Port Jefferson, New York | 10-Day Weather Forecasts & Weekend Weather | WeatherBug
Main Menu
10 Day Forecast
  • Forecast day icon
    Saturday
    Mostly Sunny
    61°
    Forecast night icon
    Night
    Mostly Cloudy
    45°
    Saturday 5/11
    Day
    61°
    Mostly Sunny
    Forecast day icon
    Night
    45°
    Mostly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Mostly sunny. Highs in the lower 60s. East winds 5 to 10 mph.
    Night Details
    Mostly cloudy. A slight chance of showers after midnight. Lows in the mid 40s. Southeast winds 5 to 10 mph. Chance of rain 20 percent.
  • Forecast day icon
    Sunday
    40% Chance Rain Showers
    55°
    Forecast night icon
    Night
    Partly Cloudy
    47°
    Sunday 5/12
    Day
    55°
    40% Chance Rain Showers
    Forecast day icon
    Night
    47°
    Partly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Mostly cloudy with a 40 percent chance of showers. Highs in the mid 50s. Southeast winds 5 to 10 mph.
    Night Details
    Partly cloudy with a slight chance of showers in the evening then mostly clear after midnight. Lows in the mid 40s. Southwest winds around 5 mph. Chance of rain 20 percent.
  • Forecast day icon
    Monday
    Mostly Sunny
    64°
    Forecast night icon
    Night
    Mostly Cloudy
    52°
    Monday 5/13
    Day
    64°
    Mostly Sunny
    Forecast day icon
    Night
    52°
    Mostly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Mostly sunny. Highs in the lower 60s. Southwest winds 10 to 15 mph.
    Night Details
    Mostly cloudy. Lows in the lower 50s.
  • Forecast day icon
    Tuesday
    50% Chance Rain Showers
    71°
    Forecast night icon
    Night
    70% Chance Rain Showers
    58°
    Tuesday 5/14
    Day
    71°
    50% Chance Rain Showers
    Forecast day icon
    Night
    58°
    70% Chance Rain Showers
    Forecast night icon
    Hourly
    Day Details
    Mostly cloudy with a 50 percent chance of showers. Highs in the upper 60s.
    Night Details
    Showers likely. Lows in the mid 50s. Chance of rain 70 percent.
  • Forecast day icon
    Wednesday
    70% Chance Rain Showers
    67°
    Forecast night icon
    Night
    40% Chance Rain Showers
    55°
    Wednesday 5/15
    Day
    67°
    70% Chance Rain Showers
    Forecast day icon
    Night
    55°
    40% Chance Rain Showers
    Forecast night icon
    Hourly
    Day Details
    Showers likely. Highs in the upper 60s. Chance of rain 70 percent.
    Night Details
    Mostly cloudy with a chance of showers in the evening then partly cloudy after midnight. Lows in the mid 50s. Chance of rain 40 percent.
  • Forecast day icon
    Thursday
    Mostly Sunny
    70°
    Forecast night icon
    Night
    Partly Cloudy
    53°
    Thursday 5/16
    Day
    70°
    Mostly Sunny
    Forecast day icon
    Night
    53°
    Partly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Mostly sunny. Highs in the lower 70s.
    Night Details
    Mostly clear in the evening then becoming partly cloudy. Lows in the lower 50s.
  • Forecast day icon
    Friday
    Partly Sunny
    67°
    Forecast night icon
    Night
    40% Chance of Rain
    54°
    Friday 5/17
    Day
    67°
    Partly Sunny
    Forecast day icon
    Night
    54°
    40% Chance of Rain
    Forecast night icon
    Hourly
    Day Details
    Partly sunny. Highs in the upper 60s.
    Night Details
    Mostly cloudy with a chance of rain. Chance of precipitation 35%. Low temperature around 54F. Dew point will be around 53F with an average humidity of 87%. Winds will be 6 mph from the S.
  • Forecast day icon
    Saturday
    50% Chance of Rain
    70°
    Forecast night icon
    Night
    40% Chance of Rain
    57°
    Saturday 5/18
    Day
    70°
    50% Chance of Rain
    Forecast day icon
    Night
    57°
    40% Chance of Rain
    Forecast night icon
    Day Details
    Cloudy with a chance of rain. Chance of precipitation 45%. High temperature around 70F. Dew point will be around 59F with an average humidity of 81%. Winds will be 3 mph from the SW.
    Night Details
    Partly cloudy with a chance of rain. Chance of precipitation 35%. Low temperature around 57F. Dew point will be around 56F with an average humidity of 86%. Winds will be 4 mph from the W.
  • Forecast day icon
    Sunday
    30% Chance of Rain
    72°
    Forecast night icon
    Night
    30% Chance of Rain
    59°
    Sunday 5/19
    Day
    72°
    30% Chance of Rain
    Forecast day icon
    Night
    59°
    30% Chance of Rain
    Forecast night icon
    Day Details
    Sunny with a slight chance of rain. Chance of precipitation 25%. High temperature around 72F. Dew point will be around 56F with an average humidity of 70%. Winds will be 6 mph from the W.
    Night Details
    Clear with a slight chance of rain. Chance of precipitation 30%. Low temperature around 59F. Dew point will be around 55F with an average humidity of 79%. Winds will be 6 mph from the W.
  • Forecast day icon
    Monday
    40% Chance of Rain
    72°
    Forecast night icon
    Night
    30% Chance of Rain
    57°
    Monday 5/20
    Day
    72°
    40% Chance of Rain
    Forecast day icon
    Night
    57°
    30% Chance of Rain
    Forecast night icon
    Day Details
    Sunny with a chance of rain. Chance of precipitation 35%. High temperature around 72F. Dew point will be around 56F with an average humidity of 69%. Winds will be 6 mph from the W.
    Night Details
    Mostly clear with a slight chance of rain. Chance of precipitation 25%. Low temperature around 57F. Dew point will be around 54F with an average humidity of 77%. Winds will be 4 mph from the W.