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Severe Weather and Flooding From Portions of the Plains to the Mid-Atlantic

A potent spring storm system with abundant moisture will bring a chance of significant severe weather and heavy rain today into tonight. Damaging winds, large hail, and a couple of tornadoes will be possible across the Tennessee Valley, middle Ohio Valley, and portions of the Mid-Atlantic. Heavy rain and flooding are possible from the Ozarks to the Tennessee Valley. Read More >

Hazardous Weather Conditions

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Mostly Cloudy

63°F

17°C

Humidity 76%
Wind Speed N 8 mph
Barometer 29.87 in (1011.3 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 27 May 7:56 am EDT
Extended Forecast for

Sayville NY

  • Today

    Today: Partly sunny, with a high near 71. Light and variable wind becoming west 5 to 8 mph in the afternoon.

    Partly Sunny

    High: 71 °F

  • Tonight

    Tonight: Patchy drizzle after 2am.  Mostly cloudy, with a low around 55. South wind 5 to 7 mph becoming southeast after midnight.

    Mostly Cloudy
    then Patchy
    Drizzle

    Low: 55 °F

  • Sunday

    Sunday: Patchy drizzle before 10am.  Mostly cloudy, with a high near 64. Southeast wind 6 to 11 mph.

    Patchy
    Drizzle then
    Mostly Cloudy

    High: 64 °F

  • Sunday
    Night

    Sunday Night: A 20 percent chance of light rain after 3am.  Mostly cloudy, with a low around 54. Southeast wind 8 to 11 mph.

    Mostly Cloudy
    then Slight
    Chance Light
    Rain

    Low: 54 °F

  • Memorial
    Day

    Memorial Day: A chance of showers and thunderstorms before 8am, then showers likely and possibly a thunderstorm between 8am and 1pm, then a chance of showers and thunderstorms after 1pm.  Cloudy, with a high near 65. Southeast wind 11 to 16 mph.  Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Showers
    Likely

    High: 65 °F

  • Monday
    Night

    Monday Night: A 30 percent chance of showers before 7pm.  Mostly cloudy, with a low around 56.

    Chance
    Showers then
    Mostly Cloudy

    Low: 56 °F

  • Tuesday

    Tuesday: Partly sunny, with a high near 72.

    Partly Sunny

    High: 72 °F

  • Tuesday
    Night

    Tuesday Night: Mostly cloudy, with a low around 59.

    Mostly Cloudy

    Low: 59 °F

  • Wednesday

    Wednesday: Mostly sunny, with a high near 73.

    Mostly Sunny

    High: 73 °F

Detailed Forecast

Today
Partly sunny, with a high near 71. Light and variable wind becoming west 5 to 8 mph in the afternoon.
Tonight
Patchy drizzle after 2am. Mostly cloudy, with a low around 55. South wind 5 to 7 mph becoming southeast after midnight.
Sunday
Patchy drizzle before 10am. Mostly cloudy, with a high near 64. Southeast wind 6 to 11 mph.
Sunday Night
A 20 percent chance of light rain after 3am. Mostly cloudy, with a low around 54. Southeast wind 8 to 11 mph.
Memorial Day
A chance of showers and thunderstorms before 8am, then showers likely and possibly a thunderstorm between 8am and 1pm, then a chance of showers and thunderstorms after 1pm. Cloudy, with a high near 65. Southeast wind 11 to 16 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday Night
A 30 percent chance of showers before 7pm. Mostly cloudy, with a low around 56.
Tuesday
Partly sunny, with a high near 72.
Tuesday Night
Mostly cloudy, with a low around 59.
Wednesday
Mostly sunny, with a high near 73.
Wednesday Night
Partly cloudy, with a low around 59.
Thursday
Mostly sunny, with a high near 72.
Thursday Night
Partly cloudy, with a low around 57.
Friday
Mostly sunny, with a high near 70.
Click Map For Forecast
Point Forecast:
Sayville NY
 40.74°N 73.1°W (Elev. 30 ft)
6:36 am EDT May 27, 2017
8am EDT May 27, 2017-6pm EDT Jun 2, 2017
 
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Additional Resources

Radar & Satellite Image

Northeast Radar Mosaic Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database