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

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Overcast

36°F

2°C

Humidity 76%
Wind Speed E 12 mph
Barometer 30.51 in (1033.3 mb)
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Wind Chill28°F (-2°C)
Last update 3 Mar 11:56 am EST
Extended Forecast for

East Islip NY

  • This Afternoon

    This Afternoon: Rain. High near 40. East wind 6 to 8 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 40 °F

    Rain

  • Tonight

    Tonight: Rain, mainly before 4am. Low around 35. Light and variable wind becoming southwest around 6 mph in the evening. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 35 °F

    Rain

  • Wednesday

    Wednesday: Partly sunny, with a high near 46. Light and variable wind.

    High: 46 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A 30 percent chance of rain after 1am. Mostly cloudy, with a low around 35. Calm wind.

    Low: 35 °F

    Mostly Cloudy
    then Chance
    Rain

  • Thursday

    Thursday: Rain likely, mainly before 1pm. Cloudy, with a high near 45. Calm wind becoming northeast around 6 mph in the afternoon. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 45 °F

    Rain Likely

  • Thursday Night

    Thursday Night: Rain likely. Cloudy, with a low around 36. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 36 °F

    Rain Likely

  • Friday

    Friday: A 40 percent chance of rain before 1pm. Cloudy, with a high near 44.

    High: 44 °F

    Chance Rain

  • Friday Night

    Friday Night: Cloudy, with a low around 35.

    Low: 35 °F

    Cloudy

  • Saturday

    Saturday: Cloudy, with a high near 51.

    High: 51 °F

    Cloudy

Detailed Forecast

This Afternoon
Rain. High near 40. East wind 6 to 8 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Tonight
Rain, mainly before 4am. Low around 35. Light and variable wind becoming southwest around 6 mph in the evening. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday
Partly sunny, with a high near 46. Light and variable wind.
Wednesday Night
A 30 percent chance of rain after 1am. Mostly cloudy, with a low around 35. Calm wind.
Thursday
Rain likely, mainly before 1pm. Cloudy, with a high near 45. Calm wind becoming northeast around 6 mph in the afternoon. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
Rain likely. Cloudy, with a low around 36. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.
Friday
A 40 percent chance of rain before 1pm. Cloudy, with a high near 44.
Friday Night
Cloudy, with a low around 35.
Saturday
Cloudy, with a high near 51.
Saturday Night
Rain likely, mainly before 1am. Cloudy, with a low around 42. Chance of precipitation is 60%.
Sunday
Mostly cloudy, with a high near 56.
Sunday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 42.
Monday
Mostly cloudy, with a high near 56.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
East Islip NY
 40.73°N 73.19°W (Elev. 16 ft)
Last Update:
4:31 am EST Mar 3, 2026
Forecast Valid:
12pm EST Mar 3, 2026-6pm EDT Mar 9, 2026
 
Forecast Discussion
 
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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