Yountville Water Details

Water years begin every October 1st and end September 30th of the following year. Yountville’s Mean Average Precipitation is historically 29.21 Inches per year.  Using the Napa One Rain Gauge located on Hopper Creek at SR 29, Yountville’s Mean Average Precipitation for the last 2-years was only 13.26 inches.  For the last 5-years, it was only 27.35 inches, thanks to two significant years in 2017 and 2019.  For the last 10-years, it was only 24.89 inches.

Notify of
Inline Feedbacks
View all comments