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.

Partly Cloudy

9°C

48°F

Humidity 71%
Wind Speed SW 17 km/h
Barometer 1015.1 mb (29.98 in)
Dewpoint 4°C (39°F)
Visibility 16 km
Wind Chill7°C (44°F)
Last update 22 Nov 12:56 am EST
Extended Forecast for

Port Jefferson NY

  • Overnight

    Overnight: Mostly cloudy, with a steady temperature around -13. Southwest wind around 13 km/h.

    Mostly Cloudy

    Low: 9 °C

  • Friday

    Friday: A 50 percent chance of showers, mainly after noon.  Cloudy, then gradually becoming mostly sunny, with a high near 12. Breezy, with a southwest wind 18 to 23 km/h increasing to 29 to 34 km/h in the afternoon. Winds could gust as high as 50 km/h.

    Slight Chance
    Showers then
    Chance
    Showers and
    Breezy

    High: 12 °C

  • Friday
    Night

    Friday Night: Mostly clear, with a low around 0. Breezy, with a northwest wind 27 to 32 km/h decreasing to 18 to 23 km/h after midnight. Winds could gust as high as 55 km/h.

    Mostly Clear
    and Breezy
    then Clear

    Low: 0 °C

  • Saturday

    Saturday: Sunny, with a high near 7. Wind chill values between -5 and zero. Southwest wind 11 to 18 km/h.

    Sunny

    High: 7 °C

  • Saturday
    Night

    Saturday Night: Rain likely, mainly after midnight.  Increasing clouds, with a steady temperature around -14. Southwest wind 5 to 13 km/h becoming east after midnight.  Chance of precipitation is 70%. New precipitation amounts between 1 and 2 cm possible.

    Rain Likely

    Low: 6 °C

  • Sunday

    Sunday: Rain likely, mainly before noon.  Mostly cloudy, with a high near 10. Chance of precipitation is 60%. New precipitation amounts between 5 and 7.5 mm possible.

    Rain Likely

    High: 10 °C

  • Sunday
    Night

    Sunday Night: Partly cloudy, with a low around 1.

    Partly Cloudy

    Low: 1 °C

  • Monday

    Monday: Sunny, with a high near 9.

    Sunny

    High: 9 °C

  • Monday
    Night

    Monday Night: Partly cloudy, with a low around 3.

    Partly Cloudy

    Low: 3 °C

Detailed Forecast

Overnight
Mostly cloudy, with a steady temperature around -13. Southwest wind around 13 km/h.
Friday
A 50 percent chance of showers, mainly after noon. Cloudy, then gradually becoming mostly sunny, with a high near 12. Breezy, with a southwest wind 18 to 23 km/h increasing to 29 to 34 km/h in the afternoon. Winds could gust as high as 50 km/h.
Friday Night
Mostly clear, with a low around 0. Breezy, with a northwest wind 27 to 32 km/h decreasing to 18 to 23 km/h after midnight. Winds could gust as high as 55 km/h.
Saturday
Sunny, with a high near 7. Wind chill values between -5 and zero. Southwest wind 11 to 18 km/h.
Saturday Night
Rain likely, mainly after midnight. Increasing clouds, with a steady temperature around -14. Southwest wind 5 to 13 km/h becoming east after midnight. Chance of precipitation is 70%. New precipitation amounts between 1 and 2 cm possible.
Sunday
Rain likely, mainly before noon. Mostly cloudy, with a high near 10. Chance of precipitation is 60%. New precipitation amounts between 5 and 7.5 mm possible.
Sunday Night
Partly cloudy, with a low around 1.
Monday
Sunny, with a high near 9.
Monday Night
Partly cloudy, with a low around 3.
Tuesday
Mostly sunny, with a high near 12.
Tuesday Night
Partly cloudy, with a low around 5.
Wednesday
A 30 percent chance of showers. Partly sunny, with a high near 13.
Wednesday Night
Partly cloudy, with a low around 3.
Thanksgiving Day
Mostly sunny, with a high near 8.
Click Map For Forecast
Point Forecast:
Port Jefferson NY
 40.93°N 73.06°W (Elev. 49 m)
12:24 am EST Nov 22, 2019
1am EST Nov 22, 2019-6pm EST Nov 28, 2019
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Northeast Radar Mosaic Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database