Average monthly snow and rainfall in Herndon
The mean monthly precipitation over the year in Herndon (Virginia), including rain, snow, hail.
- A lot of rain (rainy season) falls in the months: May, June, September and October.
- On average, October is the wettest month with 134 mm of precipitation.
- On average, February is the driest month with 63 mm of precipitation.
- The average amount of annual precipitation is 1116 mm.
Forecast for Herndon
broken clouds and chance of slight rain
broken clouds and thunder
partly cloudy and thunder