National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Mostly Cloudy

81°F

27°C

Humidity 45%
Wind Speed S 7 mph
Barometer 30.10 in (1019.3 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Heat Index81°F (27°C)
Last update 4 Aug 3:56 pm EDT
Extended Forecast for

Blue Point NY

  • Tonight

    Tonight: Mostly cloudy, with a low around 65. Southeast wind around 5 mph becoming calm in the evening.

    Low: 65 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 81. Calm wind becoming south 5 to 8 mph in the afternoon.

    High: 81 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 72. South wind around 7 mph. Chance of precipitation is 20%.

    Low: 72 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Thursday

    Thursday: Mostly cloudy, then gradually becoming sunny, with a high near 84. Southwest wind 6 to 13 mph.

    High: 84 °F

    Decreasing
    Clouds

  • Thursday Night

    Thursday Night: A slight chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Partly cloudy, with a low around 73. Southwest wind 7 to 11 mph. Chance of precipitation is 20%.

    Low: 73 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Friday

    Friday: Sunny, with a high near 85.

    High: 85 °F

    Sunny

  • Friday Night

    Friday Night: A 30 percent chance of showers before 2am. Partly cloudy, with a low around 73.

    Low: 73 °F

    Chance
    Showers

  • Saturday

    Saturday: Mostly sunny, with a high near 83.

    High: 83 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 73.

    Low: 73 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 65. Southeast wind around 5 mph becoming calm in the evening.
Wednesday
Partly sunny, with a high near 81. Calm wind becoming south 5 to 8 mph in the afternoon.
Wednesday Night
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 72. South wind around 7 mph. Chance of precipitation is 20%.
Thursday
Mostly cloudy, then gradually becoming sunny, with a high near 84. Southwest wind 6 to 13 mph.
Thursday Night
A slight chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Partly cloudy, with a low around 73. Southwest wind 7 to 11 mph. Chance of precipitation is 20%.
Friday
Sunny, with a high near 85.
Friday Night
A 30 percent chance of showers before 2am. Partly cloudy, with a low around 73.
Saturday
Mostly sunny, with a high near 83.
Saturday Night
Partly cloudy, with a low around 73.
Sunday
Mostly sunny, with a high near 83.
Sunday Night
Partly cloudy, with a low around 73.
Monday
Sunny, with a high near 84.
Monday Night
Partly cloudy, with a low around 73.
Tuesday
A 40 percent chance of showers. Mostly sunny, with a high near 84.
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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:
4:10 pm EDT Aug 4, 2026
Forecast Valid:
4pm EDT Aug 4, 2026-6pm EDT Aug 11, 2026
 
Forecast Discussion
 
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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