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.

A Few Clouds

43°F

6°C

Humidity 38%
Wind Speed SW 15 mph
Barometer 30.33 in (1027.1 mb)
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Wind Chill36°F (2°C)
Last update 24 Mar 4:56 pm EDT
Extended Forecast for

5 Miles SSE Blue Point NY

  • Tonight

    Tonight: Increasing clouds, with a low around 31. Wind chill values between 25 and 30. South wind 13 to 16 mph.

    Low: 31 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Partly sunny, with a high near 47. Wind chill values between 25 and 35 early. West wind 9 to 11 mph.

    High: 47 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Cloudy, with a low around 38. South wind around 14 mph.

    Low: 38 °F

    Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 53. Breezy, with a southwest wind 16 to 22 mph.

    High: 53 °F

    Cloudy then
    Partly Sunny
    and Breezy

  • Thursday Night

    Thursday Night: Rain, mainly after 2am. Low around 45. Breezy, with a southwest wind 22 to 25 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 45 °F

    Breezy.
    Slight Chance
    Rain then
    Rain

  • Friday

    Friday: Rain likely, mainly before 8am. Mostly cloudy, with a high near 50. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 50 °F

    Rain Likely
    then Chance
    Rain

  • Friday Night

    Friday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 31.

    Low: 31 °F

    Decreasing
    Clouds

  • Saturday

    Saturday: Sunny, with a high near 39.

    High: 39 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 35.

    Low: 35 °F

    Partly Cloudy

Detailed Forecast

Tonight
Increasing clouds, with a low around 31. Wind chill values between 25 and 30. South wind 13 to 16 mph.
Wednesday
Partly sunny, with a high near 47. Wind chill values between 25 and 35 early. West wind 9 to 11 mph.
Wednesday Night
Cloudy, with a low around 38. South wind around 14 mph.
Thursday
Mostly cloudy, with a high near 53. Breezy, with a southwest wind 16 to 22 mph.
Thursday Night
Rain, mainly after 2am. Low around 45. Breezy, with a southwest wind 22 to 25 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Friday
Rain likely, mainly before 8am. Mostly cloudy, with a high near 50. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 31.
Saturday
Sunny, with a high near 39.
Saturday Night
Partly cloudy, with a low around 35.
Sunday
Sunny, with a high near 44.
Sunday Night
Partly cloudy, with a low around 39.
Monday
Partly sunny, with a high near 47. Breezy.
Monday Night
Partly cloudy, with a low around 40. Breezy.
Tuesday
Partly sunny, with a high near 47. Breezy.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SSE Blue Point NY
 40.68°N 72.99°W (Elev. 0 ft)
Last Update:
4:34 pm EDT Mar 24, 2026
Forecast Valid:
5pm EDT Mar 24, 2026-6pm EDT Mar 31, 2026
 
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Additional Resources

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Chance of Precipitation