NWS Forecast for: Port Jefferson NY
Issued by: National Weather Service New York, NY
Last Update: 12:38 am EST Nov 21, 2019
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  • Overnight

    Overnight: Partly cloudy, with a low around 34. North wind around 13 mph.

    Partly Cloudy




    Low: 34 °F

  • Thursday

    Thursday: Sunny, with a high near 49. Wind chill values between 30 and 40 early. North wind 8 to 11 mph.

    Sunny




    High: 49 °F

  • Thursday
    Night

    Thursday Night: Mostly cloudy, with a steady temperature around 44. Southwest wind 6 to 11 mph.

    Mostly Cloudy




    Low: 44 °F

  • Friday

    Friday: A 20 percent chance of showers after 1pm.  Partly sunny, with a high near 57. Breezy, with a southwest wind 13 to 22 mph becoming northwest in the afternoon.

    Mostly Cloudy
    then Slight
    Chance
    Showers and
    Breezy

    High: 57 °F

  • Friday
    Night

    Friday Night: Mostly clear, with a low around 33. Breezy, with a northwest wind 13 to 21 mph.

    Partly Cloudy
    and Breezy
    then Mostly
    Clear

    Low: 33 °F

  • Saturday

    Saturday: Sunny, with a high near 45.

    Sunny




    High: 45 °F

  • Saturday
    Night

    Saturday Night: Rain likely, mainly after midnight.  Increasing clouds, with a low around 37. Chance of precipitation is 60%.

    Rain Likely




    Low: 37 °F

  • Sunday

    Sunday: A 50 percent chance of rain.  Mostly cloudy, with a high near 49.

    Chance Rain




    High: 49 °F

  • Sunday
    Night

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

    Mostly Cloudy




    Low: 36 °F

  • Overnight: Partly cloudy, with a low around 34. North wind around 13 mph.

    Thursday: Sunny, with a high near 49. Wind chill values between 30 and 40 early. North wind 8 to 11 mph.

    Thursday Night: Mostly cloudy, with a steady temperature around 44. Southwest wind 6 to 11 mph.

    Friday: A 20 percent chance of showers after 1pm. Partly sunny, with a high near 57. Breezy, with a southwest wind 13 to 22 mph becoming northwest in the afternoon.

    Friday Night: Mostly clear, with a low around 33. Breezy, with a northwest wind 13 to 21 mph.

    Saturday: Sunny, with a high near 45.

    Saturday Night: Rain likely, mainly after midnight. Increasing clouds, with a low around 37. Chance of precipitation is 60%.

    Sunday: A 50 percent chance of rain. Mostly cloudy, with a high near 49.

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

    Monday: Mostly sunny, with a high near 48.

    Monday Night: Mostly clear, with a low around 37.

    Tuesday: Sunny, with a high near 50.

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

    Wednesday: Mostly cloudy, with a high near 54.



    Port Jefferson NY
     40.93°N 73.06°W (Elev. 161 ft)

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