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Sprawling Storm System Bringing Impactful Weather To Western and Central U.S. Through Midweek

A large storm system will extend from the West Coast to the Great Lakes during the next couple days bringing hazardous weather to many parts of the country. Heavy snow is expected in the higher terrain of the West, along with very strong winds. Snow and ice will disrupt travel in parts of the Midwest, and heavy rain could cause widespread flooding in the Mississippi Valley and Great Lakes. 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

49°F

9°C

Humidity 71%
Wind Speed S 13 mph
Barometer 30.44 in (1030.7 mb)
Dewpoint 40°F (4°C)
Visibility 10.00 mi
Wind Chill44°F (7°C)
Last update 19 Feb 12:56 pm EST
Extended Forecast for

Stony Brook NY

  • Washington's
    Birthday

    Washington's Birthday: Mostly cloudy, with a high near 50. South wind around 10 mph.

    Mostly Cloudy

    High: 50 °F

  • Tonight

    Tonight: Rain likely before 11pm, then a chance of drizzle or light rain, mainly between 11pm and 2am.  Areas of fog after 2am.  Otherwise, cloudy, with a steady temperature around 47. Southwest wind 7 to 9 mph.  Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Rain Likely
    and Areas Fog

    Low: 47 °F

  • Tuesday

    Tuesday: A slight chance of drizzle or light rain before 10am.  Areas of fog before 10am.  Otherwise, mostly cloudy, with a high near 59. Southwest wind 6 to 10 mph.  Chance of precipitation is 20%.

    Slight Chance
    Light Rain
    and Areas Fog
    then Partly
    Sunny

    High: 59 °F

  • Tuesday
    Night

    Tuesday Night: Areas of fog.  Otherwise, mostly cloudy, with a low around 49. Southwest wind around 8 mph.

    Areas Fog

    Low: 49 °F

  • Wednesday

    Wednesday: Areas of fog before 1pm.  Otherwise, mostly cloudy, with a high near 60. Southwest wind 8 to 11 mph.

    Areas Fog

    High: 60 °F

  • Wednesday
    Night

    Wednesday Night: A 30 percent chance of showers.  Areas of fog before 1am.  Otherwise, mostly cloudy, with a low around 46.

    Chance
    Showers and
    Areas Fog

    Low: 46 °F

  • Thursday

    Thursday: A 40 percent chance of showers.  Mostly cloudy, with a high near 50.

    Chance
    Showers

    High: 50 °F

  • Thursday
    Night

    Thursday Night: Mostly cloudy, with a low around 36.

    Mostly Cloudy

    Low: 36 °F

  • Friday

    Friday: A 30 percent chance of rain after 1pm.  Partly sunny, with a high near 45.

    Partly Sunny
    then Chance
    Rain

    High: 45 °F

Detailed Forecast

Washington's Birthday
Mostly cloudy, with a high near 50. South wind around 10 mph.
Tonight
Rain likely before 11pm, then a chance of drizzle or light rain, mainly between 11pm and 2am. Areas of fog after 2am. Otherwise, cloudy, with a steady temperature around 47. Southwest wind 7 to 9 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday
A slight chance of drizzle or light rain before 10am. Areas of fog before 10am. Otherwise, mostly cloudy, with a high near 59. Southwest wind 6 to 10 mph. Chance of precipitation is 20%.
Tuesday Night
Areas of fog. Otherwise, mostly cloudy, with a low around 49. Southwest wind around 8 mph.
Wednesday
Areas of fog before 1pm. Otherwise, mostly cloudy, with a high near 60. Southwest wind 8 to 11 mph.
Wednesday Night
A 30 percent chance of showers. Areas of fog before 1am. Otherwise, mostly cloudy, with a low around 46.
Thursday
A 40 percent chance of showers. Mostly cloudy, with a high near 50.
Thursday Night
Mostly cloudy, with a low around 36.
Friday
A 30 percent chance of rain after 1pm. Partly sunny, with a high near 45.
Friday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 37.
Saturday
A 40 percent chance of rain. Mostly cloudy, with a high near 51.
Saturday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 41.
Sunday
A 40 percent chance of rain. Mostly cloudy, with a high near 52.
Click Map For Forecast
Point Forecast:
Stony Brook NY
 40.92°N 73.12°W (Elev. 112 ft)
10:14 am EST Feb 19, 2018
1pm EST Feb 19, 2018-6pm EST Feb 25, 2018
 
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Additional Resources

Radar & Satellite Image

Northeast Radar Mosaic Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database