Islip, NY Weather & Growing Conditions
Tonight
54°F
Patchy Fog
Patchy fog after 11pm. Partly cloudy, with a low around 54. Southwest wind around 6 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 54°F | Patchy Fog | 6 mph SW | 3% |
| Wednesday | 70°F | Patchy Fog then Sunny | 3 to 12 mph SW | 3% |
| Wednesday Night | 59°F | Partly Cloudy | 6 to 9 mph S | 2% |
| Thursday | 69°F | Slight Chance Rain Showers | 6 to 13 mph S | 19% |
| Thursday Night | 60°F | Rain Showers | 7 to 10 mph SW | 83% |
| Friday | 68°F | Showers And Thunderstorms | 8 mph SW | 92% |
| Friday Night | 55°F | Showers And Thunderstorms | 6 mph W | 92% |
| Saturday | 65°F | Rain Showers Likely | 6 to 9 mph NW | 59% |
| Saturday Night | 44°F | Slight Chance Rain Showers | 9 mph NW | 19% |
| Sunday | 60°F | Slight Chance Rain Showers then Mostly Sunny | 10 mph W | 18% |
| Sunday Night | 41°F | Partly Cloudy then Slight Chance Light Rain | 9 mph W | 15% |
| Monday | 59°F | Chance Light Rain | 10 to 16 mph NW | 26% |
| Monday Night | 40°F | Chance Light Rain | 13 mph W | 26% |
| Tuesday | 60°F | Slight Chance Light Rain then Mostly Sunny | 13 to 16 mph W | 19% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Islip, NY
Last spring frost
Apr 4
First fall frost
Nov 11
Growing season
219 days
Hardiness zone
7b
Explore more for Islip, NY: full frost dates · planting calendar · New York frost dates
Climate data from the nearest NOAA station, Molloy Cercom, Ny (6.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.