Yountville, CA is located in the heart of Napa Valley and has a Mediterranean climate with hot summers and cool, wet winters. Average temperatures range from high 70s in the summer to low 40s in the winter. The area is well known for its foggy mornings, especially during the months of June and July. Rainfall totals are high due to coastal influences, with most rain falling between November and April. Winters are milder than many other areas of California due to its proximity to the Pacific Ocean. Yountville is an ideal location for grape-growing; it’s known as one of the best locations in California for producing quality wines.
Yountville, California gets 31 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Yountville averages 0 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 266 sunny days per year in Yountville. The US average is 205 sunny days.
Yountville gets some kind of precipitation, on average, 69 days per year. Precipitation is rain, snow, sleet, or hail that falls to the ground. In order for precipitation to be counted you have to get at least .01 inches on the ground to measure.
Weather Highlights
Summer High: the July high is around 85 degrees
Winter Low: the January low is 38
Rain: averages 31 inches of rain a year
Snow: averages 0 inches of snow a year