San Dimas, CA has a warm Mediterranean climate with hot summers and mild winters. Temperatures in the summer months typically range from 70 to 90 degrees Fahrenheit and in the winter months they stay around 45 to 55 degrees Fahrenheit. Rainfall is scarce throughout the year, with most of the precipitation coming during the winter months. The city experiences very little snowfall and only occasional showers throughout the year. This makes San Dimas an ideal location for those who like long days of sunshine and warm temperatures.
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.
Weather Highlights
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