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

19°F

-7°C

Humidity 68%
Wind Speed Calm
Barometer 30.16 in (1021.4 mb)
Dewpoint 10°F (-12°C)
Visibility 10.00 mi
Last update 10 Feb 7:56 am EST
Extended Forecast for

Blue Point NY

  • Today

    Today: A slight chance of snow between 1pm and 4pm. Mostly cloudy, with a high near 38. Wind chill values between 20 and 30. Calm wind becoming south around 6 mph in the afternoon. Chance of precipitation is 20%.

    High: 38 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Tonight

    Tonight: A chance of rain and sleet before 10pm, then rain between 10pm and 4am. Low around 29. South wind around 6 mph becoming west after midnight. Chance of precipitation is 80%. Little or no sleet accumulation expected.

    Low: 29 °F

    Rain/Sleet
    then Rain

  • Wednesday

    Wednesday: Mostly sunny, with a high near 38. Wind chill values between 25 and 30. West wind 8 to 14 mph, with gusts as high as 26 mph.

    High: 38 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 23. Wind chill values between 15 and 20. West wind around 10 mph, with gusts as high as 25 mph.

    Low: 23 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 34. Northwest wind 10 to 14 mph.

    High: 34 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 20.

    Low: 20 °F

    Mostly Cloudy

  • Friday

    Friday: Sunny, with a high near 34.

    High: 34 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 24.

    Low: 24 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 37.

    High: 37 °F

    Sunny

Detailed Forecast

Today
A slight chance of snow between 1pm and 4pm. Mostly cloudy, with a high near 38. Wind chill values between 20 and 30. Calm wind becoming south around 6 mph in the afternoon. Chance of precipitation is 20%.
Tonight
A chance of rain and sleet before 10pm, then rain between 10pm and 4am. Low around 29. South wind around 6 mph becoming west after midnight. Chance of precipitation is 80%. Little or no sleet accumulation expected.
Wednesday
Mostly sunny, with a high near 38. Wind chill values between 25 and 30. West wind 8 to 14 mph, with gusts as high as 26 mph.
Wednesday Night
Partly cloudy, with a low around 23. Wind chill values between 15 and 20. West wind around 10 mph, with gusts as high as 25 mph.
Thursday
Sunny, with a high near 34. Northwest wind 10 to 14 mph.
Thursday Night
Mostly cloudy, with a low around 20.
Friday
Sunny, with a high near 34.
Friday Night
Partly cloudy, with a low around 24.
Saturday
Sunny, with a high near 37.
Saturday Night
Partly cloudy, with a low around 24.
Sunday
Mostly cloudy, with a high near 38.
Sunday Night
Rain likely. Cloudy, with a low around 30. Chance of precipitation is 60%.
Washington's Birthday
Rain likely. Cloudy, with a high near 40. Chance of precipitation is 60%.
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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:
2:28 am EST Feb 10, 2026
Forecast Valid:
7am EST Feb 10, 2026-6pm EST Feb 16, 2026
 
Forecast Discussion
 
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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