Port Jefferson, New York | 10-Day Weather Forecasts & Weekend Weather | WeatherBug
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10 Day Forecast
  • Forecast night icon
    Night
    Clear
    40°
    Thursday 4/25
    Forecast night icon
    40°
    Clear
    Hourly
    Night Details
    Clear. Patchy frost. Lows in the upper 30s. South winds around 5 mph.
  • Forecast day icon
    Friday
    Sunny
    59°
    Forecast night icon
    Night
    Mostly Clear
    44°
    Friday 4/26
    Day
    59°
    Sunny
    Forecast day icon
    Night
    44°
    Mostly Clear
    Forecast night icon
    Hourly
    Day Details
    Patchy frost in the morning. Sunny. Highs in the upper 50s. Northeast winds 5 to 10 mph becoming southeast with gusts up to 20 mph in the afternoon.
    Night Details
    Mostly clear. Lows around 40. South winds 5 to 10 mph. Gusts up to 20 mph in the evening.
  • Forecast day icon
    Saturday
    Mostly Sunny
    59°
    Forecast night icon
    Night
    Mostly Cloudy
    48°
    Saturday 4/27
    Day
    59°
    Mostly Sunny
    Forecast day icon
    Night
    48°
    Mostly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Mostly sunny. Highs in the upper 50s. South winds 10 to 15 mph. Gusts up to 25 mph in the afternoon.
    Night Details
    Mostly cloudy. A slight chance of showers after midnight. Lows in the mid 40s. South winds 10 to 15 mph. Gusts up to 25 mph in the evening. Chance of rain 20 percent.
  • Forecast day icon
    Sunday
    Partly Sunny
    69°
    Forecast night icon
    Night
    Partly Cloudy
    58°
    Sunday 4/28
    Day
    69°
    Partly Sunny
    Forecast day icon
    Night
    58°
    Partly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Mostly cloudy in the morning then becoming partly sunny. Highs in the upper 60s.
    Night Details
    Partly cloudy. Lows in the lower 50s.
  • Forecast day icon
    Monday
    Mostly Sunny
    75°
    Forecast night icon
    Night
    Partly Cloudy
    55°
    Monday 4/29
    Day
    75°
    Mostly Sunny
    Forecast day icon
    Night
    55°
    Partly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Mostly sunny. Highs in the mid 70s.
    Night Details
    Partly cloudy in the evening then becoming mostly cloudy. Lows around 50.
  • Forecast day icon
    Tuesday
    30% Chance Rain Showers
    63°
    Forecast night icon
    Night
    30% Chance Rain Showers
    54°
    Tuesday 4/30
    Day
    63°
    30% Chance Rain Showers
    Forecast day icon
    Night
    54°
    30% Chance Rain Showers
    Forecast night icon
    Hourly
    Day Details
    Partly sunny. A chance of showers in the afternoon. Highs in the mid 60s. Chance of rain 30 percent.
    Night Details
    Mostly cloudy with a chance of showers. Lows in the lower 50s. Chance of rain 30 percent.
  • Forecast day icon
    Wednesday
    Mostly Sunny
    66°
    Forecast night icon
    Night
    Partly Cloudy
    54°
    Wednesday 5/1
    Day
    66°
    Mostly Sunny
    Forecast day icon
    Night
    54°
    Partly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Mostly sunny. Highs in the lower 70s.
    Night Details
    Partly cloudy. Lows in the lower 50s.
  • Forecast day icon
    Thursday
    Mostly Sunny
    69°
    Forecast night icon
    Night
    30% Chance of Rain
    54°
    Thursday 5/2
    Day
    69°
    Mostly Sunny
    Forecast day icon
    Night
    54°
    30% Chance of Rain
    Forecast night icon
    Hourly
    Day Details
    Mostly sunny. Highs in the upper 60s.
    Night Details
    Mostly clear with a slight chance of rain. Chance of precipitation 30%. Low temperature around 54F. Dew point will be around 51F with an average humidity of 83%. Winds will be 1 mph from the N.
  • Forecast day icon
    Friday
    Partly Cloudy
    65°
    Forecast night icon
    Night
    Partly Cloudy
    52°
    Friday 5/3
    Day
    65°
    Partly Cloudy
    Forecast day icon
    Night
    52°
    Partly Cloudy
    Forecast night icon
    Day Details
    Partly cloudy. High temperature around 65F. Dew point will be around 51F with an average humidity of 71%. Winds will be 5 mph from the NW.
    Night Details
    Partly cloudy. Low temperature around 52F. Dew point will be around 47F with an average humidity of 77%. Winds will be 8 mph from the N.
  • Forecast day icon
    Saturday
    Sunny
    64°
    Forecast night icon
    Night
    Clear
    51°
    Saturday 5/4
    Day
    64°
    Sunny
    Forecast day icon
    Night
    51°
    Clear
    Forecast night icon
    Day Details
    Sunny. High temperature around 64F. Dew point will be around 45F with an average humidity of 60%. Winds will be 9 mph from the NW.
    Night Details
    Clear. Low temperature around 51F. Dew point will be around 43F with an average humidity of 68%. Winds will be 7 mph from the N.