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.

A Few Clouds

20°F

-7°C

Humidity 38%
Wind Speed W 9 mph
Barometer 30.34 in (1027.4 mb)
Dewpoint -2°F (-19°C)
Visibility 10.00 mi
Wind Chill10°F (-12°C)
Last update 20 Jan 4:56 pm EST
Extended Forecast for

Kings Park NY

  • Tonight

    Tonight: Mostly clear, with a low around 14. Wind chill values between 5 and 10. West wind 9 to 15 mph.

    Low: 14 °F

    Mostly Clear

  • Wednesday

    Wednesday: Increasing clouds, with a high near 37. Wind chill values between 5 and 15. Southwest wind 7 to 14 mph.

    High: 37 °F

    Increasing
    Clouds

  • Wednesday Night

    Wednesday Night: A slight chance of rain and snow before 1am, then a slight chance of snow between 1am and 4am, then a slight chance of rain after 4am. Cloudy, then gradually becoming partly cloudy, with a steady temperature around 35. Southwest wind 13 to 15 mph. Chance of precipitation is 20%.

    Low: 35 °F

    Slight Chance
    Rain/Snow

  • Thursday

    Thursday: Mostly sunny, with a high near 43. Southwest wind 14 to 16 mph.

    High: 43 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 25. West wind 10 to 14 mph.

    Low: 25 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 33.

    High: 33 °F

    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 10.

    Low: 10 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny and cold, with a high near 18.

    High: 18 °F

    Cold

  • Saturday Night

    Saturday Night: A 40 percent chance of snow after 1am. Mostly cloudy, with a low around 12.

    Low: 12 °F

    Mostly Cloudy
    then Chance
    Snow

Detailed Forecast

Tonight
Mostly clear, with a low around 14. Wind chill values between 5 and 10. West wind 9 to 15 mph.
Wednesday
Increasing clouds, with a high near 37. Wind chill values between 5 and 15. Southwest wind 7 to 14 mph.
Wednesday Night
A slight chance of rain and snow before 1am, then a slight chance of snow between 1am and 4am, then a slight chance of rain after 4am. Cloudy, then gradually becoming partly cloudy, with a steady temperature around 35. Southwest wind 13 to 15 mph. Chance of precipitation is 20%.
Thursday
Mostly sunny, with a high near 43. Southwest wind 14 to 16 mph.
Thursday Night
Mostly cloudy, with a low around 25. West wind 10 to 14 mph.
Friday
Partly sunny, with a high near 33.
Friday Night
Partly cloudy, with a low around 10.
Saturday
Partly sunny and cold, with a high near 18.
Saturday Night
A 40 percent chance of snow after 1am. Mostly cloudy, with a low around 12.
Sunday
A 50 percent chance of snow. Cloudy, with a high near 22.
Sunday Night
A 50 percent chance of snow. Mostly cloudy, with a low around 16.
Monday
A 30 percent chance of snow. Partly sunny, with a high near 25.
Monday Night
Partly cloudy, with a low around 15.
Tuesday
Mostly sunny, with a high near 26.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Kings Park NY
 40.91°N 73.24°W (Elev. 0 ft)
Last Update:
3:33 pm EST Jan 20, 2026
Forecast Valid:
5pm EST Jan 20, 2026-6pm EST Jan 27, 2026
 
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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