10-Day Weather Forecast - Port Jefferson, NY

Showers with a chance of thunderstorms. Patchy fog. Breezy with highs in the upper 50s. South winds 15 to 25 mph. Gusts up to 35 mph increasing to 45 mph in the afternoon. Chance of rain 90 percent.

Patchy fog in the evening. Showers with a chance of thunderstorms in the evening then showers with a slight chance of thunderstorms after midnight. Some thunderstorms may produce gusty winds in the evening. Windy with lows in the mid 30s. South winds 20 to 30 mph becoming southwest after midnight. Gusts up to 50 mph. Chance of rain near 100 percent.

Partly sunny. A chance of rain showers in the morning. Breezy cooler with highs in the lower 40s. West winds 15 to 25 mph with gusts up to 35 mph. Chance of rain 50 percent.

Partly cloudy in the evening then clearing. Lows in the mid 20s.

Mostly sunny. Highs in the upper 30s.

Mostly cloudy. Lows in the upper 20s.

Partly sunny. Highs in the mid 40s.

Partly cloudy in the evening then becoming mostly cloudy. Lows in the lower 30s.

Mostly sunny. Highs in the upper 40s.

Partly cloudy in the evening then mostly cloudy with a chance of rain after midnight. Lows in the mid 30s. Chance of rain 40 percent.

Mostly cloudy in the morning then becoming partly sunny. A 40 percent chance of rain. Highs around 50.

Mostly cloudy. A chance of rain in the evening. Lows in the mid 30s. Chance of rain 30 percent.

Mostly sunny. Highs in the upper 40s.

Partly cloudy. Low temperature around 30F. Dew point will be around 22F with an average humidity of 61%. Winds will be 8 mph from the NW.

Cloudy. High temperature around 42F. Dew point will be around 25F with an average humidity of 61%. Winds will be 8 mph from the NW.

Partly cloudy. Low temperature around 29F. Dew point will be around 24F with an average humidity of 67%. Winds will be 9 mph from the N.

Sunny. High temperature around 43F. Dew point will be around 22F with an average humidity of 54%. Winds will be 8 mph from the NW.

Mostly clear. Low temperature around 33F. Dew point will be around 26F with an average humidity of 64%. Winds will be 4 mph from the NW.