10-Day Weather Forecast - Port Jefferson, NY
- 59|49°FThunderstormsHourly details
Today
59°FShowers this morning then showers with a slight chance of thunderstorms this afternoon. Highs in the mid 60s. Southeast winds around 5 mph becoming northwest this afternoon. Chance of rain 90 percent.
Tonight
49°FMostly cloudy with a chance of showers in the evening then partly cloudy with a slight chance of showers after midnight. Lows in the lower 50s. Northwest winds 5 to 10 mph. Chance of rain 40 percent.
- 62|52°F30% Chance Rain ShowersHourly details
Day
62°FPartly sunny. A chance of showers mainly in the morning. Highs in the mid 60s. Northwest winds 5 to 10 mph. Chance of rain 30 percent.
Night
52°FPartly cloudy in the evening then clearing. Lows in the mid 50s. North winds around 5 mph becoming west after midnight.
Weekend Weather
- 72|59°FSunnyHourly details
Day
72°FSunny. Highs in the mid 70s. Southwest winds 10 to 15 mph.
Night
59°FPartly cloudy. Lows around 60.
- 82|61°FMostly SunnyHourly details
Day
82°FMostly sunny. Highs in the lower 80s.
Night
61°FPartly cloudy. Lows around 60.
- 78|58°FMostly SunnyHourly details
Day
78°FMostly sunny. Highs in the upper 70s.
Night
58°FMostly clear in the evening then becoming partly cloudy. Lows in the upper 50s.
- 83|67°FMostly SunnyHourly details
Day
83°FMostly sunny. Highs around 80.
Night
67°FPartly cloudy. Lows in the lower 60s.
- 86|61°FMostly Sunny
Day
86°FMostly sunny. Highs in the lower 80s.
Night
61°FPartly cloudy with a chance of rain. Chance of precipitation 50%. Low temperature around 61F. Dew point will be around 60F with an average humidity of 77%. Winds will be 5 mph from the SW.
- 74|57°F40% Chance of Rain
Day
74°FPartly cloudy with a chance of rain. Chance of precipitation 35%. High temperature around 74F. Dew point will be around 55F with an average humidity of 62%. Winds will be 3 mph from the NW.
Night
57°FMostly clear with a slight chance of rain. Chance of precipitation 30%. Low temperature around 57F. Dew point will be around 54F with an average humidity of 78%. Winds will be 2 mph from the N.
- 73|57°F30% Chance of Rain
Day
73°FMostly sunny with a slight chance of rain. Chance of precipitation 30%. High temperature around 72F. Dew point will be around 54F with an average humidity of 64%. Winds will be 2 mph from the S.
Night
57°FPartly cloudy with a slight chance of rain. Chance of precipitation 30%. Low temperature around 57F. Dew point will be around 54F with an average humidity of 79%. Winds will be 2 mph from the N.
Weekend Weather
- 72|56°F30% Chance of Rain
Day
72°FMostly sunny with a slight chance of rain. Chance of precipitation 25%. High temperature around 72F. Dew point will be around 53F with an average humidity of 63%. Winds will be 2 mph from the N.
Night
56°FCloudy with a chance of rain. Chance of precipitation 35%. Low temperature around 56F. Dew point will be around 53F with an average humidity of 81%. Winds will be 1 mph from the N.













