Peconic, NY Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Peconic, a community in Suffolk County, New York.
Tonight
58°F
Partly Cloudy
Partly cloudy, with a low around 58. North wind 3 to 13 mph.
7-day forecast for Peconic
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 58°F | Partly Cloudy | 3 to 13 mph N | 0% |
| Saturday | 68°F | Mostly Sunny | 7 to 12 mph E | 0% |
| Saturday Night | 58°F | Partly Cloudy | 7 mph SE | 1% |
| Sunday | 70°F | Showers And Thunderstorms | 5 to 12 mph SE | 78% |
| Sunday Night | 59°F | Showers And Thunderstorms | 7 to 13 mph SE | 90% |
| Monday | 69°F | Rain Showers Likely | 13 to 16 mph NE | 66% |
| Monday Night | 56°F | Chance Rain Showers | 12 to 17 mph NE | 27% |
| Tuesday | 66°F | Slight Chance Rain Showers | 20 mph NE | 24% |
| Tuesday Night | 56°F | Slight Chance Rain Showers then Mostly Cloudy | 17 to 21 mph NE | 22% |
| Wednesday | 66°F | Mostly Cloudy then Slight Chance Rain Showers | 21 to 24 mph NE | 15% |
| Wednesday Night | 56°F | Chance Rain Showers | 20 to 23 mph NE | 30% |
| Thursday | 65°F | Chance Rain Showers | 21 to 24 mph NE | 35% |
| Thursday Night | 56°F | Chance Rain Showers | 14 to 20 mph NE | 36% |
| Friday | 68°F | Chance Rain Showers | 16 to 20 mph N | 34% |
Forecast source: National Weather Service (api.weather.gov) for Peconic (41.039, -72.464). Updated through the day.
Growing snapshot for Peconic
Last spring frost
Apr 19
First fall frost
Nov 1
Growing season
196 days
Hardiness zone
7b
More local growing data for Peconic: nearby ZIP 11958 weather · frost dates · planting calendar · New York frost dates
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Climate data from the nearest NOAA station, Mattituck, Ny (4.2 mi from Peconic). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.