Graton, CA has a warm-summer Mediterranean climate, which is characterized by hot, dry summers and mild, wet winters. During the summer months, temperatures can be quite hot with average highs in the mid to upper 80s Fahrenheit. Winters are generally mild with temperatures reaching the mid 50s and above on average. Rainfall is spread throughout the year, but tends to peak in winter when the area receives an average of 40 inches of precipitation annually.
Graton, California gets 37 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Graton averages 0 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 258 sunny days per year in Graton. The US average is 205 sunny days.
Graton gets some kind of precipitation, on average, 77 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 83 degrees
Winter Low: the January low is 37
Rain: averages 37 inches of rain a year
Snow: averages 0 inches of snow a year