Castle Rock, CO has mild temperatures throughout the year with hot summers and cool winters. The average temperature in the summer is around 85 degrees Fahrenheit and the average winter temperature is around 28 degrees Fahrenheit. Precipitation is fairly common throughout the year, with about 15 inches of rain and nearly 50 inches of snow in an average year. It is classified as a semi-arid climate due to its low amount of rainfall compared to other climates. Summers tend to be dry and sunny while winters can be quite cold with frequent snowfall, however both seasons provide breathtaking views of the Rocky Mountains.
Castle Rock, Colorado gets 19 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Castle Rock averages 78 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 243 sunny days per year in Castle Rock. The US average is 205 sunny days.
Castle Rock gets some kind of precipitation, on average, 70 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 86 degrees
Winter Low: the January low is 19
Rain: averages 19 inches of rain a year
Snow: averages 78 inches of snow a year