Severe Storms in the North High Plains; Heavy Rain in the Gulf States

Severe thunderstorms with locally heavy rain that could cause flash flooding will be possible across the Upper Midwest. Storms with damaging wind may impact the Northeast. Regardless of tropical development, a low in the north-central Gulf may produce heavy rain and flash flooding. Elevated fire weather threats continue in the Central Great Basin and northern Alaska panhandle. 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

79°F

26°C

Humidity 79%
Wind Speed SW 7 mph
Barometer 29.93 in (1013.3 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 5 Jul 7:56 pm EDT
Extended Forecast for

Stony Brook NY

  • Tonight

    Tonight: Partly cloudy, with a low around 69. South wind 5 to 9 mph becoming calm  in the evening.

    Partly Cloudy

    Low: 69 °F

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms after 2pm. Some of the storms could produce gusty winds.  Mostly sunny, with a high near 92. Light and variable wind becoming southwest 5 to 7 mph in the morning.

    Mostly Sunny
    then Chance
    T-storms

    High: 92 °F

  • Monday
    Night

    Monday Night: A 50 percent chance of showers and thunderstorms. Some of the storms could produce gusty winds.  Mostly cloudy, with a low around 71. East wind 6 to 8 mph.

    Chance
    T-storms

    Low: 71 °F

  • Tuesday

    Tuesday: A 40 percent chance of showers and thunderstorms. Some of the storms could produce heavy rainfall.  Partly sunny, with a high near 83. Southeast wind 5 to 9 mph.

    Chance
    Showers then
    Heavy Rain

    High: 83 °F

  • Tuesday
    Night

    Tuesday Night: A 30 percent chance of showers and thunderstorms, mainly before 10pm.  Mostly cloudy, with a low around 72. South wind 6 to 8 mph.

    Chance
    T-storms

    Low: 72 °F

  • Wednesday

    Wednesday: Partly sunny, with a high near 89.

    Partly Sunny

    High: 89 °F

  • Wednesday
    Night

    Wednesday Night: Partly cloudy, with a low around 74.

    Partly Cloudy

    Low: 74 °F

  • Thursday

    Thursday: Mostly sunny, with a high near 90.

    Mostly Sunny

    High: 90 °F

  • Thursday
    Night

    Thursday Night: Mostly cloudy, with a low around 74.

    Mostly Cloudy

    Low: 74 °F

Detailed Forecast

Tonight
Partly cloudy, with a low around 69. South wind 5 to 9 mph becoming calm in the evening.
Monday
A 30 percent chance of showers and thunderstorms after 2pm. Some of the storms could produce gusty winds. Mostly sunny, with a high near 92. Light and variable wind becoming southwest 5 to 7 mph in the morning.
Monday Night
A 50 percent chance of showers and thunderstorms. Some of the storms could produce gusty winds. Mostly cloudy, with a low around 71. East wind 6 to 8 mph.
Tuesday
A 40 percent chance of showers and thunderstorms. Some of the storms could produce heavy rainfall. Partly sunny, with a high near 83. Southeast wind 5 to 9 mph.
Tuesday Night
A 30 percent chance of showers and thunderstorms, mainly before 10pm. Mostly cloudy, with a low around 72. South wind 6 to 8 mph.
Wednesday
Partly sunny, with a high near 89.
Wednesday Night
Partly cloudy, with a low around 74.
Thursday
Mostly sunny, with a high near 90.
Thursday Night
Mostly cloudy, with a low around 74.
Friday
Partly sunny, with a high near 88.
Friday Night
Mostly cloudy, with a low around 73.
Saturday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 89.
Saturday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 72.
Sunday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 89.
Click Map For Forecast
Point Forecast:
Stony Brook NY
 40.92°N 73.12°W (Elev. 112 ft)
7:21 pm EDT Jul 5, 2020
8pm EDT Jul 5, 2020-6pm EDT Jul 12, 2020
 
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Additional Resources

Radar & Satellite Image

Northeast Radar Mosaic Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database