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.

Light Rain

36°F

2°C

Humidity 79%
Wind Speed E 8 mph
Barometer 30.46 in (1031.5 mb)
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Wind Chill30°F (-1°C)
Last update 3 Mar 12:56 pm EST
Extended Forecast for

Hauppauge NY

  • This Afternoon

    This Afternoon: Rain. High near 36. East wind 5 to 7 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.

    High: 36 °F

    Rain

  • Tonight

    Tonight: Rain, mainly before 4am. Low around 35. Calm wind becoming southwest around 6 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 35 °F

    Rain

  • Wednesday

    Wednesday: Mostly sunny, with a high near 46. Light and variable wind.

    High: 46 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A 20 percent chance of rain after 1am. Mostly cloudy, with a low around 32. Calm wind.

    Low: 32 °F

    Partly Cloudy
    then Slight
    Chance Rain

  • Thursday

    Thursday: Rain likely, mainly between 10am and 1pm. Cloudy, with a high near 43. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 43 °F

    Rain Likely

  • Thursday Night

    Thursday Night: Rain. Low around 36. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 36 °F

    Rain

  • Friday

    Friday: A 40 percent chance of rain before 1pm. Cloudy, with a high near 44.

    High: 44 °F

    Chance Rain

  • Friday Night

    Friday Night: Cloudy, with a low around 35.

    Low: 35 °F

    Cloudy

  • Saturday

    Saturday: Cloudy, with a high near 51.

    High: 51 °F

    Cloudy

Detailed Forecast

This Afternoon
Rain. High near 36. East wind 5 to 7 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.
Tonight
Rain, mainly before 4am. Low around 35. Calm wind becoming southwest around 6 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday
Mostly sunny, with a high near 46. Light and variable wind.
Wednesday Night
A 20 percent chance of rain after 1am. Mostly cloudy, with a low around 32. Calm wind.
Thursday
Rain likely, mainly between 10am and 1pm. Cloudy, with a high near 43. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday Night
Rain. Low around 36. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Friday
A 40 percent chance of rain before 1pm. Cloudy, with a high near 44.
Friday Night
Cloudy, with a low around 35.
Saturday
Cloudy, with a high near 51.
Saturday Night
Showers likely, mainly before 1am. Mostly cloudy, with a low around 43. Chance of precipitation is 60%.
Sunday
Partly sunny, with a high near 56.
Sunday Night
A 30 percent chance of showers. Partly cloudy, with a low around 42.
Monday
Mostly sunny, with a high near 56.
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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:
1:13 pm EST Mar 3, 2026
Forecast Valid:
1pm EST Mar 3, 2026-6pm EDT Mar 9, 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