San Geronimo, California gets 41 inches of rain, on average, per year. The US average is 38 inches of rain per year.
San Geronimo averages 0 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 260 sunny days per year in San Geronimo. The US average is 205 sunny days.
San Geronimo gets some kind of precipitation, on average, 78 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 79 degrees
Winter Low: the January low is 42
Rain: averages 41 inches of rain a year
Snow: averages 0 inches of snow a year
BESTPLACES COMFORT INDEX
The annual BestPlaces Comfort Index for San Geronimo is 8.5 (10=best), which means it is more comfortable than most places in California.
8.5 / 10
August, July and September are the most pleasant months in San Geronimo, while January and December are the least comfortable months.