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

44°F

7°C

Humidity 51%
Wind Speed S 9 mph
Barometer 30.05 in (1017.8 mb)
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Wind Chill39°F (4°C)
Last update 7 Dec 12:56 pm EST
Extended Forecast for

Blue Point NY

  • This Afternoon

    This Afternoon: Mostly cloudy, with a high near 42. West wind around 8 mph.

    High: 42 °F

    Mostly Cloudy

  • Tonight

    Tonight: Partly cloudy, with a low around 24. West wind 8 to 11 mph becoming northwest after midnight. Winds could gust as high as 26 mph.

    Low: 24 °F

    Partly Cloudy

  • Monday

    Monday: Partly sunny, with a steady temperature around 28. Wind chill values between 15 and 20. North wind 11 to 16 mph, with gusts as high as 30 mph.

    High: 28 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 17. North wind 5 to 9 mph, with gusts as high as 20 mph.

    Low: 17 °F

    Decreasing
    Clouds

  • Tuesday

    Tuesday: Increasing clouds, with a high near 42. Light and variable wind becoming south 5 to 10 mph in the morning.

    High: 42 °F

    Increasing
    Clouds

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 33.

    Low: 33 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A 40 percent chance of rain. Mostly cloudy, with a high near 49. Breezy.

    High: 49 °F

    Chance Rain
    and Breezy

  • Wednesday Night

    Wednesday Night: A 30 percent chance of rain before 1am. Mostly cloudy, with a low around 35.

    Low: 35 °F

    Chance Rain

  • Thursday

    Thursday: Mostly sunny, with a high near 43.

    High: 43 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Mostly cloudy, with a high near 42. West wind around 8 mph.
Tonight
Partly cloudy, with a low around 24. West wind 8 to 11 mph becoming northwest after midnight. Winds could gust as high as 26 mph.
Monday
Partly sunny, with a steady temperature around 28. Wind chill values between 15 and 20. North wind 11 to 16 mph, with gusts as high as 30 mph.
Monday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 17. North wind 5 to 9 mph, with gusts as high as 20 mph.
Tuesday
Increasing clouds, with a high near 42. Light and variable wind becoming south 5 to 10 mph in the morning.
Tuesday Night
Mostly cloudy, with a low around 33.
Wednesday
A 40 percent chance of rain. Mostly cloudy, with a high near 49. Breezy.
Wednesday Night
A 30 percent chance of rain before 1am. Mostly cloudy, with a low around 35.
Thursday
Mostly sunny, with a high near 43.
Thursday Night
A 30 percent chance of snow after 1am. Mostly cloudy, with a low around 28.
Friday
A 30 percent chance of rain. Partly sunny, with a high near 38.
Friday Night
A chance of rain and snow. Mostly cloudy, with a low around 25. Chance of precipitation is 30%.
Saturday
A 30 percent chance of snow. Partly sunny, with a high near 36.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Blue Point NY
 40.75°N 73.04°W (Elev. 30 ft)
Last Update:
12:47 pm EST Dec 7, 2025
Forecast Valid:
1pm EST Dec 7, 2025-6pm EST Dec 13, 2025
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation