10-Day Weather Forecast - Sayville, NY

Partly sunny. A chance of thunderstorms in the afternoon. Some thunderstorms may produce gusty winds and heavy rainfall in the afternoon. Humid with highs in the lower 80s. Southwest winds 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Chance of precipitation 30 percent.

Mostly cloudy. A slight chance of showers and thunderstorms in the evening then a chance of showers with a slight chance of thunderstorms after midnight. Some thunderstorms may produce gusty winds and heavy rainfall in the evening. Humid with lows in the lower 70s. Southwest winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 30 percent.

Partly sunny. A chance of showers and thunderstorms in the afternoon. Some thunderstorms may produce gusty winds and heavy rainfall in the afternoon. Humid with highs in the upper 80s. West winds 5 to 10 mph. Gusts up to 20 mph in the afternoon. Chance of rain 40 percent. Heat index values in the upper 90s.

Mostly cloudy. A chance of showers and thunderstorms in the evening then a slight chance of showers with a chance of thunderstorms after midnight. Some thunderstorms may produce gusty winds and heavy rainfall. Humid with lows in the lower 70s. Northwest winds 5 to 10 mph. Gusts up to 20 mph in the evening. Chance of rain 40 percent.

Partly sunny. Highs in the mid 80s.

Partly cloudy. Lows in the upper 60s.

Sunny. Highs in the lower 80s.

Mostly clear in the evening then becoming partly cloudy. Lows in the upper 60s.

Sunny. Highs in the lower 80s.

Mostly clear. Lows around 70.

Sunny. Highs in the mid 80s.

Mostly clear in the evening then becoming partly cloudy. Lows in the lower 70s.

Sunny. Highs in the upper 80s. Heat index values in the upper 90s.

Partly cloudy with a 25% chance for rain and thunderstorms. Low temperature around 69F. Dew point will be around 66F with an average humidity of 78%. Winds will be 5 mph from the W.

Partly cloudy. High temperature around 80F. Dew point will be around 66F with an average humidity of 71%. Winds will be 4 mph from the NW.

Partly cloudy with a slight chance of rain. Chance of precipitation 25%. Low temperature around 69F. Dew point will be around 65F with an average humidity of 79%. Winds will be 4 mph from the W.

Mostly sunny. High temperature around 80F. Dew point will be around 65F with an average humidity of 69%. Winds will be 6 mph from the NW.

Mostly clear. Low temperature around 68F. Dew point will be around 63F with an average humidity of 76%. Winds will be 4 mph from the W.