Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Light Rain

43°F

6°C

Humidity 86%
Wind Speed N 5 mph
Barometer 30.10 in (1019.2 mb)
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Wind Chill40°F (4°C)
Last update 7 Apr 2:56 am EDT
Extended Forecast for

Islip, Long Island Mac Arthur Airport NY

  • Overnight

    Overnight: A 30 percent chance of showers, mainly before 5am.  Mostly cloudy, with a low around 39. Southeast wind around 6 mph.

    Low: 39 °F

    Chance
    Showers

  • Tuesday

    Tuesday: Partly sunny, with a high near 52. Breezy, with a southwest wind 10 to 15 mph becoming northwest 18 to 23 mph in the afternoon. Winds could gust as high as 34 mph.

    High: 52 °F

    Partly Sunny
    then Mostly
    Sunny and
    Breezy

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 28. Wind chill values between 20 and 25. Blustery, with a north wind 13 to 21 mph.

    Low: 28 °F

    Mostly Clear
    and Blustery
    then Clear

  • Wednesday

    Wednesday: Sunny, with a high near 46. Wind chill values between 20 and 30 early. North wind 10 to 15 mph becoming southeast in the afternoon.

    High: 46 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 30. South wind 5 to 10 mph becoming light southeast  after midnight.

    Low: 30 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 50.

    High: 50 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 38.

    Low: 38 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 58.

    High: 58 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 44.

    Low: 44 °F

    Partly Cloudy

Detailed Forecast

Overnight
A 30 percent chance of showers, mainly before 5am. Mostly cloudy, with a low around 39. Southeast wind around 6 mph.
Tuesday
Partly sunny, with a high near 52. Breezy, with a southwest wind 10 to 15 mph becoming northwest 18 to 23 mph in the afternoon. Winds could gust as high as 34 mph.
Tuesday Night
Mostly clear, with a low around 28. Wind chill values between 20 and 25. Blustery, with a north wind 13 to 21 mph.
Wednesday
Sunny, with a high near 46. Wind chill values between 20 and 30 early. North wind 10 to 15 mph becoming southeast in the afternoon.
Wednesday Night
Mostly clear, with a low around 30. South wind 5 to 10 mph becoming light southeast after midnight.
Thursday
Mostly sunny, with a high near 50.
Thursday Night
Partly cloudy, with a low around 38.
Friday
Mostly sunny, with a high near 58.
Friday Night
Partly cloudy, with a low around 44.
Saturday
Mostly sunny, with a high near 64.
Saturday Night
Mostly clear, with a low around 42.
Sunday
Sunny, with a high near 58.
Sunday Night
Mostly cloudy, with a low around 45.
Monday
Partly sunny, with a high near 64.
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ABOUT THIS FORECAST

 
Point Forecast:
Islip, Long Island Mac Arthur Airport NY
 40.81°N 73.11°W (Elev. 98 ft)
3:08 am EDT Apr 7, 2026
3am EDT Apr 7, 2026-6pm EDT Apr 13, 2026
 
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Additional Resources

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