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.

Mostly Cloudy and Breezy

17°F

-8°C

Humidity 54%
Wind Speed N 21 G 31 mph
Barometer 29.83 in (1010.2 mb)
Dewpoint 3°F (-16°C)
Visibility 10.00 mi
Wind Chill0°F (-18°C)
Last update 1 Feb 11:56 pm EST
Extended Forecast for

Hauppauge NY

  • Overnight

    Overnight: Partly cloudy, with a low around 12. Wind chill values between zero and 5. Northwest wind 9 to 11 mph, with gusts as high as 21 mph.

    Low: 12 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 29. Wind chill values between zero and 10. Northwest wind 9 to 11 mph.

    High: 29 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 12. Light northwest wind.

    Low: 12 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 31. Wind chill values between 10 and 20. Calm wind becoming west around 6 mph in the afternoon.

    High: 31 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 19. Light west wind.

    Low: 19 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 30.

    High: 30 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 12.

    Low: 12 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 28.

    High: 28 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 12.

    Low: 12 °F

    Partly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 12. Wind chill values between zero and 5. Northwest wind 9 to 11 mph, with gusts as high as 21 mph.
Monday
Sunny, with a high near 29. Wind chill values between zero and 10. Northwest wind 9 to 11 mph.
Monday Night
Mostly clear, with a low around 12. Light northwest wind.
Tuesday
Sunny, with a high near 31. Wind chill values between 10 and 20. Calm wind becoming west around 6 mph in the afternoon.
Tuesday Night
Mostly cloudy, with a low around 19. Light west wind.
Wednesday
Partly sunny, with a high near 30.
Wednesday Night
Partly cloudy, with a low around 12.
Thursday
Mostly sunny, with a high near 28.
Thursday Night
Partly cloudy, with a low around 12.
Friday
A 30 percent chance of snow after 1pm. Mostly cloudy, with a high near 30.
Friday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 12.
Saturday
Mostly sunny and cold, with a high near 20.
Saturday Night
Partly cloudy, with a low around 4.
Sunday
Mostly sunny and cold, with a high near 19.
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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:
6:39 pm EST Feb 1, 2026
Forecast Valid:
12am EST Feb 2, 2026-6pm EST Feb 8, 2026
 
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Additional Resources

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Chance of Precipitation