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

66°F

19°C

Humidity 81%
Wind Speed SE 10 mph
Barometer 29.97 in (1014.8 mb)
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Last update 13 Oct 1:56 pm EDT
Extended Forecast for

Hauppauge NY

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 69. South wind around 9 mph.

    High: 69 °F

    Partly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 63. Southwest wind around 9 mph, with gusts as high as 20 mph.

    Low: 63 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 78. West wind 8 to 10 mph.

    High: 78 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 54. North wind 6 to 8 mph.

    Low: 54 °F

    Mostly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 64. North wind 6 to 9 mph.

    High: 64 °F

    Sunny

  • Thursday Night

    Thursday Night: Showers likely after 2am. Increasing clouds, with a low around 51. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 51 °F

    Partly Cloudy
    then Showers
    Likely

  • Friday

    Friday: Showers. High near 69. Chance of precipitation is 90%.

    High: 69 °F

    Showers

  • Friday Night

    Friday Night: Showers likely before 8pm. Partly cloudy, with a low around 44. Chance of precipitation is 60%.

    Low: 44 °F

    Showers
    Likely then
    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 53. Breezy.

    High: 53 °F

    Sunny and
    Breezy

Detailed Forecast

This Afternoon
Partly sunny, with a high near 69. South wind around 9 mph.
Tonight
Partly cloudy, with a low around 63. Southwest wind around 9 mph, with gusts as high as 20 mph.
Wednesday
Mostly sunny, with a high near 78. West wind 8 to 10 mph.
Wednesday Night
Mostly cloudy, with a low around 54. North wind 6 to 8 mph.
Thursday
Sunny, with a high near 64. North wind 6 to 9 mph.
Thursday Night
Showers likely after 2am. Increasing clouds, with a low around 51. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday
Showers. High near 69. Chance of precipitation is 90%.
Friday Night
Showers likely before 8pm. Partly cloudy, with a low around 44. Chance of precipitation is 60%.
Saturday
Sunny, with a high near 53. Breezy.
Saturday Night
Mostly clear, with a low around 38.
Sunday
Sunny, with a high near 55.
Sunday Night
Mostly clear, with a low around 42.
Monday
Mostly sunny, with a high near 61.
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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:
2:02 am EDT Oct 13, 2026
Forecast Valid:
2pm EDT Oct 13, 2026-6pm EDT Oct 19, 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