10-Day Weather Forecast - Herndon, VA

Mostly sunny. Showers and thunderstorms likely in the afternoon. Highs in the mid 90s. South winds around 5 mph. Chance of rain 70 percent.

Showers with thunderstorms likely in the evening then showers with a slight chance of thunderstorms after midnight. Lows around 70. East winds around 5 mph becoming north after midnight. Chance of rain 80 percent.

Mostly cloudy. A chance of showers in the morning then a chance of showers and thunderstorms in the afternoon. Highs in the upper 70s. North winds 5 to 10 mph. Chance of rain 50 percent.

Mostly cloudy with a chance of showers in the evening then partly cloudy after midnight. Lows in the lower 60s. North winds 5 to 10 mph. Chance of rain 50 percent.

Mostly sunny. Highs in the lower 80s.

Mostly clear. Lows in the lower 60s.

Mostly sunny. Highs in the lower 80s.

Partly cloudy. Lows in the lower 60s.

Mostly sunny. Highs in the mid 80s.

Partly cloudy. Lows in the mid 60s.

Partly sunny. Highs in the mid 80s.

Mostly cloudy. Lows in the upper 60s.

Partly sunny with a chance of showers. Highs in the lower 80s. Chance of rain 40 percent.

Partly cloudy with a slight chance of rain. Chance of precipitation 30%. Low temperature around 71F. Dew point will be around 68F with an average humidity of 82%. Winds will be 2 mph from the SE.

Mostly sunny with a slight chance of rain. Chance of precipitation 30%. High temperature around 88F. Dew point will be around 71F with an average humidity of 73%. Winds will be 2 mph from the S.

Mostly clear with a chance of rain. Chance of precipitation 35%. Low temperature around 72F. Dew point will be around 70F with an average humidity of 83%. Winds will be 3 mph from the SE.

Mostly sunny. High temperature around 92F. Dew point will be around 72F with an average humidity of 70%. Winds will be 2 mph from the S.

Clear with a slight chance of rain. Chance of precipitation 30%. Low temperature around 74F. Dew point will be around 71F with an average humidity of 80%. Winds will be 3 mph from the S.