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

28°F

-2°C

Humidity 69%
Wind Speed W 9 mph
Barometer 30.10 in (1019.2 mb)
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Wind Chill19°F (-7°C)
Last update 14 Feb 7:56 am EST
Extended Forecast for

Hauppauge NY

  • Today

    Today: Mostly sunny, with a high near 40. Wind chill values between 25 and 35. West wind 6 to 9 mph.

    High: 40 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 25. Calm wind.

    Low: 25 °F

    Mostly Clear

  • Sunday

    Sunday: Partly sunny, with a high near 37. Calm wind becoming northeast around 6 mph in the afternoon.

    High: 37 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: A 40 percent chance of snow, mainly after 1am. Mostly cloudy, with a low around 28. Calm wind becoming northeast around 5 mph after midnight.

    Low: 28 °F

    Chance Snow

  • Washington's Birthday

    Washington's Birthday: Partly sunny, with a high near 39. Northeast wind 3 to 6 mph.

    High: 39 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 28.

    Low: 28 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 42.

    High: 42 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 33.

    Low: 33 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A 50 percent chance of rain. Cloudy, with a high near 42.

    High: 42 °F

    Chance Rain

Detailed Forecast

Today
Mostly sunny, with a high near 40. Wind chill values between 25 and 35. West wind 6 to 9 mph.
Tonight
Mostly clear, with a low around 25. Calm wind.
Sunday
Partly sunny, with a high near 37. Calm wind becoming northeast around 6 mph in the afternoon.
Sunday Night
A 40 percent chance of snow, mainly after 1am. Mostly cloudy, with a low around 28. Calm wind becoming northeast around 5 mph after midnight.
Washington's Birthday
Partly sunny, with a high near 39. Northeast wind 3 to 6 mph.
Monday Night
Mostly cloudy, with a low around 28.
Tuesday
Partly sunny, with a high near 42.
Tuesday Night
Mostly cloudy, with a low around 33.
Wednesday
A 50 percent chance of rain. Cloudy, with a high near 42.
Wednesday Night
Rain likely before 1am, then a chance of rain and snow. Mostly cloudy, with a low around 32. Chance of precipitation is 60%.
Thursday
A chance of rain and snow. Mostly cloudy, with a high near 41. Chance of precipitation is 30%.
Thursday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 28.
Friday
A chance of rain and snow. Mostly cloudy, with a high near 37. Chance of precipitation is 50%.
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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:
4:39 am EST Feb 14, 2026
Forecast Valid:
8am EST Feb 14, 2026-6pm EST Feb 20, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation