Central Islip, NY Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Central Islip, a community in Suffolk County, New York.
This Afternoon
80°F
Sunny
Sunny. High near 80, with temperatures falling to around 78 in the afternoon. North wind around 10 mph.
7-day forecast for Central Islip
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 80°F | Sunny | 10 mph N | 0% |
| Tonight | 56°F | Partly Cloudy | 6 to 12 mph N | 0% |
| Saturday | 70°F | Mostly Sunny | 12 mph E | 0% |
| Saturday Night | 57°F | Mostly Cloudy | 5 to 9 mph SE | 3% |
| Sunday | 71°F | Showers And Thunderstorms | 7 to 15 mph SE | 78% |
| Sunday Night | 60°F | Showers And Thunderstorms | 7 to 12 mph SW | 90% |
| Monday | 68°F | Rain Showers Likely | 12 to 15 mph NE | 62% |
| Monday Night | 55°F | Chance Rain Showers | 10 to 15 mph NE | 27% |
| Tuesday | 65°F | Chance Rain Showers | 17 mph NE | 27% |
| Tuesday Night | 54°F | Chance Rain Showers then Mostly Cloudy | 17 mph NE | 27% |
| Wednesday | 65°F | Slight Chance Rain Showers | 20 mph NE | 15% |
| Wednesday Night | 53°F | Chance Rain Showers | 15 to 18 mph NE | 36% |
| Thursday | 64°F | Chance Rain Showers | 20 mph NE | 36% |
| Thursday Night | 53°F | Chance Rain Showers | 13 to 17 mph NE | 36% |
Forecast source: National Weather Service (api.weather.gov) for Central Islip (40.784, -73.194). Updated through the day.
Growing snapshot for Central Islip
Last spring frost
Apr 10
First fall frost
Nov 2
Growing season
207 days
Hardiness zone
7b
More local growing data for Central Islip: nearby ZIP 11722 weather · frost dates · planting calendar · New York frost dates
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Climate data from the nearest NOAA station, Islip Li Macarthur Ap, Ny (5 mi from Central Islip). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.