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

64°F

18°C

Humidity 54%
Wind Speed S 9 mph
Barometer 29.99 in (1015.4 mb)
Dewpoint 47°F (8°C)
Visibility 10.00 mi
Last update 10 Mar 1:56 pm EDT
Extended Forecast for

Hauppauge NY

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 72. South wind around 11 mph.

    High: 72 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 40. Light south wind.

    Low: 40 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A 30 percent chance of showers, mainly after 2pm. Mostly cloudy, with a high near 56. Light south wind increasing to 5 to 10 mph in the morning.

    High: 56 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of rain before 11pm, then a chance of rain and thunderstorms between 11pm and 2am, then a chance of rain after 2am. Mostly cloudy, with a low around 49. South wind around 10 mph, with gusts as high as 23 mph. Chance of precipitation is 40%.

    Low: 49 °F

    Chance Rain

  • Thursday

    Thursday: Rain likely before 5pm, then a chance of rain and snow. Cloudy, with a temperature falling to around 42 by 5pm. Northwest wind 10 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.

    High: 55 °F⇓

    Rain Likely
    then
    Rain/Snow
    Likely

  • Thursday Night

    Thursday Night: A chance of rain and snow before 8pm. Mostly cloudy, then gradually becoming clear, with a low around 30. Chance of precipitation is 30%.

    Low: 30 °F

    Chance
    Rain/Snow
    then Mostly
    Clear

  • Friday

    Friday: Partly sunny, with a high near 45.

    High: 45 °F

    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 35.

    Low: 35 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 49.

    High: 49 °F

    Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 72. South wind around 11 mph.
Tonight
Partly cloudy, with a low around 40. Light south wind.
Wednesday
A 30 percent chance of showers, mainly after 2pm. Mostly cloudy, with a high near 56. Light south wind increasing to 5 to 10 mph in the morning.
Wednesday Night
A chance of rain before 11pm, then a chance of rain and thunderstorms between 11pm and 2am, then a chance of rain after 2am. Mostly cloudy, with a low around 49. South wind around 10 mph, with gusts as high as 23 mph. Chance of precipitation is 40%.
Thursday
Rain likely before 5pm, then a chance of rain and snow. Cloudy, with a temperature falling to around 42 by 5pm. Northwest wind 10 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.
Thursday Night
A chance of rain and snow before 8pm. Mostly cloudy, then gradually becoming clear, with a low around 30. Chance of precipitation is 30%.
Friday
Partly sunny, with a high near 45.
Friday Night
Partly cloudy, with a low around 35.
Saturday
Sunny, with a high near 49.
Saturday Night
Partly cloudy, with a low around 33.
Sunday
Mostly cloudy, with a high near 50.
Sunday Night
Rain. Low around 43. Chance of precipitation is 80%.
Monday
Rain. High near 53. Chance of precipitation is 80%.
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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:
1:57 pm EDT Mar 10, 2026
Forecast Valid:
2pm EDT Mar 10, 2026-6pm EDT Mar 16, 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