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

39°F

4°C

Humidity 45%
Wind Speed W 16 G 25 mph
Barometer 29.56 in (1000.9 mb)
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Wind Chill30°F (-1°C)
Last update 17 Nov 3:56 am EST
Extended Forecast for

Hauppauge NY

  • Today

    Today: Mostly sunny, with a high near 43. Wind chill values between 25 and 35. Northwest wind 15 to 18 mph, with gusts as high as 33 mph.

    High: 43 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 33. West wind 10 to 14 mph, with gusts as high as 28 mph.

    Low: 33 °F

    Mostly Clear

  • Tuesday

    Tuesday: Increasing clouds, with a high near 46. West wind 9 to 11 mph, with gusts as high as 21 mph.

    High: 46 °F

    Increasing
    Clouds

  • Tuesday Night

    Tuesday Night: A 20 percent chance of rain after 1am. Mostly cloudy, with a low around 34. West wind around 5 mph becoming calm in the evening.

    Low: 34 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Wednesday

    Wednesday: Mostly sunny, with a high near 48. Calm wind becoming north around 6 mph in the morning.

    High: 48 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 37.

    Low: 37 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 49.

    High: 49 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: Cloudy, with a low around 41.

    Low: 41 °F

    Cloudy

  • Friday

    Friday: A 50 percent chance of rain. Cloudy, with a high near 56.

    High: 56 °F

    Chance Rain

Detailed Forecast

Today
Mostly sunny, with a high near 43. Wind chill values between 25 and 35. Northwest wind 15 to 18 mph, with gusts as high as 33 mph.
Tonight
Mostly clear, with a low around 33. West wind 10 to 14 mph, with gusts as high as 28 mph.
Tuesday
Increasing clouds, with a high near 46. West wind 9 to 11 mph, with gusts as high as 21 mph.
Tuesday Night
A 20 percent chance of rain after 1am. Mostly cloudy, with a low around 34. West wind around 5 mph becoming calm in the evening.
Wednesday
Mostly sunny, with a high near 48. Calm wind becoming north around 6 mph in the morning.
Wednesday Night
Mostly cloudy, with a low around 37.
Thursday
Mostly cloudy, with a high near 49.
Thursday Night
Cloudy, with a low around 41.
Friday
A 50 percent chance of rain. Cloudy, with a high near 56.
Friday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 44.
Saturday
A 30 percent chance of rain. Partly sunny, with a high near 53.
Saturday Night
Partly cloudy, with a low around 38.
Sunday
Mostly sunny, with a high near 53.
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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:
1:00 am EST Nov 17, 2025
Forecast Valid:
4am EST Nov 17, 2025-6pm EST Nov 23, 2025
 
Forecast Discussion
 
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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