Average monthly hours of sunshine in Herndon
The monthly total of sunhours over the year in Herndon (Virginia), the United States of America.
- On average, June is the sunniest month with 282 hours of sunshine.
- December has on average the lowest amount of sunshine with 130 hours.
- On average, the total annual amount of sun is 2520 hours.
Forecast for Herndon
broken clouds and chance of slight rain
broken clouds and thunder
partly cloudy and thunder