National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Mostly Cloudy

58°F

14°C

Humidity 75%
Wind Speed SW 16 G 23 mph
Barometer 30.02 in (1016.5 mb)
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Last update 19 Apr 8:56 am EDT
Extended Forecast for

Hauppauge NY

  • Today

    Today: Partly sunny, with a high near 79. Southwest wind 15 to 17 mph, with gusts as high as 31 mph.

    High: 79 °F

    Partly Sunny

  • Tonight

    Tonight: A 20 percent chance of showers before 2am. Mostly cloudy, with a low around 54. West wind 10 to 18 mph, with gusts as high as 32 mph.

    Low: 54 °F

    Slight Chance
    Showers

  • Sunday

    Sunday: Mostly sunny, with a high near 66. Northwest wind 14 to 18 mph, with gusts as high as 28 mph.

    High: 66 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Areas of frost after 4am. Otherwise, partly cloudy, with a low around 40. Northwest wind around 6 mph becoming calm after midnight.

    Low: 40 °F

    Partly Cloudy
    then Areas
    Frost

  • Monday

    Monday: Areas of frost before 7am. Otherwise, partly sunny, with a high near 57. East wind 5 to 11 mph becoming south in the afternoon.

    High: 57 °F

    Areas Frost
    then Mostly
    Cloudy

  • Monday Night

    Monday Night: A 50 percent chance of showers after 2am. Mostly cloudy, with a low around 48.

    Low: 48 °F

    Mostly Cloudy
    then Chance
    Showers

  • Tuesday

    Tuesday: A 30 percent chance of showers before 8am. Partly sunny, with a high near 69.

    High: 69 °F

    Chance
    Showers then
    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 49.

    Low: 49 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 66.

    High: 66 °F

    Mostly Sunny

Detailed Forecast

Today
Partly sunny, with a high near 79. Southwest wind 15 to 17 mph, with gusts as high as 31 mph.
Tonight
A 20 percent chance of showers before 2am. Mostly cloudy, with a low around 54. West wind 10 to 18 mph, with gusts as high as 32 mph.
Sunday
Mostly sunny, with a high near 66. Northwest wind 14 to 18 mph, with gusts as high as 28 mph.
Sunday Night
Areas of frost after 4am. Otherwise, partly cloudy, with a low around 40. Northwest wind around 6 mph becoming calm after midnight.
Monday
Areas of frost before 7am. Otherwise, partly sunny, with a high near 57. East wind 5 to 11 mph becoming south in the afternoon.
Monday Night
A 50 percent chance of showers after 2am. Mostly cloudy, with a low around 48.
Tuesday
A 30 percent chance of showers before 8am. Partly sunny, with a high near 69.
Tuesday Night
Mostly cloudy, with a low around 49.
Wednesday
Mostly sunny, with a high near 66.
Wednesday Night
Partly cloudy, with a low around 48.
Thursday
Mostly sunny, with a high near 66.
Thursday Night
Partly cloudy, with a low around 47.
Friday
Partly sunny, with a high near 63.
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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:
6:25 am EDT Apr 19, 2025
Forecast Valid:
9am EDT Apr 19, 2025-6pm EDT Apr 25, 2025
 
Forecast Discussion
 
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Additional Resources

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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