10-Day Weather Forecast - Herndon, VA

Sunny. Highs in the mid 40s. Northwest winds around 5 mph becoming south around 5 mph in the afternoon.

Cloudy. A slight chance of snow in the evening then a chance of rain snow and sleet after midnight. Lows in the mid 30s. South winds 5 to 10 mph. Chance of precipitation 40 percent.

Mostly cloudy. Highs in the lower 50s. Southwest winds 5 to 10 mph.

Mostly cloudy in the evening then clearing. Lows around 40. West winds 5 to 10 mph.

Mostly sunny. Highs in the lower 50s.

Mostly cloudy with a 30 percent chance of rain. Lows in the upper 30s.

Mostly cloudy with a 30 percent chance of rain. Highs in the mid 50s.

Mostly cloudy. Lows in the upper 40s.

Mostly cloudy with a 30 percent chance of rain. Highs in the mid 60s.

Mostly cloudy. Lows in the lower 40s.

Mostly cloudy. Highs in the mid 50s.

Mostly cloudy. Lows around 40.

Mostly cloudy with a 30 percent chance of rain. Highs in the mid 50s.

Partly cloudy. Low temperature around 32F. Dew point will be around 30F with an average humidity of 74%. Winds will be 5 mph from the NW.

Mostly sunny. High temperature around 42F. Dew point will be around 26F with an average humidity of 61%. Winds will be 7 mph from the NW.

Clear. Low temperature around 29F. Dew point will be around 24F with an average humidity of 70%. Winds will be 6 mph from the NW.

Sunny. High temperature around 42F. Dew point will be around 23F with an average humidity of 58%. Winds will be 3 mph from the NW.

Mostly clear. Low temperature around 30F. Dew point will be around 24F with an average humidity of 69%. Winds will be 2 mph from the W.