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

68°F

20°C

Humidity 22%
Wind Speed W 15 G 26 mph
Barometer 30.04 in (1017.3 mb)
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Last update 9 Mar 12:56 pm EDT
Extended Forecast for

Hauppauge NY

  • This Afternoon

    This Afternoon: Sunny, with a high near 67. Southwest wind 8 to 10 mph.

    High: 67 °F

    Sunny

  • Tonight

    Tonight: Patchy fog after 2am. Otherwise, increasing clouds, with a low around 39. South wind 3 to 7 mph.

    Low: 39 °F

    Partly Cloudy
    then Patchy
    Fog

  • Tuesday

    Tuesday: Patchy fog before 8am. Otherwise, partly sunny, with a high near 61. Calm wind becoming southwest 5 to 8 mph in the morning.

    High: 61 °F

    Patchy Fog
    then Mostly
    Sunny

  • Tuesday Night

    Tuesday Night: Patchy fog. Otherwise, mostly cloudy, with a low around 41. Light south wind.

    Low: 41 °F

    Patchy Fog

  • Wednesday

    Wednesday: A 20 percent chance of showers after 2pm. Mostly cloudy, with a high near 55. Light southeast wind becoming south 5 to 10 mph in the morning. Winds could gust as high as 20 mph.

    High: 55 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A 50 percent chance of rain. Mostly cloudy, with a low around 47.

    Low: 47 °F

    Chance Rain

  • Thursday

    Thursday: Rain likely before 2pm, then a chance of rain and snow. Mostly cloudy, with a high near 55. Chance of precipitation is 60%.

    High: 55 °F

    Rain Likely
    then
    Rain/Snow
    Likely

  • Thursday Night

    Thursday Night: A chance of rain and snow before 8pm. Partly cloudy, with a low around 29. Chance of precipitation is 30%.

    Low: 29 °F

    Chance
    Rain/Snow
    then Mostly
    Clear

  • Friday

    Friday: Partly sunny, with a high near 44.

    High: 44 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 67. Southwest wind 8 to 10 mph.
Tonight
Patchy fog after 2am. Otherwise, increasing clouds, with a low around 39. South wind 3 to 7 mph.
Tuesday
Patchy fog before 8am. Otherwise, partly sunny, with a high near 61. Calm wind becoming southwest 5 to 8 mph in the morning.
Tuesday Night
Patchy fog. Otherwise, mostly cloudy, with a low around 41. Light south wind.
Wednesday
A 20 percent chance of showers after 2pm. Mostly cloudy, with a high near 55. Light southeast wind becoming south 5 to 10 mph in the morning. Winds could gust as high as 20 mph.
Wednesday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 47.
Thursday
Rain likely before 2pm, then a chance of rain and snow. Mostly cloudy, with a high near 55. Chance of precipitation is 60%.
Thursday Night
A chance of rain and snow before 8pm. Partly cloudy, with a low around 29. Chance of precipitation is 30%.
Friday
Partly sunny, with a high near 44.
Friday Night
A chance of rain between 8pm and 2am. Mostly cloudy, with a low around 34. Chance of precipitation is 40%.
Saturday
Mostly sunny, with a high near 47.
Saturday Night
Mostly cloudy, with a low around 32.
Sunday
A 30 percent chance of rain. Cloudy, with a high near 48.
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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:
11:18 am EDT Mar 9, 2026
Forecast Valid:
1pm EDT Mar 9, 2026-6pm EDT Mar 15, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation