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 >

Hazardous Weather Conditions

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Fair

36°F

2°C

Humidity 70%
Wind Speed N 16 mph
Barometer 29.90 in (1012.3 mb)
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Wind Chill26°F (-3°C)
Last update 3 Dec 5:56 am EST
Extended Forecast for

Islip NY

  • Today

    Today: Sunny, with a high near 43. Wind chill values between 25 and 35. North wind 6 to 11 mph, with gusts as high as 21 mph.

    High: 43 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 30. Wind chill values between 20 and 25. West wind 3 to 8 mph.

    Low: 30 °F

    Mostly Clear

  • Thursday

    Thursday: Increasing clouds, with a high near 40. Wind chill values between 20 and 30. West wind 9 to 16 mph, with gusts as high as 28 mph.

    High: 40 °F

    Increasing
    Clouds

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 17. Wind chill values between 10 and 15. Northwest wind 6 to 16 mph, with gusts as high as 29 mph.

    Low: 17 °F

    Mostly Clear

  • Friday

    Friday: A 20 percent chance of light snow after 4pm.  Increasing clouds, with a high near 33. North wind 5 to 8 mph becoming south in the afternoon.

    High: 33 °F

    Mostly Sunny
    then Slight
    Chance Light
    Snow

  • Friday Night

    Friday Night: A 40 percent chance of light snow after 7pm.  Mostly cloudy, with a low around 27.

    Low: 27 °F

    Chance Light
    Snow

  • Saturday

    Saturday: A 30 percent chance of light rain before 1pm.  Partly sunny, with a high near 41.

    High: 41 °F

    Chance Light
    Rain

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 29.

    Low: 29 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 41.

    High: 41 °F

    Partly Sunny

Detailed Forecast

Today
Sunny, with a high near 43. Wind chill values between 25 and 35. North wind 6 to 11 mph, with gusts as high as 21 mph.
Tonight
Mostly clear, with a low around 30. Wind chill values between 20 and 25. West wind 3 to 8 mph.
Thursday
Increasing clouds, with a high near 40. Wind chill values between 20 and 30. West wind 9 to 16 mph, with gusts as high as 28 mph.
Thursday Night
Mostly clear, with a low around 17. Wind chill values between 10 and 15. Northwest wind 6 to 16 mph, with gusts as high as 29 mph.
Friday
A 20 percent chance of light snow after 4pm. Increasing clouds, with a high near 33. North wind 5 to 8 mph becoming south in the afternoon.
Friday Night
A 40 percent chance of light snow after 7pm. Mostly cloudy, with a low around 27.
Saturday
A 30 percent chance of light rain before 1pm. Partly sunny, with a high near 41.
Saturday Night
Mostly cloudy, with a low around 29.
Sunday
Partly sunny, with a high near 41.
Sunday Night
Mostly cloudy, with a low around 25.
Monday
Partly sunny, with a high near 35.
Monday Night
Partly cloudy, with a low around 21.
Tuesday
Partly sunny, with a high near 39.
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ABOUT THIS FORECAST

 
Point Forecast:
Islip NY
 40.73°N 73.22°W (Elev. 7 ft)
3:11 am EST Dec 3, 2025
6am EST Dec 3, 2025-6pm EST Dec 9, 2025
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

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