rain | 16 mph W | 28% |
| Tuesday | 59°F | Slight Chance Light Rain then Mostly Sunny | 18 mph W | 21% |
Forecast source: National Weather Service (api.weather.gov) for Mastic Beach (40.766, -72.837). Updated through the day.
Growing snapshot for Mastic Beach
Last spring frost
Apr 18
First fall frost
Oct 28
Growing season
193 days
Hardiness zone
7a
More local growing data for Mastic Beach: nearby ZIP 11951 weather · frost dates · planting calendar · New York frost dates
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Climate data from the nearest NOAA station, Shirley Brookhaven Ap, Ny (4.2 mi from Mastic Beach). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.