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

30°F

-1°C

Humidity 75%
Wind Speed N 14 mph
Barometer 30.07 in (1018.4 mb)
Dewpoint 23°F (-5°C)
Visibility 10.00 mi
Wind Chill19°F (-7°C)
Last update 27 Dec 11:56 am EST
Extended Forecast for

Blue Point NY

  • This Afternoon

    This Afternoon: Mostly cloudy, with a temperature falling to around 30 by 5pm. Wind chill values between 25 and 30. North wind 9 to 14 mph.

    High: 34 °F⇓

    Mostly Cloudy

  • Tonight

    Tonight: Partly cloudy, with a low around 21. Northwest wind 3 to 6 mph.

    Low: 21 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 42. Wind chill values between 15 and 25. Light and variable wind becoming west 5 to 8 mph in the morning.

    High: 42 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Rain. Temperature rising to around 43 by 5am. South wind 6 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 36 °F⇑

    Rain

  • Monday

    Monday: Rain. High near 51. Southwest wind 10 to 15 mph, with gusts as high as 31 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 51 °F

    Rain

  • Monday Night

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

    Low: 26 °F

    Partly Cloudy
    then Partly
    Cloudy and
    Breezy

  • Tuesday

    Tuesday: Partly sunny, with a high near 33. Breezy.

    High: 33 °F

    Partly Sunny
    and Breezy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 25.

    Low: 25 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 37.

    High: 37 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Mostly cloudy, with a temperature falling to around 30 by 5pm. Wind chill values between 25 and 30. North wind 9 to 14 mph.
Tonight
Partly cloudy, with a low around 21. Northwest wind 3 to 6 mph.
Sunday
Partly sunny, with a high near 42. Wind chill values between 15 and 25. Light and variable wind becoming west 5 to 8 mph in the morning.
Sunday Night
Rain. Temperature rising to around 43 by 5am. South wind 6 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday
Rain. High near 51. Southwest wind 10 to 15 mph, with gusts as high as 31 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 26. Breezy.
Tuesday
Partly sunny, with a high near 33. Breezy.
Tuesday Night
Mostly cloudy, with a low around 25.
Wednesday
Partly sunny, with a high near 37.
Wednesday Night
Mostly cloudy, with a low around 25.
New Year's Day
A 30 percent chance of snow. Partly sunny, with a high near 35.
Thursday Night
Mostly cloudy, with a low around 19.
Friday
Sunny, with a high near 28.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Blue Point NY
 40.75°N 73.04°W (Elev. 30 ft)
Last Update:
5:20 am EST Dec 27, 2025
Forecast Valid:
12pm EST Dec 27, 2025-6pm EST Jan 2, 2026
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation