Altadena, CA Weather
Altadena, CA climate is warm during summer when temperatures tend to be in the 70's and cool during winter when temperatures tend to be in the 50's.
The warmest month of the year is August with an average maximum temperature of 9.99 degrees Fahrenheit, while the coldest month of the year is December with an average minimum temperature of 9.99 degrees Fahrenheit.
Temperature variations between night and day tend to be moderate during summer with a difference that can reach 28 degrees Fahrenheit, and moderate during winter with an average difference of 24 degrees Fahrenheit.
The annual average precipitation at Altadena is 9.99 Inches. Winter months tend to be wetter than summer months. The wettest month of the year is February with an average rainfall of 4.99 Inches.