Rialto, California gets 14 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Rialto averages 0 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 282 sunny days per year in Rialto. The US average is 205 sunny days.
Rialto gets some kind of precipitation, on average, 40 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 95 degrees
Winter Low: the January low is 42
Rain: averages 14 inches of rain a year
Snow: averages 0 inches of snow a year
BESTPLACES COMFORT INDEX
The annual BestPlaces Comfort Index for Rialto is 8.6 (10=best), which means it is more comfortable than most places in California.
8.6 / 10
May, October and April are the most pleasant months in Rialto, while August and July are the least comfortable months.