Stormy Conditions Continue in the West; Wintry Weather to Intensify Through This Weekend In the Central and Eastern U.S.

An intense Pacific Storm will continue bringing heavy rain and flooding, strong and gusty winds, heavy snow in the mountains up to 6 feet. As the system shifts east, mountain snow will intensify in the Great Basin and Rockies. Another storm system will bring wintry conditions to the central U.S., spreading snow into the Mid-Atlantic, including the DC Metro area in time for the evening commute. 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

33°F

1°C

Humidity 48%
Wind Speed NW 12 mph
Barometer 30.20 in (1022.7 mb)
Dewpoint 15°F (-9°C)
Visibility 10.00 mi
Wind Chill24°F (-4°C)
Last update 16 Jan 11:56 pm EST
Extended Forecast for

Port Jefferson NY

  • Overnight

    Overnight: Mostly clear, with a low around 20. Wind chill values between 10 and 15. North wind 14 to 16 mph.

    Mostly Clear

    Low: 20 °F

  • Thursday

    Thursday: Partly sunny, with a high near 31. Wind chill values between 10 and 20. North wind 5 to 8 mph becoming southeast in the afternoon.

    Partly Sunny

    High: 31 °F

  • Thursday
    Night

    Thursday Night: Snow, mainly after 1am.  Temperature rising to around 33 by 3am. Wind chill values between 20 and 25. Southeast wind 3 to 5 mph.  Chance of precipitation is 80%. New snow accumulation of less than one inch possible.

    Chance Snow
    then Snow

    Low: 28 °F

  • Friday

    Friday: Snow before 8am, then rain between 8am and noon.  High near 41. South wind 5 to 7 mph becoming west in the afternoon.  Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

    Rain/Snow
    then Partly
    Sunny

    High: 41 °F

  • Friday
    Night

    Friday Night: Partly cloudy, with a low around 26. North wind 8 to 10 mph.

    Partly Cloudy

    Low: 26 °F

  • Saturday

    Saturday: Mostly sunny, with a high near 33.

    Mostly Sunny

    High: 33 °F

  • Saturday
    Night

    Saturday Night: Snow before 1am, then rain.  Low around 30. Chance of precipitation is 90%.

    Snow then
    Rain/Snow

    Low: 30 °F

  • Sunday

    Sunday: Rain.  High near 48. Chance of precipitation is 90%.

    Rain

    High: 48 °F

  • Sunday
    Night

    Sunday Night: A 50 percent chance of snow before 9pm.  Mostly cloudy, with a low around 11. Blustery.

    Blustery.
    Chance Snow
    then Mostly
    Cloudy

    Low: 11 °F

Detailed Forecast

Overnight
Mostly clear, with a low around 20. Wind chill values between 10 and 15. North wind 14 to 16 mph.
Thursday
Partly sunny, with a high near 31. Wind chill values between 10 and 20. North wind 5 to 8 mph becoming southeast in the afternoon.
Thursday Night
Snow, mainly after 1am. Temperature rising to around 33 by 3am. Wind chill values between 20 and 25. Southeast wind 3 to 5 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.
Friday
Snow before 8am, then rain between 8am and noon. High near 41. South wind 5 to 7 mph becoming west in the afternoon. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
Friday Night
Partly cloudy, with a low around 26. North wind 8 to 10 mph.
Saturday
Mostly sunny, with a high near 33.
Saturday Night
Snow before 1am, then rain. Low around 30. Chance of precipitation is 90%.
Sunday
Rain. High near 48. Chance of precipitation is 90%.
Sunday Night
A 50 percent chance of snow before 9pm. Mostly cloudy, with a low around 11. Blustery.
M.L.King Day
Mostly sunny and cold, with a high near 19. Blustery.
Monday Night
Mostly clear, with a low around 13. Blustery.
Tuesday
Mostly sunny, with a high near 31.
Tuesday Night
Mostly cloudy, with a low around 27.
Wednesday
A 30 percent chance of rain. Mostly cloudy, with a high near 43.
Click Map For Forecast
Point Forecast:
Port Jefferson NY
 40.93°N 73.06°W (Elev. 161 ft)
11:52 pm EST Jan 16, 2019
1am EST Jan 17, 2019-6pm EST Jan 23, 2019
 
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Additional Resources

Radar & Satellite Image

Northeast Radar Mosaic Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database