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.

Partly Cloudy

27°F

-3°C

Humidity 41%
Wind Speed W 15 G 25 mph
Barometer 29.51 in (999.4 mb)
Dewpoint 6°F (-14°C)
Visibility 10.00 mi
Wind Chill15°F (-9°C)
Last update 15 Jan 9:56 pm EST
Extended Forecast for

5 Miles SSE Blue Point NY

  • Tonight

    Tonight: Mostly cloudy, with a low around 24. Wind chill values between 5 and 15. Windy, with a west wind 29 to 32 mph.

    Low: 24 °F

    Mostly Cloudy
    and Windy

  • Friday

    Friday: Sunny, with a high near 38. Wind chill values between 5 and 15. Windy, with a west wind 27 to 32 mph decreasing to 20 to 25 mph in the afternoon.

    High: 38 °F

    Sunny and
    Windy

  • Friday Night

    Friday Night: A 20 percent chance of snow after 1am. Increasing clouds, with a temperature rising to around 37 by 11pm. Wind chill values between 25 and 30. Breezy, with a southwest wind 15 to 20 mph.

    Low: 34 °F⇑

    Partly Cloudy
    and Breezy
    then Slight
    Chance Snow

  • Saturday

    Saturday: A chance of rain and snow before 1pm, then a chance of rain. Mostly cloudy, with a high near 42. Southwest wind 13 to 15 mph. Chance of precipitation is 50%.

    High: 42 °F

    Chance
    Rain/Snow

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 33. West wind 10 to 14 mph.

    Low: 33 °F

    Mostly Cloudy

  • Sunday

    Sunday: A 30 percent chance of snow after 1pm. Mostly cloudy, with a high near 37.

    High: 37 °F

    Mostly Cloudy
    then Chance
    Snow

  • Sunday Night

    Sunday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 26.

    Low: 26 °F

    Decreasing
    Clouds

  • M.L.King Day

    M.L.King Day: Sunny, with a high near 34. Breezy.

    High: 34 °F

    Sunny and
    Breezy

  • Monday Night

    Monday Night: Partly cloudy, with a low around 18. Windy.

    Low: 18 °F

    Partly Cloudy
    and Windy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 24. Wind chill values between 5 and 15. Windy, with a west wind 29 to 32 mph.
Friday
Sunny, with a high near 38. Wind chill values between 5 and 15. Windy, with a west wind 27 to 32 mph decreasing to 20 to 25 mph in the afternoon.
Friday Night
A 20 percent chance of snow after 1am. Increasing clouds, with a temperature rising to around 37 by 11pm. Wind chill values between 25 and 30. Breezy, with a southwest wind 15 to 20 mph.
Saturday
A chance of rain and snow before 1pm, then a chance of rain. Mostly cloudy, with a high near 42. Southwest wind 13 to 15 mph. Chance of precipitation is 50%.
Saturday Night
Mostly cloudy, with a low around 33. West wind 10 to 14 mph.
Sunday
A 30 percent chance of snow after 1pm. Mostly cloudy, with a high near 37.
Sunday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 26.
M.L.King Day
Sunny, with a high near 34. Breezy.
Monday Night
Partly cloudy, with a low around 18. Windy.
Tuesday
Mostly sunny, with a high near 24. Breezy.
Tuesday Night
Mostly clear, with a low around 18. Breezy.
Wednesday
Mostly sunny, with a high near 33. Breezy.
Wednesday Night
Mostly cloudy, with a low around 28. Breezy.
Thursday
Mostly sunny, with a high near 36. Breezy.
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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:
12:42 pm EST Jan 15, 2026
Forecast Valid:
10pm EST Jan 15, 2026-6pm EST Jan 22, 2026
 
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Additional Resources

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National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation