Heavy Snow And Hazardous Travel Conditions Expected Over The Rockies, Locally Heavy Rainfall Over The South

Heavy snow and hazardous travel conditions will persist over portions of the central and southern Rockies into Friday before diminishing. A cold front will track eastward bringing the potential for locally heavy rainfall from the south central U.S. to the Appalachians into Saturday. Localized flooding will be possible. Read More >

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Overcast

48°F

9°C

Humidity 71%
Wind Speed S 8 mph
Barometer 30.03 in (1017.0 mb)
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Wind Chill44°F (7°C)
Last update 21 Nov 9:56 pm EST
Extended Forecast for

Port Jefferson NY

  • Tonight

    Tonight: Mostly cloudy, with a steady temperature around 45. South wind 6 to 10 mph.

    Mostly Cloudy

    Low: 45 °F

  • Friday

    Friday: A 50 percent chance of showers, mainly after noon.  Cloudy, then gradually becoming mostly sunny, with a high near 54. Breezy, with a west wind 13 to 23 mph, with gusts as high as 34 mph.

    Slight Chance
    Showers then
    Chance
    Showers and
    Breezy

    High: 54 °F

  • Friday
    Night

    Friday Night: Mostly clear, with a low around 34. Breezy, with a northwest wind 13 to 22 mph, with gusts as high as 37 mph.

    Mostly Clear
    and Breezy
    then Clear

    Low: 34 °F

  • Saturday

    Saturday: Sunny, with a high near 44. Wind chill values between 25 and 35. West wind 8 to 13 mph.

    Sunny

    High: 44 °F

  • Saturday
    Night

    Saturday Night: Rain likely, mainly after midnight.  Increasing clouds, with a temperature rising to around 46 by 5am. Southwest wind 6 to 10 mph becoming east after midnight.  Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.

    Rain Likely

    Low: 43 °F

  • Sunday

    Sunday: Rain likely, mainly before noon.  Mostly cloudy, with a steady temperature around 47. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Rain Likely

    High: 47 °F

  • Sunday
    Night

    Sunday Night: Mostly cloudy, with a low around 39.

    Mostly Cloudy

    Low: 39 °F

  • Monday

    Monday: Sunny, with a high near 49.

    Sunny

    High: 49 °F

  • Monday
    Night

    Monday Night: Partly cloudy, with a low around 41.

    Partly Cloudy

    Low: 41 °F

Detailed Forecast

Tonight
Mostly cloudy, with a steady temperature around 45. South wind 6 to 10 mph.
Friday
A 50 percent chance of showers, mainly after noon. Cloudy, then gradually becoming mostly sunny, with a high near 54. Breezy, with a west wind 13 to 23 mph, with gusts as high as 34 mph.
Friday Night
Mostly clear, with a low around 34. Breezy, with a northwest wind 13 to 22 mph, with gusts as high as 37 mph.
Saturday
Sunny, with a high near 44. Wind chill values between 25 and 35. West wind 8 to 13 mph.
Saturday Night
Rain likely, mainly after midnight. Increasing clouds, with a temperature rising to around 46 by 5am. Southwest wind 6 to 10 mph becoming east after midnight. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.
Sunday
Rain likely, mainly before noon. Mostly cloudy, with a steady temperature around 47. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday Night
Mostly cloudy, with a low around 39.
Monday
Sunny, with a high near 49.
Monday Night
Partly cloudy, with a low around 41.
Tuesday
Mostly sunny, with a high near 53.
Tuesday Night
Partly cloudy, with a low around 46.
Wednesday
A 30 percent chance of showers. Partly sunny, with a high near 55.
Wednesday Night
Partly cloudy, with a low around 42. Breezy.
Thanksgiving Day
Mostly sunny, with a high near 47. Breezy.
Click Map For Forecast
Point Forecast:
Port Jefferson NY
 40.96°N 73.08°W (Elev. 3 ft)
8:47 pm EST Nov 21, 2019
10pm EST Nov 21, 2019-6pm EST Nov 28, 2019
 
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Additional Resources

Radar & Satellite Image

Northeast Radar Mosaic Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database