News

Colder temperatures return to the central and eastern U.S.

Rain showers behind a cold front will make for a wet Friday for most of the Mid-Atlantic and parts of the Northeast and Southeast. Strong thunderstorms with damaging winds are possible in the southern half of Florida. The front will usher in below-normal temperatures for the eastern half of the country by Saturday. Snow showers are possible in parts of the Great Lakes and Northeast on Friday.
Read More...

Current Conditions

En Español

Share |

Overcast

42°F

6°C

Humidity 73%
Wind Speed N 9 mph
Barometer 29.70 in (1005.6 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Wind Chill 37°F (3°C)
Last update on 27 Mar 12:56 pm EDT

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°N Lon: 73.1°W Elev: 98ft.

For More Weather Information:

New York, NY Local Forecast Office

Port Jefferson NY

7 Day Forecast

  • This
    Afternoon

    Slight Chance Showers Chance for Measurable Precipitation 20%

    Slight Chc
    Showers

    High: 42 °F

  • Tonight

    Chance Rain/Snow Chance for Measurable Precipitation 30%

    Chance
    Rain/Snow

    Low: 31 °F

  • Saturday

    Chance Rain/Snow Chance for Measurable Precipitation 40%

    Chance
    Rain/Snow

    High: 40 °F

  • Saturday
    Night

    Slight Chance Snow Chance for Measurable Precipitation 20%

    Slight Chc
    Snow

    Low: 23 °F

  • Sunday

    Sunny

    Sunny

    High: 39 °F

  • Sunday
    Night

    Slight Chance Showers Chance for Measurable Precipitation 20%

    Slight Chc
    Showers

    Low: 35 °F

  • Monday

    Mostly Cloudy

    Mostly
    Cloudy

    High: 47 °F

  • Monday
    Night

    Partly Cloudy

    Partly
    Cloudy

    Low: 35 °F

  • Tuesday

    Mostly Sunny

    Mostly
    Sunny

    High: 48 °F

Detailed Forecast

This Afternoon
A slight chance of showers. Cloudy, with a steady temperature around 42. Northwest wind around 9 mph. Chance of precipitation is 20%.
Tonight
A chance of rain showers before 1am, then a chance of rain and snow showers between 1am and 3am, then a chance of snow showers after 3am. Cloudy, with a low around 31. North wind 5 to 10 mph. Chance of precipitation is 30%.
Saturday
A chance of snow showers before noon, then a chance of rain and snow showers. Cloudy, with a high near 40. Wind chill values between 25 and 30. Northwest wind 10 to 14 mph. Chance of precipitation is 40%.
Saturday Night
A slight chance of snow showers before 10pm. Mostly cloudy, with a low around 23. Wind chill values between 15 and 20. Northwest wind around 14 mph. Chance of precipitation is 20%.
Sunday
Sunny, with a high near 39. North wind 8 to 10 mph becoming west in the afternoon.
Sunday Night
A slight chance of showers after 1am. Increasing clouds, with a low around 35. Chance of precipitation is 20%.
Monday
Mostly cloudy, with a high near 47.
Monday Night
Partly cloudy, with a low around 35.
Tuesday
Mostly sunny, with a high near 48.
Tuesday Night
A chance of rain. Partly cloudy, with a low around 36. Chance of precipitation is 30%.
Wednesday
Mostly sunny, with a high near 48.
Wednesday Night
Partly cloudy, with a low around 37.
Thursday
A chance of showers. Partly sunny, with a high near 52. Chance of precipitation is 40%.

ABOUT THIS FORECAST

Point Forecast: Port Jefferson NY
 40.95°N 73.05°W
Last Update: 11:48 am EDT Mar 27, 2015
Forecast Valid: 2pm EDT Mar 27, 2015-6pm EDT Apr 2, 2015
  Forecast Discussion
  Get as KML Get as XML

RADAR & SATELLITE IMAGES

Northeast Radar Mosaic Link to Satellite Data