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Heavy Rain and Thunderstorms in the Deep South and portions of the east coast

A slow moving frontal boundary will continue to bring areas of heavy rain and thunderstorms in the Deep South and East coast early this week. A low pressure system over the Upper Midwest will keep conditions wet and cool early this week. High pressure over the west will move inland slightly allowing cooling along the coast, and intensifying the heat, especially in the interior Pacific NW. Read More >

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Overcast

57°F

14°C

Humidity 90%
Wind Speed E 8 mph
Barometer 29.88 in (1011.7 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 29 May 3:56 am EDT
Extended Forecast for

Stony Brook NY

  • Overnight

    Overnight: A 30 percent chance of rain.  Cloudy, with a low around 55. East wind 10 to 14 mph.

    Chance Rain

    Low: 55 °F

  • Memorial
    Day

    Memorial Day: Rain, mainly before 2pm, then a chance of showers after 2pm.  High near 59. East wind 10 to 15 mph, with gusts as high as 25 mph.  Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Rain

    High: 59 °F

  • Monday
    Night

    Monday Night: A slight chance of showers before 8pm, then patchy drizzle after 2am.  Patchy fog after 2am.  Otherwise, mostly cloudy, with a low around 52. East wind 6 to 8 mph.

    Mostly Cloudy
    then Patchy
    Drizzle and
    Patchy Fog

    Low: 52 °F

  • Tuesday

    Tuesday: Patchy drizzle and fog before 9am.  Mostly cloudy, with a high near 65. East wind 7 to 9 mph.

    Patchy
    Drizzle and
    Patchy Fog
    then Mostly
    Cloudy

    High: 65 °F

  • Tuesday
    Night

    Tuesday Night: A chance of showers and thunderstorms before 11pm, then showers likely and possibly a thunderstorm between 11pm and 4am, then a chance of showers and thunderstorms after 4am.  Mostly cloudy, with a low around 58. Southeast wind 5 to 9 mph becoming light  after midnight.  Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Showers
    Likely

    Low: 58 °F

  • Wednesday

    Wednesday: A 30 percent chance of showers before 7am.  Partly sunny, with a high near 74.

    Chance
    Showers then
    Partly Sunny

    High: 74 °F

  • Wednesday
    Night

    Wednesday Night: Partly cloudy, with a low around 58.

    Partly Cloudy

    Low: 58 °F

  • Thursday

    Thursday: Sunny, with a high near 74.

    Sunny

    High: 74 °F

  • Thursday
    Night

    Thursday Night: Mostly clear, with a low around 58.

    Mostly Clear

    Low: 58 °F

Detailed Forecast

Overnight
A 30 percent chance of rain. Cloudy, with a low around 55. East wind 10 to 14 mph.
Memorial Day
Rain, mainly before 2pm, then a chance of showers after 2pm. High near 59. East wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday Night
A slight chance of showers before 8pm, then patchy drizzle after 2am. Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 52. East wind 6 to 8 mph.
Tuesday
Patchy drizzle and fog before 9am. Mostly cloudy, with a high near 65. East wind 7 to 9 mph.
Tuesday Night
A chance of showers and thunderstorms before 11pm, then showers likely and possibly a thunderstorm between 11pm and 4am, then a chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 58. Southeast wind 5 to 9 mph becoming light after midnight. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday
A 30 percent chance of showers before 7am. Partly sunny, with a high near 74.
Wednesday Night
Partly cloudy, with a low around 58.
Thursday
Sunny, with a high near 74.
Thursday Night
Mostly clear, with a low around 58.
Friday
A 30 percent chance of showers after noon. Partly sunny, with a high near 73.
Friday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 60.
Saturday
Mostly sunny, with a high near 74.
Saturday Night
Mostly cloudy, with a low around 58.
Sunday
Partly sunny, with a high near 69.
Click Map For Forecast
Point Forecast:
Stony Brook NY
 40.92°N 73.12°W (Elev. 112 ft)
4:16 am EDT May 29, 2017
4am EDT May 29, 2017-6pm EDT Jun 4, 2017
 
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Additional Resources

Radar & Satellite Image

Northeast Radar Mosaic Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database