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.

Overcast

28°F

-2°C

Humidity 63%
Wind Speed W 9 mph
Barometer 30.09 in (1019.0 mb)
Dewpoint 17°F (-8°C)
Visibility 10.00 mi
Wind Chill19°F (-7°C)
Last update 14 Feb 5:56 am EST
Extended Forecast for

5 Miles SSE Blue Point NY

  • Today

    Today: Mostly sunny, with a high near 38. Wind chill values between 15 and 25. West wind 11 to 15 mph.

    High: 38 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 30. Northwest wind 6 to 9 mph.

    Low: 30 °F

    Mostly Clear

  • Sunday

    Sunday: Partly sunny, with a high near 36. Wind chill values between 25 and 30. North wind 6 to 10 mph becoming east in the afternoon.

    High: 36 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: A 40 percent chance of snow, mainly after 1am. Mostly cloudy, with a low around 32. Wind chill values between 25 and 30. East wind around 11 mph.

    Low: 32 °F

    Chance Snow

  • Washington's Birthday

    Washington's Birthday: Mostly cloudy, with a high near 38. Northeast wind 8 to 13 mph.

    High: 38 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 31.

    Low: 31 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 40.

    High: 40 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 35.

    Low: 35 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A 50 percent chance of rain. Cloudy, with a high near 41.

    High: 41 °F

    Chance Rain

Detailed Forecast

Today
Mostly sunny, with a high near 38. Wind chill values between 15 and 25. West wind 11 to 15 mph.
Tonight
Mostly clear, with a low around 30. Northwest wind 6 to 9 mph.
Sunday
Partly sunny, with a high near 36. Wind chill values between 25 and 30. North wind 6 to 10 mph becoming east in the afternoon.
Sunday Night
A 40 percent chance of snow, mainly after 1am. Mostly cloudy, with a low around 32. Wind chill values between 25 and 30. East wind around 11 mph.
Washington's Birthday
Mostly cloudy, with a high near 38. Northeast wind 8 to 13 mph.
Monday Night
Mostly cloudy, with a low around 31.
Tuesday
Partly sunny, with a high near 40.
Tuesday Night
Mostly cloudy, with a low around 35.
Wednesday
A 50 percent chance of rain. Cloudy, with a high near 41.
Wednesday Night
Rain likely before 1am, then a chance of rain and snow. Mostly cloudy, with a low around 34. Chance of precipitation is 60%.
Thursday
A 30 percent chance of rain. Mostly cloudy, with a high near 40.
Thursday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 31.
Friday
A chance of rain and snow. Mostly cloudy, with a high near 38. Chance of precipitation is 50%.
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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:
4:39 am EST Feb 14, 2026
Forecast Valid:
6am EST Feb 14, 2026-6pm EST Feb 20, 2026
 
Forecast Discussion
 
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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