Marine Weather Net

Port Jefferson, NY Weather Forecast




Port Jefferson, New York

 Lat: 40.95N, Lon: 73.06W

Current Conditions Updated: 856 PM EDT SUN OCT 24 2021

Mostly Cloudy
Temp: 55°F
  • Humidity:
  • 74%
  • Winds:
  • 3 MPH ESE
  • Gusts:
  • N/A MPH
  • Barometer:
  • 30.16 in.
  • Dewpoint:
  • 47°F
  • Heat index:
  • 55°F

  • Sunrise:
  • 7:11 AM EDT
  • Sunset:
  • 5:58 PM EDT
  • Moonrise:
  • 8:20 PM EDT
  • Moonset:
  • 11:04 AM EDT

TONIGHT

CHANCE OF RAIN
Lo: 55°F
Precip: 70%

MONDAY

CHANCE OF LIGHT RAIN
Hi: 71°F
Lo: 59°F
Precip: 50%

TUESDAY

RAIN
Hi: 65°F
Lo: 51°F
Precip: 90%

WEDNESDAY

CHANCE OF SHOWERS
Hi: 61°F
Lo: 49°F
Precip: 70%
Weather Forecast In Detail:
Forecast Issued: 726 PM EDT Sun Oct 24 2021

FLASH FLOOD WATCH IN EFFECT FROM MONDAY EVENING THROUGH TUESDAY AFTERNOON
Tonight...Cloudy. A slight chance of rain this evening, then rain likely after midnight. Lows in the mid 50s. South winds 10 to 15 mph. Chance of rain 70 percent.
Monday...Mostly cloudy. A chance of rain in the morning, then a slight chance of light rain in the afternoon. More humid with highs in the lower 70s. South winds 10 to 15 mph. Chance of rain 50 percent.
Monday Night...Periods of rain with isolated thunderstorms. Rain May be heavy at Times. Lows in the upper 50s. East winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 90 percent.
Tuesday...Periods of rain. Highs in the mid 60s. Northeast winds 15 to 20 mph with gusts up to 30 mph. Chance of rain 90 percent.
Tuesday Night...Rain likely in the evening, then showers likely after midnight. Breezy with lows in the lower 50s. North winds 20 to 25 mph with gusts up to 35 mph. Chance of rain 70 percent.
Wednesday...Mostly cloudy. Showers likely, mainly in the morning. Highs in the lower 60s. Chance of rain 70 percent.
Wednesday Night...Mostly cloudy in the evening, then becoming partly cloudy. Lows in the upper 40s.
Thursday...Mostly sunny. Highs around 60.
Thursday Night...Mostly cloudy. Lows in the upper 40s.
Friday...Mostly cloudy with a 50 percent chance of rain. Highs in the lower 60s.
Friday Night...Rain likely. Rain May be heavy at Times after midnight. Lows in the lower 50s. Chance of rain 70 percent.
Saturday...Showers likely. Locally heavy rainfall possible in the morning. Highs in the lower 60s. Chance of rain 60 percent.
Saturday Night...Mostly cloudy with a chance of showers. Lows in the lower 50s. Chance of rain 50 percent.
Sunday...Partly sunny with a 40 percent chance of showers. Highs in the lower 60s.
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