National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

A Few Clouds

35°F

2°C

Humidity 42%
Wind Speed N 17 mph
Barometer 30.61 in (1036.6 mb)
Dewpoint 14°F (-10°C)
Visibility 10.00 mi
Wind Chill25°F (-4°C)
Last update 8 Apr 8:56 am EDT
Extended Forecast for

Hauppauge NY

  • Today

    Today: Sunny, with a high near 48. Wind chill values between 25 and 35 early. North wind 10 to 13 mph becoming southeast in the afternoon.

    High: 48 °F

    Sunny

  • Tonight

    Tonight: Patchy frost after midnight. Otherwise, mostly clear, with a low around 32. South wind 3 to 7 mph.

    Low: 32 °F

    Clear then
    Patchy Frost

  • Thursday

    Thursday: Patchy frost before 9am. Otherwise, sunny, with a high near 52. Southeast wind 5 to 8 mph.

    High: 52 °F

    Patchy Frost
    then Sunny

  • Thursday Night

    Thursday Night: Patchy frost after 4am. Otherwise, mostly clear, with a low around 38. South wind around 6 mph becoming calm after midnight.

    Low: 38 °F

    Mostly Clear
    then Patchy
    Frost

  • Friday

    Friday: Patchy frost before 7am. Otherwise, sunny, with a high near 57. Calm wind becoming south 5 to 8 mph in the afternoon.

    High: 57 °F

    Patchy Frost
    then Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 46.

    Low: 46 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, then gradually becoming sunny, with a high near 60.

    High: 60 °F

    Becoming
    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 41.

    Low: 41 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 55.

    High: 55 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 48. Wind chill values between 25 and 35 early. North wind 10 to 13 mph becoming southeast in the afternoon.
Tonight
Patchy frost after midnight. Otherwise, mostly clear, with a low around 32. South wind 3 to 7 mph.
Thursday
Patchy frost before 9am. Otherwise, sunny, with a high near 52. Southeast wind 5 to 8 mph.
Thursday Night
Patchy frost after 4am. Otherwise, mostly clear, with a low around 38. South wind around 6 mph becoming calm after midnight.
Friday
Patchy frost before 7am. Otherwise, sunny, with a high near 57. Calm wind becoming south 5 to 8 mph in the afternoon.
Friday Night
Mostly cloudy, with a low around 46.
Saturday
Partly sunny, then gradually becoming sunny, with a high near 60.
Saturday Night
Clear, with a low around 41.
Sunday
Sunny, with a high near 55.
Sunday Night
Mostly cloudy, with a low around 45.
Monday
Partly sunny, with a high near 63.
Monday Night
Mostly cloudy, with a low around 53.
Tuesday
Partly sunny, with a high near 70.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Hauppauge NY
 40.82°N 73.2°W (Elev. 197 ft)
Last Update:
3:28 am EDT Apr 8, 2026
Forecast Valid:
9am EDT Apr 8, 2026-6pm EDT Apr 14, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation