Charter Oak, California is located in the San Gabriel Valley and enjoys a Mediterranean climate with warm summers and mild winters. Temperatures are usually moderate throughout the year, rarely exceeding 90°F during summer months and rarely dropping below freezing during winter months. Rainfall is fairly low year-round, averaging less than 10 inches of precipitation each year. The area experiences most of its rainfall during the winter months, with October typically being the wettest month of the year. Charter Oak also experiences plenty of sunshine throughout the year, making it an ideal location for outdoor activities.
Charter Oak, California gets 19 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Charter Oak averages 0 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 288 sunny days per year in Charter Oak. The US average is 205 sunny days.
Charter Oak gets some kind of precipitation, on average, 37 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 89 degrees
Winter Low: the January low is 43
Rain: averages 19 inches of rain a year
Snow: averages 0 inches of snow a year