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.

Mostly Cloudy and Breezy

18°F

-8°C

Humidity 54%
Wind Speed N 21 G 31 mph
Barometer 29.82 in (1009.9 mb)
Dewpoint 4°F (-16°C)
Visibility 10.00 mi
Wind Chill1°F (-17°C)
Last update 1 Feb 10:56 pm EST
Extended Forecast for

5 Miles SSE Blue Point NY

  • Tonight

    Tonight: Mostly cloudy, with a low around 17. Wind chill values between zero and 5. Blustery, with a northwest wind 22 to 24 mph.

    Low: 17 °F

    Mostly Cloudy
    and Blustery

  • Monday

    Monday: Sunny, with a high near 29. Wind chill values between zero and 10. Blustery, with a northwest wind 17 to 21 mph.

    High: 29 °F

    Mostly Sunny
    and Blustery
    then Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 20. Wind chill values between 10 and 15. Northwest wind 9 to 13 mph.

    Low: 20 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 31. Wind chill values between 10 and 20. West wind 8 to 11 mph.

    High: 31 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 25. West wind 7 to 11 mph.

    Low: 25 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 30.

    High: 30 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 19.

    Low: 19 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 28.

    High: 28 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 20.

    Low: 20 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 17. Wind chill values between zero and 5. Blustery, with a northwest wind 22 to 24 mph.
Monday
Sunny, with a high near 29. Wind chill values between zero and 10. Blustery, with a northwest wind 17 to 21 mph.
Monday Night
Mostly clear, with a low around 20. Wind chill values between 10 and 15. Northwest wind 9 to 13 mph.
Tuesday
Sunny, with a high near 31. Wind chill values between 10 and 20. West wind 8 to 11 mph.
Tuesday Night
Mostly cloudy, with a low around 25. West wind 7 to 11 mph.
Wednesday
Partly sunny, with a high near 30.
Wednesday Night
Partly cloudy, with a low around 19.
Thursday
Mostly sunny, with a high near 28.
Thursday Night
Partly cloudy, with a low around 20.
Friday
A 30 percent chance of snow after 1pm. Mostly cloudy, with a high near 31.
Friday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 15. Blustery.
Saturday
Mostly sunny and cold, with a high near 20. Windy.
Saturday Night
Partly cloudy, with a low around 10. Windy.
Sunday
Mostly sunny and cold, with a high near 19. Blustery.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SSE Blue Point NY
 40.68°N 72.99°W (Elev. 0 ft)
Last Update:
6:39 pm EST Feb 1, 2026
Forecast Valid:
11pm EST Feb 1, 2026-6pm EST Feb 8, 2026
 
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Additional Resources

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Chance of Precipitation