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Harvey's remnant is forecast to regain tropical cyclone strength in the next day or two. Once Harvey starts impacting the Texas coast, up to 10 inches of rain will be possible over the next week. Another disturbance on the southern tip of Florida is not expected to strengthen, but it's slow movement could add up to 7 inches of rain over the next week. Heavy rain may produce flash flooding. Read More >

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Mostly Cloudy

77°F

25°C

Humidity 94%
Wind Speed S 17 G 26 mph
Barometer 29.79 in (1008.5 mb)
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 22 Aug 9:56 pm EDT
Extended Forecast for

Stony Brook NY

  • Tonight

    Tonight: A 50 percent chance of showers and thunderstorms. Some of the storms could produce gusty winds and heavy rain.  Mostly cloudy, with a low around 73. Southwest wind 14 to 17 mph.

    Heavy Rain

    Low: 73 °F

  • Wednesday

    Wednesday: A 30 percent chance of showers and thunderstorms, mainly before 8am.  Mostly cloudy, with a high near 85. West wind around 10 mph.

    Chance
    T-storms then
    Partly Sunny

    High: 85 °F

  • Wednesday
    Night

    Wednesday Night: Mostly clear, with a low around 64. Northwest wind 6 to 8 mph.

    Mostly Clear

    Low: 64 °F

  • Thursday

    Thursday: Sunny, with a high near 79. North wind 5 to 7 mph becoming light and variable  in the afternoon.

    Sunny

    High: 79 °F

  • Thursday
    Night

    Thursday Night: A 20 percent chance of showers after 2am.  Partly cloudy, with a low around 62. West wind 5 to 9 mph becoming north after midnight.

    Partly Cloudy
    then Slight
    Chance
    Showers

    Low: 62 °F

  • Friday

    Friday: A 30 percent chance of showers before 10am.  Mostly sunny, with a high near 77.

    Chance
    Showers then
    Sunny

    High: 77 °F

  • Friday
    Night

    Friday Night: Mostly clear, with a low around 59.

    Mostly Clear

    Low: 59 °F

  • Saturday

    Saturday: Sunny, with a high near 77.

    Sunny

    High: 77 °F

  • Saturday
    Night

    Saturday Night: Mostly clear, with a low around 60.

    Mostly Clear

    Low: 60 °F

Detailed Forecast

Tonight
A 50 percent chance of showers and thunderstorms. Some of the storms could produce gusty winds and heavy rain. Mostly cloudy, with a low around 73. Southwest wind 14 to 17 mph.
Wednesday
A 30 percent chance of showers and thunderstorms, mainly before 8am. Mostly cloudy, with a high near 85. West wind around 10 mph.
Wednesday Night
Mostly clear, with a low around 64. Northwest wind 6 to 8 mph.
Thursday
Sunny, with a high near 79. North wind 5 to 7 mph becoming light and variable in the afternoon.
Thursday Night
A 20 percent chance of showers after 2am. Partly cloudy, with a low around 62. West wind 5 to 9 mph becoming north after midnight.
Friday
A 30 percent chance of showers before 10am. Mostly sunny, with a high near 77.
Friday Night
Mostly clear, with a low around 59.
Saturday
Sunny, with a high near 77.
Saturday Night
Mostly clear, with a low around 60.
Sunday
Sunny, with a high near 77.
Sunday Night
Partly cloudy, with a low around 62.
Monday
Mostly sunny, with a high near 77.
Monday Night
Partly cloudy, with a low around 62.
Tuesday
Mostly sunny, with a high near 77.
Click Map For Forecast
Point Forecast:
Stony Brook NY
 40.92°N 73.12°W (Elev. 112 ft)
9:28 pm EDT Aug 22, 2017
10pm EDT Aug 22, 2017-6pm EDT Aug 29, 2017
 
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Additional Resources

Radar & Satellite Image

Northeast Radar Mosaic Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database