Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Fog/Mist and Breezy

47°F

8°C

Humidity 93%
Wind Speed SE 21 G 32 mph
Barometer 29.95 in (1014.1 mb)
Dewpoint 45°F (7°C)
Visibility 6.00 mi
Wind Chill39°F (4°C)
Last update 16 Mar 3:56 am EDT
Extended Forecast for

Islip, Long Island Mac Arthur Airport NY

Wind Advisory March 16, 02:00pm until March 17, 04:00am
Click here for hazard details and duration
Wind Advisory
  • Overnight

    Overnight: Showers, with thunderstorms also possible after 5am.  Areas of fog after 5am. Steady temperature around 48. Southeast wind around 16 mph, with gusts as high as 32 mph.  Chance of precipitation is 100%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 48 °F

    Showers and
    Areas Fog

  • Monday

    Monday: Showers and possibly a thunderstorm.  Areas of fog. High near 58. Breezy, with a south wind 15 to 21 mph, with gusts as high as 39 mph.  Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 58 °F

    Showers and
    Areas Fog

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm before 2am, then a chance of showers.  Areas of fog before 2am. Low around 35. Breezy, with a south wind 16 to 24 mph becoming west after midnight. Winds could gust as high as 50 mph.  Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 35 °F

    Showers and
    Areas Fog

  • Tuesday

    Tuesday: Mostly sunny, with a steady temperature around 39. West wind 13 to 15 mph, with gusts as high as 26 mph.

    High: 39 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 24. Northwest wind 8 to 10 mph, with gusts as high as 21 mph.

    Low: 24 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 38.

    High: 38 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 28.

    Low: 28 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 43.

    High: 43 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 34.

    Low: 34 °F

    Partly Cloudy

Detailed Forecast

Overnight
Showers, with thunderstorms also possible after 5am. Areas of fog after 5am. Steady temperature around 48. Southeast wind around 16 mph, with gusts as high as 32 mph. Chance of precipitation is 100%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday
Showers and possibly a thunderstorm. Areas of fog. High near 58. Breezy, with a south wind 15 to 21 mph, with gusts as high as 39 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Monday Night
Showers and possibly a thunderstorm before 2am, then a chance of showers. Areas of fog before 2am. Low around 35. Breezy, with a south wind 16 to 24 mph becoming west after midnight. Winds could gust as high as 50 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday
Mostly sunny, with a steady temperature around 39. West wind 13 to 15 mph, with gusts as high as 26 mph.
Tuesday Night
Partly cloudy, with a low around 24. Northwest wind 8 to 10 mph, with gusts as high as 21 mph.
Wednesday
Mostly sunny, with a high near 38.
Wednesday Night
Mostly cloudy, with a low around 28.
Thursday
Mostly sunny, with a high near 43.
Thursday Night
Partly cloudy, with a low around 34.
Friday
Mostly sunny, with a high near 50.
Friday Night
Mostly cloudy, with a low around 34.
Saturday
A 40 percent chance of rain. Mostly cloudy, with a high near 47.
Saturday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 33.
Sunday
A 30 percent chance of rain. Partly sunny, with a high near 45.
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ABOUT THIS FORECAST

 
Point Forecast:
Islip, Long Island Mac Arthur Airport NY
 40.8°N 73.09°W (Elev. 98 ft)
2:29 am EDT Mar 16, 2026
4am EDT Mar 16, 2026-6pm EDT Mar 22, 2026
 
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Additional Resources

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