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.

Light Rain

42°F

6°C

Humidity 82%
Wind Speed E 3 mph
Barometer 30.12 in
Dewpoint 37°F (3°C)
Visibility 6.00 mi
Last update 10 Jan 2:56 pm EST
Extended Forecast for

East Islip NY

  • This Afternoon

    This Afternoon: Rain. High near 44. East wind 11 to 13 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 44 °F

    Rain

  • Tonight

    Tonight: Rain, mainly before 4am. Low around 42. East wind 8 to 15 mph becoming west after midnight. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 42 °F

    Rain then
    Rain Likely

  • Sunday

    Sunday: A chance of rain before 10am, then a slight chance of showers after 4pm. Cloudy, then gradually becoming mostly sunny, with a high near 45. West wind 9 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 30%.

    High: 45 °F

    Chance Rain

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 30. Wind chill values between 20 and 30. Breezy, with a west wind 23 to 25 mph, with gusts as high as 36 mph.

    Low: 30 °F

    Partly Cloudy
    and Breezy

  • Monday

    Monday: Sunny, with a high near 41. Breezy, with a west wind 14 to 20 mph.

    High: 41 °F

    Mostly Sunny
    and Breezy
    then Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 33.

    Low: 33 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 45.

    High: 45 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 39.

    Low: 39 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Cloudy, with a high near 46.

    High: 46 °F

    Cloudy

Detailed Forecast

This Afternoon
Rain. High near 44. East wind 11 to 13 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Tonight
Rain, mainly before 4am. Low around 42. East wind 8 to 15 mph becoming west after midnight. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Sunday
A chance of rain before 10am, then a slight chance of showers after 4pm. Cloudy, then gradually becoming mostly sunny, with a high near 45. West wind 9 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 30%.
Sunday Night
Partly cloudy, with a low around 30. Wind chill values between 20 and 30. Breezy, with a west wind 23 to 25 mph, with gusts as high as 36 mph.
Monday
Sunny, with a high near 41. Breezy, with a west wind 14 to 20 mph.
Monday Night
Mostly clear, with a low around 33.
Tuesday
Sunny, with a high near 45.
Tuesday Night
Mostly cloudy, with a low around 39.
Wednesday
Cloudy, with a high near 46.
Wednesday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 31.
Thursday
Partly sunny, with a high near 38.
Thursday Night
Partly cloudy, with a low around 23.
Friday
Mostly sunny, with a high near 35.
Friday Night
Partly cloudy, with a low around 27.
Saturday
Mostly sunny, with a high near 39.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
East Islip NY
 40.7°N 73.19°W (Elev. 0 ft)
Last Update:
1:33 pm EST Jan 10, 2026
Forecast Valid:
3pm EST Jan 10, 2026-6pm EST Jan 17, 2026
 
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Additional Resources

Radar & Satellite Image

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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