Peconic, NY Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Peconic, a community in Suffolk County, New York.
Overnight
54°F
Partly Cloudy
Partly cloudy, with a low around 54. Southwest wind around 5 mph.
7-day forecast for Peconic
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 54°F | Partly Cloudy | 5 mph SW | 3% |
| Wednesday | 69°F | Sunny | 5 to 10 mph SW | 3% |
| Wednesday Night | 57°F | Partly Cloudy | 7 mph SW | 2% |
| Thursday | 68°F | Mostly Cloudy then Slight Chance Rain Showers | 6 to 12 mph SW | 17% |
| Thursday Night | 59°F | Rain Showers | 9 mph SW | 84% |
| Friday | 66°F | Showers And Thunderstorms | 8 mph S | 93% |
| Friday Night | 55°F | Showers And Thunderstorms | 5 mph SW | 93% |
| Saturday | 63°F | Rain Showers Likely | 5 to 9 mph NW | 67% |
| Saturday Night | 47°F | Chance Rain Showers | 6 to 9 mph NW | 27% |
| Sunday | 59°F | Slight Chance Rain Showers then Mostly Sunny | 10 mph W | 18% |
| Sunday Night | 45°F | Partly Cloudy | 7 to 10 mph W | 14% |
| Monday | 58°F | Chance Light Rain | 12 to 15 mph NW | 32% |
| Monday Night | 44°F | Chance Light Rain | 14 mph W | 32% |
| Tuesday | 59°F | Slight Chance Light Rain then Mostly Sunny | 15 mph W | 24% |
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 Nov 4, 2026.