Thunderstorms, Some Severe, and Heavy Rainfall Across the East

A cold front moving into the eastern U.S. will bring widespread thunderstorms and locally heavy rain to the eastern states. Excessive rain will be possible across the Mid-South and widespread flash flooding will be possible. Severe thunderstorms with damaging winds may occur in the Mid-Atlantic and Northeast. Out west, windy, dry conditions are keeping fire weather threats elevated-to-critical. Read More >

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Overcast

72°F

22°C

Humidity 100%
Wind Speed S 12 mph
Barometer 30.16 in (1021.2 mb)
Dewpoint 72°F (22°C)
Visibility 7.00 mi
Last update 25 Sep 9:56 pm EDT
Extended Forecast for

West Sayville NY

  • Tonight

    Tonight: A 40 percent chance of showers.  Patchy fog after 1am.  Otherwise, cloudy, with a low around 69. South wind around 11 mph.

    Chance
    Showers and
    Patchy Fog

    Low: 69 °F

  • Wednesday

    Wednesday: A 50 percent chance of showers and thunderstorms.  Mostly cloudy, with a high near 78. South wind 10 to 14 mph.

    Chance
    T-storms

    High: 78 °F

  • Wednesday
    Night

    Wednesday Night: Showers and thunderstorms likely before 3am, then a slight chance of showers. Some of the storms could produce gusty winds.  Mostly cloudy, with a low around 61. Southwest wind around 10 mph becoming north after midnight.  Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    T-storms
    Likely

    Low: 61 °F

  • Thursday

    Thursday: Partly sunny, with a high near 70. North wind 9 to 13 mph.

    Partly Sunny

    High: 70 °F

  • Thursday
    Night

    Thursday Night: A 20 percent chance of showers.  Mostly cloudy, with a low around 58. East wind around 8 mph.

    Slight Chance
    Showers

    Low: 58 °F

  • Friday

    Friday: A 30 percent chance of showers before noon.  Mostly cloudy, with a high near 70.

    Chance
    Showers then
    Partly Sunny

    High: 70 °F

  • Friday
    Night

    Friday Night: Partly cloudy, with a low around 60.

    Partly Cloudy

    Low: 60 °F

  • Saturday

    Saturday: Sunny, with a high near 72.

    Sunny

    High: 72 °F

  • Saturday
    Night

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

    Mostly Clear

    Low: 58 °F

Detailed Forecast

Tonight
A 40 percent chance of showers. Patchy fog after 1am. Otherwise, cloudy, with a low around 69. South wind around 11 mph.
Wednesday
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 78. South wind 10 to 14 mph.
Wednesday Night
Showers and thunderstorms likely before 3am, then a slight chance of showers. Some of the storms could produce gusty winds. Mostly cloudy, with a low around 61. Southwest wind around 10 mph becoming north after midnight. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday
Partly sunny, with a high near 70. North wind 9 to 13 mph.
Thursday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 58. East wind around 8 mph.
Friday
A 30 percent chance of showers before noon. Mostly cloudy, with a high near 70.
Friday Night
Partly cloudy, with a low around 60.
Saturday
Sunny, with a high near 72.
Saturday Night
Mostly clear, with a low around 58.
Sunday
Mostly sunny, with a high near 69.
Sunday Night
Partly cloudy, with a low around 57.
Monday
Mostly sunny, with a high near 68.
Monday Night
Mostly cloudy, with a low around 59.
Tuesday
A 30 percent chance of showers. Partly sunny, with a high near 73.
Click Map For Forecast
Point Forecast:
West Sayville NY
 40.74°N 73.1°W (Elev. 30 ft)
10:27 pm EDT Sep 25, 2018
11pm EDT Sep 25, 2018-6pm EDT Oct 2, 2018
 
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Additional Resources

Radar & Satellite Image

Northeast Radar Mosaic Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database