San Dimas, California gets 19 inches of rain, on average, per year. The US average is 38 inches of rain per year.
San Dimas averages 0 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 277 sunny days per year in San Dimas. The US average is 205 sunny days.
San Dimas gets some kind of precipitation, on average, 32 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 91 degrees
Winter Low: the January low is 45
Rain: averages 19 inches of rain a year
Snow: averages 0 inches of snow a year
BESTPLACES COMFORT INDEX
The annual BestPlaces Comfort Index for San Dimas is 8.9 (10=best), which means it is more comfortable than most places in California.
8.8 / 8.7
Summer / Winter
May, June and October are the most pleasant months in San Dimas, while August and January are the least comfortable months.