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.

Fair

36°F

2°C

Humidity 79%
Wind Speed N 3 mph
Barometer 30.27 in (1024.9 mb)
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Last update 25 Nov 12:56 am EST
Extended Forecast for

Hauppauge NY

  • Overnight

    Overnight: Mostly cloudy, with a low around 36. Calm wind.

    Low: 36 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A 50 percent chance of rain after 1pm. Cloudy, with a high near 57. Light southwest wind becoming south 5 to 10 mph in the morning.

    High: 57 °F

    Cloudy then
    Chance Rain

  • Tuesday Night

    Tuesday Night: Rain. Temperature rising to around 55 by 2am. South wind 6 to 9 mph, with gusts as high as 21 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 51 °F⇑

    Rain

  • Wednesday

    Wednesday: Showers likely, mainly before noon. Cloudy, with a high near 60. Southwest wind 6 to 10 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 60 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers before midnight. Partly cloudy, with a low around 36. West wind 7 to 11 mph, with gusts as high as 23 mph.

    Low: 36 °F

    Slight Chance
    Showers then
    Partly Cloudy

  • Thanksgiving Day

    Thanksgiving Day: Mostly sunny, with a high near 45.

    High: 45 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 31.

    Low: 31 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 43.

    High: 43 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 30.

    Low: 30 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly cloudy, with a low around 36. Calm wind.
Tuesday
A 50 percent chance of rain after 1pm. Cloudy, with a high near 57. Light southwest wind becoming south 5 to 10 mph in the morning.
Tuesday Night
Rain. Temperature rising to around 55 by 2am. South wind 6 to 9 mph, with gusts as high as 21 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday
Showers likely, mainly before noon. Cloudy, with a high near 60. Southwest wind 6 to 10 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
A 20 percent chance of showers before midnight. Partly cloudy, with a low around 36. West wind 7 to 11 mph, with gusts as high as 23 mph.
Thanksgiving Day
Mostly sunny, with a high near 45.
Thursday Night
Mostly clear, with a low around 31.
Friday
Mostly sunny, with a high near 43.
Friday Night
Mostly clear, with a low around 30.
Saturday
Sunny, with a high near 42.
Saturday Night
Mostly cloudy, with a low around 31.
Sunday
Partly sunny, with a high near 49.
Sunday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 38.
Monday
A 40 percent chance of rain. Mostly cloudy, with a high near 53.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Hauppauge NY
 40.82°N 73.2°W (Elev. 197 ft)
Last Update:
3:30 pm EST Nov 24, 2025
Forecast Valid:
1am EST Nov 25, 2025-6pm EST Dec 1, 2025
 
Forecast Discussion
 
Get as KML Get as XML

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