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.

16°F

-9°C

Humidity 54%
Wind Speed NW 14 G 24 mph
Barometer 30.00 in (1015.8 mb)
Dewpoint 2°F (-17°C)
Visibility 10.00 mi
Wind Chill2°F (-17°C)
Last update 27 Jan 2:56 am EST
Extended Forecast for

2 Miles NNW Stony Brook NY

  • Overnight

    Overnight: Clear, with a low around 17. Wind chill values between zero and 5. Blustery, with a west wind 21 to 23 mph.

    Low: 17 °F

    Clear and
    Blustery

  • Tuesday

    Tuesday: Increasing clouds, with a high near 22. Wind chill values between zero and 10. West wind 13 to 18 mph, with gusts as high as 28 mph.

    High: 22 °F

    Increasing
    Clouds

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 14. Wind chill values between zero and 5. West wind around 15 mph.

    Low: 14 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 24. Wind chill values between zero and 10. West wind 7 to 11 mph.

    High: 24 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 12. West wind 6 to 8 mph.

    Low: 12 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 22.

    High: 22 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 9.

    Low: 9 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny and cold, with a high near 20.

    High: 20 °F

    Cold

  • Friday Night

    Friday Night: Partly cloudy, with a low around 8.

    Low: 8 °F

    Partly Cloudy

Detailed Forecast

Overnight
Clear, with a low around 17. Wind chill values between zero and 5. Blustery, with a west wind 21 to 23 mph.
Tuesday
Increasing clouds, with a high near 22. Wind chill values between zero and 10. West wind 13 to 18 mph, with gusts as high as 28 mph.
Tuesday Night
Mostly clear, with a low around 14. Wind chill values between zero and 5. West wind around 15 mph.
Wednesday
Mostly sunny, with a high near 24. Wind chill values between zero and 10. West wind 7 to 11 mph.
Wednesday Night
Mostly cloudy, with a low around 12. West wind 6 to 8 mph.
Thursday
Mostly sunny, with a high near 22.
Thursday Night
Mostly clear, with a low around 9.
Friday
Mostly sunny and cold, with a high near 20.
Friday Night
Partly cloudy, with a low around 8.
Saturday
Mostly sunny, with a high near 24.
Saturday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 16.
Sunday
A 50 percent chance of snow. Mostly cloudy, with a high near 29. Blustery.
Sunday Night
Mostly cloudy, with a low around 20. Blustery.
Monday
Mostly sunny, with a high near 31.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NNW Stony Brook NY
 40.92°N 73.15°W (Elev. 36 ft)
Last Update:
1:34 am EST Jan 27, 2026
Forecast Valid:
3am EST Jan 27, 2026-6pm EST Feb 2, 2026
 
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Additional Resources

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