Setauket, NY Weather & Growing Conditions
This Afternoon
69°F
Partly Sunny
Partly sunny. High near 69, with temperatures falling to around 63 in the afternoon. Southwest wind around 10 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 69°F | Partly Sunny | 10 mph SW | 0% |
| Tonight | 54°F | Partly Cloudy then Patchy Fog | 7 mph SW | 3% |
| Wednesday | 70°F | Patchy Fog then Sunny | 5 to 9 mph SW | 3% |
| Wednesday Night | 59°F | Partly Cloudy | 8 mph S | 2% |
| Thursday | 70°F | Slight Chance Rain Showers | 6 to 10 mph S | 20% |
| Thursday Night | 60°F | Rain Showers | 6 to 9 mph SW | 84% |
| Friday | 67°F | Showers And Thunderstorms | 6 mph S | 91% |
| Friday Night | 56°F | Showers And Thunderstorms then Light Rain | 6 mph W | 91% |
| Saturday | 64°F | Light Rain Likely | 8 mph NW | 60% |
| Saturday Night | 48°F | Slight Chance Light Rain | 10 mph NW | 21% |
| Sunday | 59°F | Slight Chance Light Rain then Mostly Sunny | 9 mph W | 18% |
| Sunday Night | 45°F | Partly Cloudy | 10 mph W | 14% |
| Monday | 58°F | Chance Light Rain | 12 to 15 mph NW | 26% |
| Monday Night | 45°F | Chance Light Rain | 15 mph W | 26% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Setauket, NY
Last spring frost
Apr 15
First fall frost
Nov 10
Growing season
208 days
Hardiness zone
7b
Explore more for Setauket, NY: full frost dates · planting calendar · New York frost dates
Climate data from the nearest NOAA station, Setauket Strong, Ny (1.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.