10-Day Weather Forecast - Port Jefferson, NY

Partly sunny. A slight chance of snow showers in the afternoon. Breezy with highs in the mid 30s. West winds 15 to 25 mph with gusts up to 45 mph. Chance of snow 20 percent.

Mostly cloudy in the evening then becoming partly cloudy. Blustery with lows in the mid 20s. West winds 15 to 25 mph. Gusts up to 45 mph decreasing to 35 mph after midnight.

Mostly sunny. Highs in the mid 30s. West winds 15 to 20 mph with gusts up to 30 mph.

Partly cloudy. Lows in the mid 20s.

Partly sunny. Highs in the upper 30s.

Mostly cloudy. A chance of snow after midnight. Lows in the mid 20s. Chance of snow 40 percent.

Mostly cloudy with a chance of snow in the morning then partly sunny in the afternoon. Highs in the lower 30s. Chance of snow 40 percent.

Partly cloudy in the evening then clearing. Lows around 20.

Sunny. Highs in the lower 30s.

Mostly cloudy in the evening then becoming partly cloudy. Lows in the lower 20s.

Mostly sunny. Highs in the mid 30s.

Partly cloudy. Lows in the mid 20s.

Partly sunny. Highs in the lower 40s.

Cloudy with a slight chance of rain. Chance of precipitation 30%. Low temperature around 36F. Dew point will be around 30F with an average humidity of 76%. Winds will be 11 mph from the SW.

Cloudy with a chance of rain. Chance of precipitation 40%. High temperature around 42F. Dew point will be around 33F with an average humidity of 76%. Winds will be 12 mph from the SW.

Cloudy with a chance of rain. Chance of precipitation 40%. Low temperature around 37F. Dew point will be around 33F with an average humidity of 77%. Winds will be 13 mph from the W.

Mostly sunny with a slight chance of rain. Chance of precipitation 25%. High temperature around 40F. Dew point will be around 28F with an average humidity of 64%. Winds will be 12 mph from the W.

Partly cloudy. Low temperature around 34F. Dew point will be around 26F with an average humidity of 69%. Winds will be 5 mph from the W.