10-Day Weather Forecast - Smithtown, NY

Sunny cold with highs in the lower 20s. West winds 15 to 20 mph with gusts up to 30 mph.

Mostly clear. Lows around 14. West winds 15 to 20 mph diminishing to 5 to 10 mph after midnight.

Sunny in the morning then becoming partly sunny. Not as cool with highs in the upper 30s. Southwest winds 10 to 15 mph. Gusts up to 25 mph in the afternoon.

Mostly cloudy in the evening then becoming partly cloudy. Not as cool with lows in the lower 30s.

Mostly sunny. Highs in the lower 40s.

Partly cloudy. Lows in the mid 20s.

Partly sunny. Highs in the lower 30s.

Mostly cloudy. Lows around 10 above. Wind chill values as low as zero.

Mostly cloudy. Cold with highs around 20. Wind chill values as low as 5 below.

Mostly cloudy. A chance of snow after midnight. Lows around 10 above. Chance of snow 30 percent. Wind chill values as low as 5 below after midnight.

Mostly cloudy with a 30 percent chance of snow. Cold with highs around 20. Wind chill values as low as 5 below in the morning.

Mostly cloudy with a 30 percent chance of snow. Lows around 10 above. Wind chill values as low as 5 below.

Partly sunny. Cold with highs in the lower 20s. Wind chill values as low as 5 below in the morning.

Partly cloudy. Low temperature around 13F. Dew point will be around 7F with an average humidity of 67%. Winds will be 9 mph from the NW.

Mostly sunny. High temperature around 24F. Dew point will be around 9F with an average humidity of 60%. Winds will be 10 mph from the NW.

Partly cloudy. Low temperature around 14F. Dew point will be around 8F with an average humidity of 67%. Winds will be 7 mph from the NW.

Sunny. High temperature around 25F. Dew point will be around 11F with an average humidity of 64%. Winds will be 5 mph from the NW.

Clear with a slight chance of snow. Chance of precipitation 25%. Low temperature around 16F. Dew point will be around 11F with an average humidity of 70%. Winds will be 5 mph from the NW.