Napa County, California gets 33 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Napa County averages 0 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 262 sunny days per year in Napa County. The US average is 205 sunny days.
Napa County 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.
Summer High: the July high is around 87 degrees
Winter Low: the January low is 38
Rain: averages 33 inches of rain a year
Snow: averages 0 inches of snow a year
BESTPLACES COMFORT INDEX
The annual BestPlaces Comfort Index for Napa County is 8.3 (10=best), which means it is more comfortable than most places in California.
9.1 / 7.1
Summer / Winter
June, May and September are the most pleasant months in Napa County, while December and January are the least comfortable months.