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Castle Rock, CO Weather


Castle Rock, CO climate is mild during summer when temperatures tend to be in the 60's and very cold during winter when temperatures tend to be in the 30's.

The warmest month of the year is July with an average maximum temperature of 84.00 degrees Fahrenheit, while the coldest month of the year is January with an average minimum temperature of 13.60 degrees Fahrenheit.

Temperature variations between night and day tend to be relatively big during summer with a difference that can reach 31 degrees Fahrenheit, and relatively big during winter with an average difference of 30 degrees Fahrenheit.

The annual average precipitation at Castle Rock is 17.34 Inches. Rainfall in is fairly evenly distributed throughout the year. The wettest month of the year is May with an average rainfall of 2.42 Inches.

Weather Data

Normal Climate

Normal Temperatures

(CASTLE ROCK Weather station, 1.37 miles from Castle Rock)
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Max °F 43.9 46.6 51.9 58.3 67.4 78.2 84.0 81.9 74.4 65.0 51.2 45.0 62.3
Mean °F 28.8 32.0 37.7 44.3 53.5 62.9 68.6 66.7 58.7 48.4 36.2 29.9 47.3
Min °F 13.6 17.4 23.4 30.2 39.5 47.6 53.1 51.4 43.0 31.8 21.2 14.8 32.3

Normal Precipitation

(CASTLE ROCK Weather station, 1.37 miles from Castle Rock)
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Inch 0.55 0.53 1.50 1.87 2.42 1.92 2.37 2.16 1.24 1.09 0.98 0.71 17.34