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.

Light Rain

47°F

8°C

Humidity 97%
Wind Speed S 5 mph
Barometer 29.78 in (1008.4 mb)
Dewpoint 46°F (8°C)
Visibility NA
Wind Chill45°F (7°C)
Last update 30 Apr 2:56 am EDT
Extended Forecast for

Hauppauge NY

  • Overnight

    Overnight: Showers. Low around 47. Light southeast wind. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 47 °F

    Showers

  • Thursday

    Thursday: Showers likely before 11am, then a slight chance of showers after 5pm. Cloudy, then gradually becoming mostly sunny, with a high near 61. Calm wind becoming north around 5 mph in the afternoon. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 61 °F

    Showers
    Likely then
    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 45. Northwest wind around 6 mph.

    Low: 45 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 63. West wind around 10 mph.

    High: 63 °F

    Sunny

  • Friday Night

    Friday Night: A 20 percent chance of showers after 2am. Mostly cloudy, with a low around 46. Southwest wind 3 to 7 mph.

    Low: 46 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Saturday

    Saturday: A 40 percent chance of rain after 2pm. Mostly cloudy, with a high near 58.

    High: 58 °F

    Mostly Cloudy
    then Chance
    Rain

  • Saturday Night

    Saturday Night: A 40 percent chance of rain. Mostly cloudy, with a low around 44.

    Low: 44 °F

    Chance Rain

  • Sunday

    Sunday: Mostly sunny, with a high near 59.

    High: 59 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 44.

    Low: 44 °F

    Mostly Clear

Detailed Forecast

Overnight
Showers. Low around 47. Light southeast wind. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday
Showers likely before 11am, then a slight chance of showers after 5pm. Cloudy, then gradually becoming mostly sunny, with a high near 61. Calm wind becoming north around 5 mph in the afternoon. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday Night
Partly cloudy, with a low around 45. Northwest wind around 6 mph.
Friday
Sunny, with a high near 63. West wind around 10 mph.
Friday Night
A 20 percent chance of showers after 2am. Mostly cloudy, with a low around 46. Southwest wind 3 to 7 mph.
Saturday
A 40 percent chance of rain after 2pm. Mostly cloudy, with a high near 58.
Saturday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 44.
Sunday
Mostly sunny, with a high near 59.
Sunday Night
Mostly clear, with a low around 44.
Monday
Mostly sunny, with a high near 62.
Monday Night
Partly cloudy, with a low around 51.
Tuesday
Mostly sunny, with a high near 66.
Tuesday Night
Mostly cloudy, with a low around 52.
Wednesday
A 40 percent chance of showers. Partly sunny, with a high near 67.
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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:
2:19 am EDT Apr 30, 2026
Forecast Valid:
3am EDT Apr 30, 2026-6pm EDT May 6, 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