Winter Storm in the Central Appalachians through the Northeast; Heavy Snow in the Great Basin and Rockies

A winter storm will impact the central Appalachians to the Northeast through the night. Accumulating snow is expected for interior New England and the northern Mid-Atlantic. Scattered showers and occasional thunderstorms will persist across Florida and the Southeast coast. Locally heavy mountain snow is expected in the Great Basin and Rockies over the next couple of days. Read More >

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Mostly Cloudy and Breezy

36°F

2°C

Humidity 73%
Wind Speed NW 23 G 38 mph
Barometer 29.82 in (1009.9 mb)
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Wind Chill24°F (-4°C)
Last update 3 Dec 3:56 am EST
Extended Forecast for

Islip, Long Island Mac Arthur Airport NY

  • Today

    Today: Sunny, with a high near 43. Wind chill values between 20 and 30. Northwest wind 7 to 13 mph.

    High: 43 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 28. Wind chill values between 20 and 25. West wind 5 to 10 mph.

    Low: 28 °F

    Mostly Clear

  • Thursday

    Thursday: Increasing clouds, with a high near 42. Wind chill values between 20 and 30. Breezy, with a west wind 10 to 20 mph, with gusts as high as 30 mph.

    High: 42 °F

    Mostly Sunny
    then Partly
    Sunny and
    Breezy

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 18. Wind chill values between 10 and 15. Northwest wind 13 to 18 mph decreasing to 7 to 12 mph after midnight. Winds could gust as high as 30 mph.

    Low: 18 °F

    Mostly Clear

  • Friday

    Friday: Increasing clouds, with a high near 33. North wind 5 to 9 mph becoming south in the afternoon.

    High: 33 °F

    Increasing
    Clouds

  • Friday Night

    Friday Night: A 40 percent chance of light snow.  Mostly cloudy, with a low around 27.

    Low: 27 °F

    Chance Light
    Snow

  • Saturday

    Saturday: Partly sunny, with a high near 43.

    High: 43 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 30.

    Low: 30 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 42.

    High: 42 °F

    Partly Sunny

Detailed Forecast

Today
Sunny, with a high near 43. Wind chill values between 20 and 30. Northwest wind 7 to 13 mph.
Tonight
Mostly clear, with a low around 28. Wind chill values between 20 and 25. West wind 5 to 10 mph.
Thursday
Increasing clouds, with a high near 42. Wind chill values between 20 and 30. Breezy, with a west wind 10 to 20 mph, with gusts as high as 30 mph.
Thursday Night
Mostly clear, with a low around 18. Wind chill values between 10 and 15. Northwest wind 13 to 18 mph decreasing to 7 to 12 mph after midnight. Winds could gust as high as 30 mph.
Friday
Increasing clouds, with a high near 33. North wind 5 to 9 mph becoming south in the afternoon.
Friday Night
A 40 percent chance of light snow. Mostly cloudy, with a low around 27.
Saturday
Partly sunny, with a high near 43.
Saturday Night
Mostly cloudy, with a low around 30.
Sunday
Partly sunny, with a high near 42.
Sunday Night
Mostly cloudy, with a low around 25.
Monday
Partly sunny, with a high near 37.
Monday Night
Partly cloudy, with a low around 21.
Tuesday
Partly sunny, with a high near 40.
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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)
3:11 am EST Dec 3, 2025
4am EST Dec 3, 2025-6pm EST Dec 9, 2025
 
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