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

N/A

Humidity NA
Wind Speed NW 5 mph
Barometer 30.14 in
Dewpoint N/A
Visibility 10.00 mi
Last update 10 Jan 3:56 am EST
Extended Forecast for

Hauppauge NY

  • Today

    Today: Rain, mainly after 1pm. High near 44. North wind 5 to 8 mph becoming east in the afternoon. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    High: 44 °F

    Chance Rain
    then Rain

  • Tonight

    Tonight: Rain. Steady temperature around 40. East wind 5 to 8 mph becoming light and variable. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 40 °F

    Rain then
    Rain Likely

  • Sunday

    Sunday: A 30 percent chance of rain before 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 44. West wind 6 to 14 mph.

    High: 44 °F

    Chance Rain

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 27. Wind chill values between 20 and 25. West wind around 15 mph, with gusts as high as 26 mph.

    Low: 27 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 40. West wind 10 to 14 mph.

    High: 40 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 31.

    Low: 31 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 44.

    High: 44 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 37.

    Low: 37 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 45.

    High: 45 °F

    Mostly Cloudy

Detailed Forecast

Today
Rain, mainly after 1pm. High near 44. North wind 5 to 8 mph becoming east in the afternoon. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Tonight
Rain. Steady temperature around 40. East wind 5 to 8 mph becoming light and variable. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Sunday
A 30 percent chance of rain before 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 44. West wind 6 to 14 mph.
Sunday Night
Partly cloudy, with a low around 27. Wind chill values between 20 and 25. West wind around 15 mph, with gusts as high as 26 mph.
Monday
Sunny, with a high near 40. West wind 10 to 14 mph.
Monday Night
Partly cloudy, with a low around 31.
Tuesday
Mostly sunny, with a high near 44.
Tuesday Night
Mostly cloudy, with a low around 37.
Wednesday
Mostly cloudy, with a high near 45.
Wednesday Night
A 30 percent chance of rain after 1am. Cloudy, with a low around 30.
Thursday
Mostly cloudy, with a high near 38.
Thursday Night
Partly cloudy, with a low around 21.
Friday
Mostly sunny, with a high near 33.
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:
2:50 am EST Jan 10, 2026
Forecast Valid:
4am EST Jan 10, 2026-6pm EST Jan 16, 2026
 
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