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

61°F

16°C

Humidity 67%
Wind Speed SW 16 G 30 mph
Barometer 29.62 in (1002.9 mb)
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Last update 5 Nov 6:56 pm EST
Extended Forecast for

Islip, Long Island Mac Arthur Airport NY

Wind Advisory November 5, 09:00pm until November 6, 08:00am
Click here for hazard details and duration
Wind Advisory

  • Tonight

    Tonight: A chance of showers between 10pm and midnight. Mostly cloudy, then gradually becoming mostly clear, with a low around 43. Breezy, with a southwest wind 15 to 24 mph becoming northwest after midnight. Winds could gust as high as 49 mph. Chance of precipitation is 30%.

    Low: 43 °F

    Breezy.
    Chance
    Showers then
    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 54. Northwest wind 13 to 17 mph, with gusts as high as 38 mph.

    High: 54 °F

    Sunny

  • Thursday Night

    Thursday Night: Areas of frost after 1am. Otherwise, mostly clear, with a low around 36. Northwest wind 5 to 9 mph becoming calm after midnight.

    Low: 36 °F

    Mostly Clear
    then Areas
    Frost

  • Friday

    Friday: Partly sunny, with a high near 62. Light south wind increasing to 10 to 15 mph in the morning. Winds could gust as high as 25 mph.

    High: 62 °F

    Partly Sunny

  • Friday Night

    Friday Night: Rain likely, mainly after 1am. Mostly cloudy, with a low around 52. South wind 10 to 15 mph, with gusts as high as 28 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 52 °F

    Chance Rain
    then Rain
    Likely

  • Saturday

    Saturday: Partly sunny, with a high near 64.

    High: 64 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 48.

    Low: 48 °F

    Partly Cloudy

  • Sunday

    Sunday: Rain likely. Mostly cloudy, with a high near 62. Chance of precipitation is 60%.

    High: 62 °F

    Rain Likely

  • Sunday Night

    Sunday Night: A 40 percent chance of rain before 1am. Mostly cloudy, with a low around 40.

    Low: 40 °F

    Chance Rain

Detailed Forecast

Tonight
A chance of showers between 10pm and midnight. Mostly cloudy, then gradually becoming mostly clear, with a low around 43. Breezy, with a southwest wind 15 to 24 mph becoming northwest after midnight. Winds could gust as high as 49 mph. Chance of precipitation is 30%.
Thursday
Sunny, with a high near 54. Northwest wind 13 to 17 mph, with gusts as high as 38 mph.
Thursday Night
Areas of frost after 1am. Otherwise, mostly clear, with a low around 36. Northwest wind 5 to 9 mph becoming calm after midnight.
Friday
Partly sunny, with a high near 62. Light south wind increasing to 10 to 15 mph in the morning. Winds could gust as high as 25 mph.
Friday Night
Rain likely, mainly after 1am. Mostly cloudy, with a low around 52. South wind 10 to 15 mph, with gusts as high as 28 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Partly sunny, with a high near 64.
Saturday Night
Partly cloudy, with a low around 48.
Sunday
Rain likely. Mostly cloudy, with a high near 62. Chance of precipitation is 60%.
Sunday Night
A 40 percent chance of rain before 1am. Mostly cloudy, with a low around 40.
Monday
Mostly sunny, with a high near 49.
Monday Night
Partly cloudy, with a low around 32.
Veterans Day
Mostly sunny, with a high near 47.
Tuesday Night
Partly cloudy, with a low around 36.
Wednesday
Mostly sunny, with a high near 53.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Islip, Long Island Mac Arthur Airport NY
 40.78°N 73.09°W (Elev. 49 ft)
Last Update:
5:00 pm EST Nov 5, 2025
Forecast Valid:
7pm EST Nov 5, 2025-6pm EST Nov 12, 2025
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation