National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Overcast

47°F

8°C

Humidity 90%
Wind Speed N 10 mph
Barometer 29.78 in (1008.5 mb)
Dewpoint 44°F (7°C)
Visibility 10.00 mi
Wind Chill42°F (6°C)
Last update 22 May 11:56 pm EDT
Extended Forecast for

Central Islip NY

  • Overnight

    Overnight: A 30 percent chance of showers, mainly before 2am. Cloudy, with a low around 45. Northwest wind 3 to 6 mph.

    Low: 45 °F

    Chance
    Showers

  • Friday

    Friday: A 30 percent chance of showers, mainly after 2pm. Mostly cloudy, with a high near 62. West wind 5 to 11 mph.

    High: 62 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A 20 percent chance of showers before midnight. Partly cloudy, with a low around 49. West wind 7 to 10 mph.

    Low: 49 °F

    Slight Chance
    Showers then
    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 65. West wind 13 to 17 mph.

    High: 65 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 51. West wind around 8 mph.

    Low: 51 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 68.

    High: 68 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 52.

    Low: 52 °F

    Partly Cloudy

  • Memorial Day

    Memorial Day: Mostly sunny, with a high near 71.

    High: 71 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 54.

    Low: 54 °F

    Partly Cloudy

Detailed Forecast

Overnight
A 30 percent chance of showers, mainly before 2am. Cloudy, with a low around 45. Northwest wind 3 to 6 mph.
Friday
A 30 percent chance of showers, mainly after 2pm. Mostly cloudy, with a high near 62. West wind 5 to 11 mph.
Friday Night
A 20 percent chance of showers before midnight. Partly cloudy, with a low around 49. West wind 7 to 10 mph.
Saturday
Mostly sunny, with a high near 65. West wind 13 to 17 mph.
Saturday Night
Partly cloudy, with a low around 51. West wind around 8 mph.
Sunday
Mostly sunny, with a high near 68.
Sunday Night
Partly cloudy, with a low around 52.
Memorial Day
Mostly sunny, with a high near 71.
Monday Night
Partly cloudy, with a low around 54.
Tuesday
Mostly cloudy, with a high near 69.
Tuesday Night
A 30 percent chance of light rain. Mostly cloudy, with a low around 54.
Wednesday
A 30 percent chance of light rain. Mostly cloudy, with a high near 68.
Wednesday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 56.
Thursday
Partly sunny, with a high near 71.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Central Islip NY
 40.79°N 73.2°W (Elev. 98 ft)
Last Update:
10:52 pm EDT May 22, 2025
Forecast Valid:
12am EDT May 23, 2025-6pm EDT May 29, 2025
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation