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.

Fog/Mist

75°F

24°C

Humidity 94%
Wind Speed SW 13 G 21 mph
Barometer 29.83 in (1009.8 mb)
Dewpoint 73°F (23°C)
Visibility 1.00 mi
Last update 23 Jun 7:56 am EDT
Extended Forecast for

Stony Brook NY

Heat Advisory June 23, 08:45am until June 23, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory June 23, 08:45am until June 23, 08:00pm

    NOW until 8:00pm Sun

    Heat Advisory

  • Today

    High: 88 °F

    Partly Sunny
    then Chance
    T-storms

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly between 8pm and 2am. Mostly cloudy, with a low around 72. Southwest wind 14 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 72 °F

    T-storms
    Likely

  • Monday

    Monday: Mostly sunny, with a high near 85. West wind 11 to 14 mph.

    High: 85 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 66. Northwest wind 10 to 13 mph.

    Low: 66 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 87. Northwest wind 7 to 9 mph.

    High: 87 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 71.

    Low: 71 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A 30 percent chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 87.

    High: 87 °F

    Partly Sunny
    then Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 8pm. Mostly cloudy, with a low around 71. Chance of precipitation is 70%.

    Low: 71 °F

    Showers
    Likely

Detailed Forecast

Today
A 30 percent chance of showers and thunderstorms, mainly after 5pm. Partly sunny, with a high near 88. South wind 10 to 18 mph, with gusts as high as 28 mph.
Tonight
Showers and thunderstorms likely, mainly between 8pm and 2am. Mostly cloudy, with a low around 72. Southwest wind 14 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Monday
Mostly sunny, with a high near 85. West wind 11 to 14 mph.
Monday Night
Partly cloudy, with a low around 66. Northwest wind 10 to 13 mph.
Tuesday
Sunny, with a high near 87. Northwest wind 7 to 9 mph.
Tuesday Night
Partly cloudy, with a low around 71.
Wednesday
A 30 percent chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 87.
Wednesday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 8pm. Mostly cloudy, with a low around 71. Chance of precipitation is 70%.
Thursday
Mostly cloudy, with a high near 85.
Thursday Night
Partly cloudy, with a low around 66.
Friday
Sunny, with a high near 81.
Friday Night
Partly cloudy, with a low around 65.
Saturday
Partly sunny, with a high near 81.
Click Map For Forecast
Disclaimer
Map Legend

ABOUT THIS FORECAST

 
Point Forecast:
Stony Brook NY
 40.9°N 73.12°W (Elev. 148 ft)
Last Update:
6:19 am EDT Jun 23, 2024
Forecast Valid:
8am EDT Jun 23, 2024-6pm EDT Jun 29, 2024
 
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