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.

Overcast

32°F

0°C

Humidity 64%
Wind Speed NW 18 G 26 mph
Barometer 29.59 in (1001.9 mb)
Dewpoint 21°F (-6°C)
Visibility 10.00 mi
Wind Chill21°F (-6°C)
Last update 23 Feb 5:56 pm EST
Extended Forecast for

Hauppauge NY

  • Tonight

    Tonight: Patchy blowing snow. Cloudy, then gradually becoming partly cloudy, with a low around 20. Wind chill values between 10 and 15. Blustery, with a northwest wind 16 to 21 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 34 mph.

    Low: 20 °F

    Patchy
    Blowing Snow
    and Blustery

  • Tuesday

    Tuesday: Mostly sunny, with a high near 30. Wind chill values between 10 and 20. Northwest wind 9 to 11 mph, with gusts as high as 21 mph.

    High: 30 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A chance of snow showers between 1am and 4am, then a chance of snow after 4am. Increasing clouds, with a temperature falling to near 19 by 10pm, then rising to around 28 during the remainder of the night. Wind chill values between 10 and 15. Light and variable wind becoming south 5 to 7 mph after midnight. Chance of precipitation is 50%.

    Low: 19 °F⇑

    Partly Cloudy
    then Chance
    Snow Showers

  • Wednesday

    Wednesday: Snow likely, mixing with rain after 10am, then gradually ending. Cloudy, then gradually becoming mostly sunny, with a high near 39. Wind chill values between 20 and 30. South wind 10 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    High: 39 °F

    Rain/Snow
    Likely

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 28. Southwest wind around 7 mph.

    Low: 28 °F

    Partly Cloudy

  • Thursday

    Thursday: A chance of rain and snow after 1pm. Partly sunny, with a high near 37. Chance of precipitation is 50%.

    High: 37 °F

    Partly Sunny
    then Chance
    Rain/Snow

  • Thursday Night

    Thursday Night: Snow likely, mainly before 1am. Mostly cloudy, with a low around 27. Chance of precipitation is 70%.

    Low: 27 °F

    Snow Likely

  • Friday

    Friday: Mostly sunny, with a high near 38.

    High: 38 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 26.

    Low: 26 °F

    Mostly Clear

Detailed Forecast

Tonight
Patchy blowing snow. Cloudy, then gradually becoming partly cloudy, with a low around 20. Wind chill values between 10 and 15. Blustery, with a northwest wind 16 to 21 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 34 mph.
Tuesday
Mostly sunny, with a high near 30. Wind chill values between 10 and 20. Northwest wind 9 to 11 mph, with gusts as high as 21 mph.
Tuesday Night
A chance of snow showers between 1am and 4am, then a chance of snow after 4am. Increasing clouds, with a temperature falling to near 19 by 10pm, then rising to around 28 during the remainder of the night. Wind chill values between 10 and 15. Light and variable wind becoming south 5 to 7 mph after midnight. Chance of precipitation is 50%.
Wednesday
Snow likely, mixing with rain after 10am, then gradually ending. Cloudy, then gradually becoming mostly sunny, with a high near 39. Wind chill values between 20 and 30. South wind 10 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Wednesday Night
Partly cloudy, with a low around 28. Southwest wind around 7 mph.
Thursday
A chance of rain and snow after 1pm. Partly sunny, with a high near 37. Chance of precipitation is 50%.
Thursday Night
Snow likely, mainly before 1am. Mostly cloudy, with a low around 27. Chance of precipitation is 70%.
Friday
Mostly sunny, with a high near 38.
Friday Night
Mostly clear, with a low around 26.
Saturday
Mostly sunny, with a high near 41.
Saturday Night
Partly cloudy, with a low around 29.
Sunday
Partly sunny, with a high near 40.
Sunday Night
Mostly cloudy, with a low around 21.
Monday
A 40 percent chance of snow. Mostly cloudy, with a high near 32.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Hauppauge NY
 40.82°N 73.2°W (Elev. 197 ft)
Last Update:
12:58 pm EST Feb 23, 2026
Forecast Valid:
6pm EST Feb 23, 2026-6pm EST Mar 2, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation