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

Current Conditions

(Updated: 8:53 AM MST MON NOV 23 2009)

Partly Cloudy, 31°F	Humidity: 79%	Dewpoint: 25°F
	Wind Speed: NE 5.8 MPH (5 KT)	Heat Index: 31°F
	Barometer: 30.01 in.	Wind Chill: 25°F

Weather Forecast

(Generated: 3:54 AM MST MON NOV 23 2009)

	Hi: 39°F	Today: Mostly cloudy. Chance of snow showers in the morning... Then a slight chance of snow showers in the afternoon. Highs in the upper 30s. North winds 10 to 20 mph. Chance of snow 40 percent.
	Lo: 20°F
	Hi: 45°F	Tuesday: Sunny. Highs in the mid 40s.
	Lo: 21°F
	Hi: 45°F	Wednesday: Mostly sunny. Highs in the mid 40s.
	Lo: 30°F
	Hi: 51°F	Thanksgiving day: Mostly clear. Highs in the lower 50s. Lows around 30.
	Lo: 28°F
	Hi: 54°F	Friday: Mostly clear. Highs 50 to 56. Lows 24 to 30.
	Lo: 21°F
	Hi: 45°F	Saturday: Partly cloudy. Highs in the mid 40s. Lows in the lower 20s.
	Lo: 21°F

Moon, Sunrise and Sunset

	Moon Phase: First Quarter Moon	Civil Twilight: 6:22 AM MST	Sunrise: 6:51 AM MST
		Sunset: 4:39 PM MST	Civil Twilight: 5:08 PM MST

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