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.

Overcast

36°F

2°C

Humidity 76%
Wind Speed N 5 mph
Barometer 29.97 in (1014.9 mb)
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Wind Chill32°F (0°C)
Last update 5 Dec 11:56 pm EST
Extended Forecast for

Hauppauge NY

  • Overnight

    Overnight: A chance of freezing rain, mainly after 1am. Cloudy, with a steady temperature around 31. Calm wind. Chance of precipitation is 30%.

    Low: 31 °F

    Chance
    Freezing Rain

  • Saturday

    Saturday: A chance of drizzle or freezing rain before 8am, then a chance of drizzle between 8am and 1pm. Cloudy, with a high near 41. Calm wind becoming west 5 to 7 mph in the morning. Chance of precipitation is 30%.

    High: 41 °F

    Chance
    Drizzle/Freezing
    Rain then
    Chance
    Drizzle

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 27. Northwest wind around 6 mph.

    Low: 27 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 40. Light and variable wind becoming north around 6 mph in the morning.

    High: 40 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: A 20 percent chance of snow after 1am. Mostly cloudy, with a low around 25. Light and variable wind becoming northwest 5 to 8 mph in the evening.

    Low: 25 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Monday

    Monday: Mostly sunny, with a high near 32.

    High: 32 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 18.

    Low: 18 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 38.

    High: 38 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 31.

    Low: 31 °F

    Mostly Cloudy

Detailed Forecast

Overnight
A chance of freezing rain, mainly after 1am. Cloudy, with a steady temperature around 31. Calm wind. Chance of precipitation is 30%.
Saturday
A chance of drizzle or freezing rain before 8am, then a chance of drizzle between 8am and 1pm. Cloudy, with a high near 41. Calm wind becoming west 5 to 7 mph in the morning. Chance of precipitation is 30%.
Saturday Night
Partly cloudy, with a low around 27. Northwest wind around 6 mph.
Sunday
Partly sunny, with a high near 40. Light and variable wind becoming north around 6 mph in the morning.
Sunday Night
A 20 percent chance of snow after 1am. Mostly cloudy, with a low around 25. Light and variable wind becoming northwest 5 to 8 mph in the evening.
Monday
Mostly sunny, with a high near 32.
Monday Night
Partly cloudy, with a low around 18.
Tuesday
Mostly sunny, with a high near 38.
Tuesday Night
Mostly cloudy, with a low around 31.
Wednesday
A 30 percent chance of rain after 1pm. Mostly cloudy, with a high near 47.
Wednesday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 35.
Thursday
A 40 percent chance of rain. Partly sunny, with a high near 44.
Thursday Night
Mostly cloudy, with a low around 28.
Friday
Partly sunny, with a high near 40.
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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:
9:17 pm EST Dec 5, 2025
Forecast Valid:
12am EST Dec 6, 2025-6pm EST Dec 12, 2025
 
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