Port Jefferson, New York | 10-Day Weather Forecasts & Weekend Weather | WeatherBug
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10 Day Forecast
  • Forecast night icon
    Night
    Partly Cloudy
    40°
    Wednesday 4/24
    Forecast night icon
    40°
    Partly Cloudy
    Hourly
    Night Details
    Partly cloudy with isolated showers this evening then mostly clear after midnight. Lows in the mid 30s. North winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 20 percent.
  • Forecast day icon
    Thursday
    Sunny
    54°
    Forecast night icon
    Night
    Clear
    39°
    Thursday 4/25
    Day
    54°
    Sunny
    Forecast day icon
    Night
    39°
    Clear
    Forecast night icon
    Hourly
    Day Details
    Sunny. Highs in the mid 50s. Northeast winds 10 to 15 mph.
    Night Details
    Clear. Lows in the mid 30s. South winds 5 to 10 mph.
  • Forecast day icon
    Friday
    Sunny
    55°
    Forecast night icon
    Night
    Mostly Clear
    42°
    Friday 4/26
    Day
    55°
    Sunny
    Forecast day icon
    Night
    42°
    Mostly Clear
    Forecast night icon
    Hourly
    Day Details
    Sunny. Highs in the upper 50s. Northeast winds around 5 mph becoming southeast in the afternoon.
    Night Details
    Mostly clear. Lows in the upper 30s. South winds 5 to 10 mph.
  • Forecast day icon
    Saturday
    Mostly Sunny
    59°
    Forecast night icon
    Night
    30% Chance Rain Showers
    46°
    Saturday 4/27
    Day
    59°
    Mostly Sunny
    Forecast day icon
    Night
    46°
    30% Chance Rain Showers
    Forecast night icon
    Hourly
    Day Details
    Mostly sunny. Highs in the upper 50s.
    Night Details
    Mostly cloudy. A chance of showers after midnight. Lows in the mid 40s. Chance of rain 30 percent.
  • Forecast day icon
    Sunday
    30% Chance Rain Showers
    67°
    Forecast night icon
    Night
    Mostly Cloudy
    56°
    Sunday 4/28
    Day
    67°
    30% Chance Rain Showers
    Forecast day icon
    Night
    56°
    Mostly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Mostly cloudy with a chance of showers in the morning then partly sunny in the afternoon. Highs in the mid 60s. Chance of rain 30 percent.
    Night Details
    Mostly cloudy. Lows in the lower 50s.
  • Forecast day icon
    Monday
    Mostly Sunny
    80°
    Forecast night icon
    Night
    Mostly Cloudy
    55°
    Monday 4/29
    Day
    80°
    Mostly Sunny
    Forecast day icon
    Night
    55°
    Mostly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Mostly sunny. Highs in the lower 70s.
    Night Details
    Mostly cloudy. Lows in the lower 50s.
  • Forecast day icon
    Tuesday
    Partly Sunny
    66°
    Forecast night icon
    Night
    30% Chance Rain Showers
    51°
    Tuesday 4/30
    Day
    66°
    Partly Sunny
    Forecast day icon
    Night
    51°
    30% Chance Rain Showers
    Forecast night icon
    Hourly
    Day Details
    Partly sunny. Highs in the upper 60s.
    Night Details
    Mostly cloudy with a chance of showers. Lows in the lower 50s. Chance of rain 30 percent.
  • Forecast day icon
    Wednesday
    30% Chance Rain Showers
    69°
    Forecast night icon
    Night
    Partly Cloudy
    53°
    Wednesday 5/1
    Day
    69°
    30% Chance Rain Showers
    Forecast day icon
    Night
    53°
    Partly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Partly sunny. A chance of showers in the morning. Highs in the upper 60s. Chance of rain 30 percent.
    Night Details
    Partly cloudy. Low temperature around 53F. Dew point will be around 51F with an average humidity of 82%. Winds will be 5 mph from the N.
  • Forecast day icon
    Thursday
    Partly Cloudy
    69°
    Forecast night icon
    Night
    Clear
    53°
    Thursday 5/2
    Day
    69°
    Partly Cloudy
    Forecast day icon
    Night
    53°
    Clear
    Forecast night icon
    Day Details
    Partly cloudy. High temperature around 69F. Dew point will be around 51F with an average humidity of 66%. Winds will be 3 mph from the N.
    Night Details
    Clear. Low temperature around 53F. Dew point will be around 50F with an average humidity of 80%. Winds will be 2 mph from the SW.
  • Forecast day icon
    Friday
    Sunny
    68°
    Forecast night icon
    Night
    Partly Cloudy
    52°
    Friday 5/3
    Day
    68°
    Sunny
    Forecast day icon
    Night
    52°
    Partly Cloudy
    Forecast night icon
    Day Details
    Sunny. High temperature around 68F. Dew point will be around 50F with an average humidity of 64%. Winds will be 4 mph from the N.
    Night Details
    Partly cloudy. Low temperature around 52F. Dew point will be around 49F with an average humidity of 77%. Winds will be 5 mph from the N.