Fullerton, CA has a warm Mediterranean climate with hot summers and mild winters. The average summer high temperature is around 78°F while winter lows can dip to around 48°F. Rainfall is light in the area, with an average of only about 12 inches per year. Most of the rain falls during the winter months, when temperatures are cooler and humidity is higher. Overall, Fullerton's climate is very pleasant throughout the year and makes it a great place to live or visit.
Fullerton, California gets 14 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Fullerton averages 0 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 283 sunny days per year in Fullerton. The US average is 205 sunny days.
Fullerton 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 85 degrees
Winter Low: the January low is 46
Rain: averages 14 inches of rain a year
Snow: averages 0 inches of snow a year