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

47°F

8°C

Humidity 41%
Wind Speed S 9 G 18 mph
Barometer 30.35 in (1027.9 mb)
Dewpoint 24°F (-4°C)
Visibility 10.00 mi
Wind Chill43°F (6°C)
Last update 25 Mar 1:56 pm EDT
Extended Forecast for

5 Miles SSE Blue Point NY

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 44. South wind around 10 mph.

    High: 44 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 39. South wind 14 to 16 mph.

    Low: 39 °F

    Mostly Cloudy

  • Thursday

    Thursday: A 20 percent chance of showers before 11am. Partly sunny, with a high near 49. Breezy, with a southwest wind 20 to 22 mph.

    High: 49 °F

    Breezy.
    Slight Chance
    Showers then
    Partly Sunny

  • Thursday Night

    Thursday Night: Showers, mainly after 2am. Low around 46. Breezy, with a southwest wind 20 to 24 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 46 °F

    Breezy.
    Slight Chance
    Showers then
    Showers

  • Friday

    Friday: Showers, mainly before 2pm. High near 48. North wind around 15 mph. Chance of precipitation is 80%.

    High: 48 °F

    Showers

  • Friday Night

    Friday Night: A 30 percent chance of showers before 8pm. Mostly cloudy, with a low around 32.

    Low: 32 °F

    Chance
    Showers then
    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 40.

    High: 40 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 33.

    Low: 33 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 42.

    High: 42 °F

    Sunny

Detailed Forecast

This Afternoon
Partly sunny, with a high near 44. South wind around 10 mph.
Tonight
Mostly cloudy, with a low around 39. South wind 14 to 16 mph.
Thursday
A 20 percent chance of showers before 11am. Partly sunny, with a high near 49. Breezy, with a southwest wind 20 to 22 mph.
Thursday Night
Showers, mainly after 2am. Low around 46. Breezy, with a southwest wind 20 to 24 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Friday
Showers, mainly before 2pm. High near 48. North wind around 15 mph. Chance of precipitation is 80%.
Friday Night
A 30 percent chance of showers before 8pm. Mostly cloudy, with a low around 32.
Saturday
Mostly sunny, with a high near 40.
Saturday Night
Partly cloudy, with a low around 33.
Sunday
Sunny, with a high near 42.
Sunday Night
Partly cloudy, with a low around 39. Breezy.
Monday
Mostly cloudy, with a high near 48. Breezy.
Monday Night
Mostly cloudy, with a low around 42. Breezy.
Tuesday
Mostly cloudy, with a high near 47.
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Forecast Area
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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:
2:22 pm EDT Mar 25, 2026
Forecast Valid:
2pm EDT Mar 25, 2026-6pm EDT Mar 31, 2026
 
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Additional Resources

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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