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.

Fair

28°F

-2°C

Humidity 88%
Wind Speed Calm
Barometer 30.13 in (1020.4 mb)
Dewpoint 25°F (-4°C)
Visibility 9.00 mi
Last update 28 Feb 12:56 am EST
Extended Forecast for

Blue Point NY

  • Overnight

    Overnight: Patchy fog. Otherwise, mostly clear, with a low around 30. Southeast wind around 5 mph.

    Low: 30 °F

    Patchy Fog

  • Saturday

    Saturday: Patchy fog before 8am. Otherwise, mostly sunny, with a high near 44. South wind 5 to 8 mph.

    High: 44 °F

    Patchy Fog
    then Mostly
    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 28. Light and variable wind becoming north 5 to 8 mph after midnight.

    Low: 28 °F

    Partly Cloudy

  • Sunday

    Sunday: Snow likely, mainly between 10am and 4pm. Increasing clouds, with a high near 37. Wind chill values between 25 and 30. North wind 7 to 9 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

    High: 37 °F

    Snow Likely

  • Sunday Night

    Sunday Night: A 30 percent chance of snow before 7pm. Mostly clear, with a low around 15. North wind 9 to 14 mph.

    Low: 15 °F

    Chance Snow
    then Mostly
    Clear

  • Monday

    Monday: Sunny, with a high near 27.

    High: 27 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 19.

    Low: 19 °F

    Mostly Clear

  • Tuesday

    Tuesday: A 50 percent chance of rain after 1pm. Mostly cloudy, with a high near 41.

    High: 41 °F

    Partly Sunny
    then Chance
    Rain

  • Tuesday Night

    Tuesday Night: Rain. Low around 35. Chance of precipitation is 90%.

    Low: 35 °F

    Rain

Detailed Forecast

Overnight
Patchy fog. Otherwise, mostly clear, with a low around 30. Southeast wind around 5 mph.
Saturday
Patchy fog before 8am. Otherwise, mostly sunny, with a high near 44. South wind 5 to 8 mph.
Saturday Night
Partly cloudy, with a low around 28. Light and variable wind becoming north 5 to 8 mph after midnight.
Sunday
Snow likely, mainly between 10am and 4pm. Increasing clouds, with a high near 37. Wind chill values between 25 and 30. North wind 7 to 9 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
Sunday Night
A 30 percent chance of snow before 7pm. Mostly clear, with a low around 15. North wind 9 to 14 mph.
Monday
Sunny, with a high near 27.
Monday Night
Mostly clear, with a low around 19.
Tuesday
A 50 percent chance of rain after 1pm. Mostly cloudy, with a high near 41.
Tuesday Night
Rain. Low around 35. Chance of precipitation is 90%.
Wednesday
A 40 percent chance of rain before 1pm. Mostly cloudy, with a high near 45.
Wednesday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 33.
Thursday
A 40 percent chance of rain. Cloudy, with a high near 45.
Thursday Night
A 50 percent chance of rain. Cloudy, with a low around 38.
Friday
A 30 percent chance of rain. Cloudy, with a high near 48.
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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:
12:55 am EST Feb 28, 2026
Forecast Valid:
1am EST Feb 28, 2026-6pm EST Mar 6, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation