Weather in Port Jefferson, New York, United States

7-Day Detailed Weather Forecast for Port Jefferson

Tonight

Temperature: 48°F

Wind Speed: 7 mph

Wind Direction: SE

Forecast: Areas of fog between 11pm and 5am, then a chance of rain showers and patchy fog. Mostly cloudy, with a low around 48. Southeast wind around 7 mph. Chance of precipitation is 30%.

Sunday

Temperature: 55°F

Wind Speed: 7 to 18 mph

Wind Direction: N

Forecast: Rain showers and patchy fog. Cloudy. High near 55, with temperatures falling to around 47 in the afternoon. North wind 7 to 18 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch possible.

Sunday Night

Temperature: 41°F

Wind Speed: 8 to 15 mph

Wind Direction: W

Forecast: A slight chance of rain showers before 8pm. Partly cloudy, with a low around 41. West wind 8 to 15 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.

Monday

Temperature: 49°F

Wind Speed: 9 to 14 mph

Wind Direction: NW

Forecast: A slight chance of rain showers after 8am. Mostly sunny. High near 49, with temperatures falling to around 47 in the afternoon. Northwest wind 9 to 14 mph. Chance of precipitation is 20%.

Monday Night

Temperature: 36°F

Wind Speed: 14 mph

Wind Direction: NW

Forecast: A slight chance of rain showers before 8pm. Partly cloudy, with a low around 36. Northwest wind around 14 mph. Chance of precipitation is 20%.

Tuesday

Temperature: 49°F

Wind Speed: 5 to 13 mph

Wind Direction: W

Forecast: Sunny, with a high near 49.

Tuesday Night

Temperature: 42°F

Wind Speed: 13 mph

Wind Direction: S

Forecast: A slight chance of rain showers after 2am. Partly cloudy, with a low around 42.

Wednesday

Temperature: 56°F

Wind Speed: 12 mph

Wind Direction: SW

Forecast: A slight chance of rain showers before 2pm. Mostly cloudy, with a high near 56.

Wednesday Night

Temperature: 44°F

Wind Speed: 8 mph

Wind Direction: NW

Forecast: Partly cloudy, with a low around 44.

Thursday

Temperature: 61°F

Wind Speed: 7 mph

Wind Direction: NW

Forecast: Sunny, with a high near 61.

Thursday Night

Temperature: 49°F

Wind Speed: 7 mph

Wind Direction: NW

Forecast: Partly cloudy, with a low around 49.

Friday

Temperature: 60°F

Wind Speed: 5 to 8 mph

Wind Direction: NW

Forecast: Mostly sunny, with a high near 60.

Friday Night

Temperature: 48°F

Wind Speed: 8 mph

Wind Direction: SE

Forecast: A slight chance of rain showers after 2am. Partly cloudy, with a low around 48.

Saturday

Temperature: 57°F

Wind Speed: 9 mph

Wind Direction: E

Forecast: A chance of rain showers. Partly sunny, with a high near 57.