Weather Forecast and Radar for Fullerton, California

Weather in Fullerton, CA

Fullerton, California, United States is known for its mild Mediterranean climate. During the winter months, temperatures typically range from the mid-40s to mid-60s Fahrenheit, with occasional colder days and rainfall. Summer months in Fullerton generally range from the mid-60s to low-90s Fahrenheit. The average number of days with temperatures over 90 degrees Fahrenheit is 40-50 days per year.

In the spring, temperatures can range from the mid-50s to mid-70s Fahrenheit and the weather is generally mild. During the summer months, temperatures can reach into the 90s, but temperatures are usually comfortable due to the coastal breezes.

The fall months in Fullerton generally bring temperatures in the mid-50s to mid-70s Fahrenheit and mild weather. October and November are the rainiest months in Fullerton with an average of 5-7 inches of rain per month.

Fullerton enjoys sunshine throughout the year with an average of 300 sunny days annually and very little snowfall.

Fast Facts About Fullerton, CA

As of 2020, the city population is 141061.

Major Cities Nearby Fullerton, CA

This map shows the current & 7-day weather forecast, weather alerts, and weather radar for Fullerton, California.