Port Jefferson, New York | 10-Day Weather Forecasts & Weekend Weather | WeatherBug
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10 Day Forecast
  • Forecast day icon
    Tuesday
    Sunny
    47°
    Forecast night icon
    Night
    Mostly Cloudy
    40°
    Tuesday 3/19
    Day
    47°
    Sunny
    Forecast day icon
    Night
    40°
    Mostly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Sunny. Highs in the mid 40s. West winds 15 to 20 mph with gusts up to 30 mph.
    Night Details
    Mostly cloudy. Lows in the upper 30s. Southwest winds 10 to 15 mph. Gusts up to 25 mph in the evening.
  • Forecast day icon
    Wednesday
    Partly Sunny
    53°
    Forecast night icon
    Night
    Partly Cloudy
    31°
    Wednesday 3/20
    Day
    53°
    Partly Sunny
    Forecast day icon
    Night
    31°
    Partly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Partly sunny. A slight chance of showers in the afternoon. Highs in the lower 50s. Southwest winds 15 to 20 mph. Chance of rain 20 percent.
    Night Details
    Partly cloudy with a slight chance of rain showers in the evening then mostly clear after midnight. Breezy with lows around 30. West winds 15 to 25 mph. Chance of rain 20 percent.
  • Forecast day icon
    Thursday
    Sunny
    41°
    Forecast night icon
    Night
    Mostly Clear
    28°
    Thursday 3/21
    Day
    41°
    Sunny
    Forecast day icon
    Night
    28°
    Mostly Clear
    Forecast night icon
    Hourly
    Day Details
    Sunny breezy with highs in the lower 40s. West winds 15 to 25 mph.
    Night Details
    Mostly clear and breezy. Lows in the mid 20s.
  • Forecast day icon
    Friday
    Mostly Sunny
    43°
    Forecast night icon
    Night
    50% Chance of Rain
    38°
    Friday 3/22
    Day
    43°
    Mostly Sunny
    Forecast day icon
    Night
    38°
    50% Chance of Rain
    Forecast night icon
    Hourly
    Day Details
    Mostly sunny. Highs in the lower 40s.
    Night Details
    Mostly cloudy. A chance of rain after midnight. Lows in the upper 30s. Chance of rain 50 percent.
  • Forecast day icon
    Saturday
    60% Chance of Rain
    55°
    Forecast night icon
    Night
    50% Chance of Rain
    35°
    Saturday 3/23
    Day
    55°
    60% Chance of Rain
    Forecast day icon
    Night
    35°
    50% Chance of Rain
    Forecast night icon
    Hourly
    Day Details
    Rain likely. Highs in the lower 50s. Chance of rain 60 percent.
    Night Details
    Mostly cloudy with a 50 percent chance of rain. Lows around 30.
  • Forecast day icon
    Sunday
    Mostly Sunny
    43°
    Forecast night icon
    Night
    Partly Cloudy
    32°
    Sunday 3/24
    Day
    43°
    Mostly Sunny
    Forecast day icon
    Night
    32°
    Partly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Mostly sunny. Highs in the mid 40s.
    Night Details
    Partly cloudy. Lows in the lower 30s.
  • Forecast day icon
    Monday
    Mostly Sunny
    44°
    Forecast night icon
    Night
    Mostly Clear
    34°
    Monday 3/25
    Day
    44°
    Mostly Sunny
    Forecast day icon
    Night
    34°
    Mostly Clear
    Forecast night icon
    Hourly
    Day Details
    Mostly sunny. Highs in the mid 40s.
    Night Details
    Mostly clear. Low temperature around 34F. Dew point will be around 27F with an average humidity of 67%. Winds will be 13 mph from the E.
  • Forecast day icon
    Tuesday
    Cloudy
    49°
    Forecast night icon
    Night
    30% Chance of Rain
    44°
    Tuesday 3/26
    Day
    49°
    Cloudy
    Forecast day icon
    Night
    44°
    30% Chance of Rain
    Forecast night icon
    Day Details
    Cloudy. High temperature around 49F. Dew point will be around 38F with an average humidity of 76%. Winds will be 15 mph from the E.
    Night Details
    Cloudy with a slight chance of rain. Chance of precipitation 30%. Low temperature around 44F. Dew point will be around 42F with an average humidity of 91%. Winds will be 13 mph from the E.
  • Forecast day icon
    Wednesday
    40% Chance of Rain
    56°
    Forecast night icon
    Night
    50% Chance of Rain
    49°
    Wednesday 3/27
    Day
    56°
    40% Chance of Rain
    Forecast day icon
    Night
    49°
    50% Chance of Rain
    Forecast night icon
    Day Details
    Cloudy with a chance of rain. Chance of precipitation 40%. High temperature around 56F. Dew point will be around 49F with an average humidity of 88%. Winds will be 8 mph from the SE.
    Night Details
    Cloudy with a chance of rain. Chance of precipitation 50%. Low temperature around 49F. Dew point will be around 49F with an average humidity of 96%. Winds will be 7 mph from the SE.
  • Forecast day icon
    Thursday
    50% Chance of Rain
    58°
    Forecast night icon
    Night
    40% Chance of Rain
    46°
    Thursday 3/28
    Day
    58°
    50% Chance of Rain
    Forecast day icon
    Night
    46°
    40% Chance of Rain
    Forecast night icon
    Day Details
    Cloudy with a chance of rain. Chance of precipitation 45%. High temperature around 58F. Dew point will be around 49F with an average humidity of 81%. Winds will be 1 mph from the SE.
    Night Details
    Cloudy with a chance of rain. Chance of precipitation 40%. Low temperature around 46F. Dew point will be around 44F with an average humidity of 83%. Winds will be 1 mph from the NE.