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.

A Few Clouds

28°F

-2°C

Humidity 51%
Wind Speed W 14 G 25 mph
Barometer 29.87 in (1011.6 mb)
Dewpoint 12°F (-11°C)
Visibility 10.00 mi
Wind Chill17°F (-8°C)
Last update 24 Feb 11:56 am EST
Extended Forecast for

5 Miles SSE Blue Point NY

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 33. Wind chill values between 15 and 20. Breezy, with a northwest wind 20 to 22 mph, with gusts as high as 32 mph.

    High: 33 °F

    Mostly Sunny
    and Breezy

  • Tonight

    Tonight: A 50 percent chance of snow after 4am. Increasing clouds, with a low around 21. Wind chill values between 10 and 15. West wind 8 to 18 mph becoming south after midnight.

    Low: 21 °F

    Partly Cloudy
    then Chance
    Snow

  • Wednesday

    Wednesday: Snow likely, mixing with rain after 10am, then gradually ending. Cloudy, then gradually becoming mostly sunny, with a high near 39. Wind chill values between 20 and 30. Breezy, with a southwest wind 18 to 24 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    High: 39 °F

    Rain/Snow
    Likely and
    Breezy

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 32. Wind chill values between 25 and 30. Southwest wind 13 to 18 mph.

    Low: 32 °F

    Partly Cloudy

  • Thursday

    Thursday: A slight chance of snow before 1pm, then a chance of rain and snow. Mostly cloudy, with a high near 37. Southwest wind 9 to 11 mph. Chance of precipitation is 50%.

    High: 37 °F

    Slight Chance
    Snow then
    Chance
    Rain/Snow

  • Thursday Night

    Thursday Night: Snow likely, mainly before 1am. Mostly cloudy, with a low around 31. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Low: 31 °F

    Snow Likely

  • Friday

    Friday: Mostly sunny, with a high near 35.

    High: 35 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 32.

    Low: 32 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 40.

    High: 40 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 33. Wind chill values between 15 and 20. Breezy, with a northwest wind 20 to 22 mph, with gusts as high as 32 mph.
Tonight
A 50 percent chance of snow after 4am. Increasing clouds, with a low around 21. Wind chill values between 10 and 15. West wind 8 to 18 mph becoming south after midnight.
Wednesday
Snow likely, mixing with rain after 10am, then gradually ending. Cloudy, then gradually becoming mostly sunny, with a high near 39. Wind chill values between 20 and 30. Breezy, with a southwest wind 18 to 24 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Wednesday Night
Partly cloudy, with a low around 32. Wind chill values between 25 and 30. Southwest wind 13 to 18 mph.
Thursday
A slight chance of snow before 1pm, then a chance of rain and snow. Mostly cloudy, with a high near 37. Southwest wind 9 to 11 mph. Chance of precipitation is 50%.
Thursday Night
Snow likely, mainly before 1am. Mostly cloudy, with a low around 31. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Friday
Mostly sunny, with a high near 35.
Friday Night
Mostly clear, with a low around 32.
Saturday
Mostly sunny, with a high near 40.
Saturday Night
Partly cloudy, with a low around 32.
Sunday
Mostly sunny, with a high near 37.
Sunday Night
Partly cloudy, with a low around 20.
Monday
A 30 percent chance of snow. Mostly sunny, with a high near 29.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SSE Blue Point NY
 40.68°N 72.99°W (Elev. 0 ft)
Last Update:
10:52 am EST Feb 24, 2026
Forecast Valid:
12pm EST Feb 24, 2026-6pm EST Mar 2, 2026
 
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Additional Resources

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High Temperature

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Chance of Precipitation