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 Fog/Mist

58°F

14°C

Humidity 97%
Wind Speed NE 20 G 33 mph
Barometer 29.56 in (1000.9 mb)
Dewpoint 57°F (14°C)
Visibility 3.00 mi
Last update 16 May 4:56 am EDT
Extended Forecast for

Stony Brook NY

  • Overnight

    Overnight: Showers likely. Cloudy, with a low around 55. Northeast wind around 17 mph, with gusts as high as 28 mph. Chance of precipitation is 60%.

    Low: 55 °F

    Showers
    Likely

  • Thursday

    Thursday: Showers likely, mainly before 8am. Cloudy, with a high near 62. Northeast wind around 17 mph, with gusts as high as 28 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 62 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: A 20 percent chance of showers before 2am. Mostly cloudy, with a low around 54. Northeast wind 10 to 13 mph.

    Low: 54 °F

    Slight Chance
    Showers

  • Friday

    Friday: Partly sunny, with a high near 71. East wind around 9 mph.

    High: 71 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 53. East wind around 6 mph.

    Low: 53 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 66.

    High: 66 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 51.

    Low: 51 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 66.

    High: 66 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 51.

    Low: 51 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Showers likely. Cloudy, with a low around 55. Northeast wind around 17 mph, with gusts as high as 28 mph. Chance of precipitation is 60%.
Thursday
Showers likely, mainly before 8am. Cloudy, with a high near 62. Northeast wind around 17 mph, with gusts as high as 28 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday Night
A 20 percent chance of showers before 2am. Mostly cloudy, with a low around 54. Northeast wind 10 to 13 mph.
Friday
Partly sunny, with a high near 71. East wind around 9 mph.
Friday Night
Mostly cloudy, with a low around 53. East wind around 6 mph.
Saturday
Mostly cloudy, with a high near 66.
Saturday Night
Mostly cloudy, with a low around 51.
Sunday
Partly sunny, with a high near 66.
Sunday Night
Mostly cloudy, with a low around 51.
Monday
Partly sunny, with a high near 66.
Monday Night
Partly cloudy, with a low around 50.
Tuesday
Mostly sunny, with a high near 69.
Tuesday Night
Partly cloudy, with a low around 53.
Wednesday
A 30 percent chance of showers. Partly sunny, with a high near 72.
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ABOUT THIS FORECAST

 
Point Forecast:
Stony Brook NY
 40.9°N 73.12°W (Elev. 148 ft)
Last Update:
3:23 am EDT May 16, 2024
Forecast Valid:
5am EDT May 16, 2024-6pm EDT May 22, 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