10-Day Weather Forecast - Islip, NY

Mostly sunny. Humid with highs in the upper 80s. West winds 5 to 10 mph. Gusts up to 20 mph in the afternoon. Heat index values in the upper 90s.

Mostly cloudy with a chance of showers and thunderstorms in the evening then partly cloudy with a chance of showers after midnight. Lows in the upper 60s. West winds 5 to 10 mph becoming northwest after midnight. Chance of rain 40 percent.

Sunny. Highs in the upper 80s. Northwest winds 5 to 10 mph.

Mostly clear. Lows in the upper 60s. West winds 5 to 10 mph.

Mostly sunny. Highs in the lower 80s.

Showers. Lows in the lower 60s. Chance of rain 80 percent.

Partly sunny. A chance of showers in the morning. Highs in the upper 70s. Chance of rain 50 percent.

Partly cloudy. Lows in the lower 60s.

Mostly sunny. Highs in the upper 70s.

Partly cloudy. Lows in the lower 60s.

Mostly sunny. Highs in the upper 70s.

Partly cloudy. Lows in the mid 60s.

Mostly sunny. Highs in the upper 70s.

Mostly clear with a chance of rain. Chance of precipitation 60%. Low temperature around 70F. Dew point will be around 67F with an average humidity of 84%. Winds will be 9 mph from the SW.

Sunny with a slight chance of rain. Chance of precipitation 30%. High temperature around 81F. Dew point will be around 65F with an average humidity of 65%. Winds will be 10 mph from the W.

Mostly clear. Low temperature around 66F. Dew point will be around 61F with an average humidity of 74%. Winds will be 7 mph from the W.

Sunny. High temperature around 79F. Dew point will be around 59F with an average humidity of 58%. Winds will be 8 mph from the W.

Mostly clear. Low temperature around 65F. Dew point will be around 59F with an average humidity of 71%. Winds will be 6 mph from the W.