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

75°F

24°C

Humidity 90%
Wind Speed N 5 mph
Barometer 30.07 in (1018.1 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Last update 15 Jul 5:56 am EDT
Extended Forecast for

5 Miles SSE Blue Point NY

  • Today

    Today: Showers and thunderstorms likely, mainly before 11am. Patchy fog before 9am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 79. South wind 6 to 9 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    High: 79 °F

    Showers
    Likely and
    Patchy Fog
    then Slight
    Chance
    T-storms

  • Tonight

    Tonight: Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 74. Southwest wind 5 to 8 mph.

    Low: 74 °F

    Patchy Fog

  • Wednesday

    Wednesday: Partly sunny, with a high near 80. South wind 7 to 11 mph.

    High: 80 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A 50 percent chance of showers and thunderstorms, mainly after 8pm. Cloudy, with a low around 74. Southwest wind 10 to 13 mph.

    Low: 74 °F

    Chance
    T-storms

  • Thursday

    Thursday: A 30 percent chance of showers and thunderstorms, mainly before 2pm. Partly sunny, with a high near 82. Southwest wind 11 to 16 mph.

    High: 82 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 76.

    Low: 76 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 82.

    High: 82 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 71.

    Low: 71 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 78.

    High: 78 °F

    Mostly Sunny

Detailed Forecast

Today
Showers and thunderstorms likely, mainly before 11am. Patchy fog before 9am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 79. South wind 6 to 9 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Tonight
Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 74. Southwest wind 5 to 8 mph.
Wednesday
Partly sunny, with a high near 80. South wind 7 to 11 mph.
Wednesday Night
A 50 percent chance of showers and thunderstorms, mainly after 8pm. Cloudy, with a low around 74. Southwest wind 10 to 13 mph.
Thursday
A 30 percent chance of showers and thunderstorms, mainly before 2pm. Partly sunny, with a high near 82. Southwest wind 11 to 16 mph.
Thursday Night
Partly cloudy, with a low around 76.
Friday
Mostly sunny, with a high near 82.
Friday Night
Mostly cloudy, with a low around 71.
Saturday
Mostly sunny, with a high near 78.
Saturday Night
Mostly cloudy, with a low around 71.
Sunday
A 40 percent chance of showers. Partly sunny, with a high near 78.
Sunday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 72.
Monday
A 30 percent chance of showers. Partly sunny, with a high near 79.
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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:
6:03 am EDT Jul 15, 2025
Forecast Valid:
6am EDT Jul 15, 2025-6pm EDT Jul 21, 2025
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation