10-Day Weather Forecast - Port Jefferson, NY
- 80|60°FSunnyHourly details
Today
80°FSunny. Highs around 80. South winds around 5 mph increasing to 10 to 15 mph this afternoon.
Tonight
60°FMostly cloudy with a slight chance of showers in the evening then partly cloudy after midnight. Lows in the upper 50s. Southwest winds 5 to 10 mph. Gusts up to 20 mph in the evening. Chance of rain 20 percent.
- 80|59°FPartly SunnyHourly details
Day
80°FPartly sunny. A slight chance of showers in the afternoon. Highs around 80. Southwest winds 5 to 10 mph. Chance of rain 20 percent.
Night
59°FMostly cloudy. A chance of showers with a slight chance of thunderstorms in the evening then a chance of showers after midnight. Lows in the mid 50s. Southwest winds 5 to 10 mph. Chance of rain 40 percent.
- 81|58°FPartly SunnyHourly details
Day
81°FPartly sunny. Highs in the mid 70s. Southwest winds 5 to 10 mph.
Night
58°FMostly cloudy. Lows in the mid 50s.
- 72|51°F50% Chance Rain ShowersHourly details
Day
72°FMostly cloudy in the morning then becoming partly sunny. A 50 percent chance of showers. Highs in the lower 70s.
Night
51°FMostly cloudy. A chance of showers in the evening. Lows around 50. Chance of rain 50 percent.
Weekend Weather
- 63|48°FPartly SunnyHourly details
Day
63°FPartly sunny. Highs in the lower 60s.
Night
48°FMostly cloudy. Lows in the upper 40s.
- 62|47°F50% Chance Rain ShowersHourly details
Day
62°FMostly cloudy with a 50 percent chance of showers. Highs in the lower 60s.
Night
47°FMostly cloudy with a 50 percent chance of showers. Lows in the lower 40s.
- 55|35°FMostly Sunny
Day
55°FMostly sunny. Highs in the mid 50s.
Night
35°FMostly clear. Low temperature around 35F. Dew point will be around 24F with an average humidity of 53%. Winds will be 10 mph from the NW.
- 54|42°FSunny
Day
54°FSunny. High temperature around 54F. Dew point will be around 25F with an average humidity of 42%. Winds will be 5 mph from the NW.
Night
42°FClear. Low temperature around 42F. Dew point will be around 30F with an average humidity of 57%. Winds will be 3 mph from the SW.
- 63|49°FSunny
Day
63°FSunny. High temperature around 63F. Dew point will be around 39F with an average humidity of 54%. Winds will be 5 mph from the SW.
Night
49°FPartly cloudy with a slight chance of rain. Chance of precipitation 25%. Low temperature around 49F. Dew point will be around 44F with an average humidity of 75%. Winds will be 2 mph from the SW.
- 64|50°F30% Chance of Rain
Day
64°FPartly cloudy with a slight chance of rain. Chance of precipitation 25%. High temperature around 64F. Dew point will be around 46F with an average humidity of 65%. Winds will be 3 mph from the SE.
Night
50°FCloudy with a slight chance of rain. Chance of precipitation 30%. Low temperature around 50F. Dew point will be around 46F with an average humidity of 79%. Winds will be 3 mph from the SE.













