San Bernardino, CA has a warm Mediterranean climate, with hot summers and mild winters. The city generally enjoys sunny and dry weather, although occasional rain does occur throughout the year. During the summer months of June through August, the temperature averages in the low to mid 90s during the day and high 60s at night. Winters are much cooler, with temperatures ranging from the low 40s to mid 60s during the day and lower 30s at night. On average, San Bernardino receives about 15 inches of precipitation annually.
San Bernardino, California gets 13 inches of rain, on average, per year. The US average is 38 inches of rain per year.
San Bernardino averages 0 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 280 sunny days per year in San Bernardino. The US average is 205 sunny days.
San Bernardino 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.
Weather Highlights
Summer High: the July high is around 95 degrees
Winter Low: the January low is 42
Rain: averages 13 inches of rain a year
Snow: averages 0 inches of snow a year