Thornton, CO Weather

Thornton, CO climate is warm during summer when temperatures tend to be in the 70'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 87.90 degrees Fahrenheit, while the coldest month of the year is January with an average minimum temperature of 16.20 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 moderate during winter with an average difference of 28 degrees Fahrenheit.

The annual average precipitation at Thornton is 13.25 Inches. Rainfall in is fairly evenly distributed throughout the year. The wettest month of the year is May with an average rainfall of 2.25 Inches.

Weather Data

Current Conditions

(Updated: 8:48 AM MST MON NOV 23 2009)

Mostly Cloudy, 36°F	Humidity: 65%	Dewpoint: 25°F
	Wind Speed: NE 6.9 MPH (6 KT)	Heat Index: 36°F
	Barometer: 30.02 in.	Wind Chill: 30°F

Weather Forecast

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

	Hi: 40°F	Today: Mostly cloudy. Chance of snow showers in the morning... Then a slight chance of snow showers in the afternoon. Highs around 40. Northwest winds 10 to 20 mph. Chance of snow 40 percent.
	Lo: 21°F
	Hi: 45°F	Tuesday: Sunny. Highs in the mid 40s.
	Lo: 24°F
	Hi: 48°F	Wednesday: Mostly sunny. Highs 44 to 50.
	Lo: 31°F
	Hi: 55°F	Thanksgiving day: Mostly clear. Highs in the mid 50s. Lows 27 to 33.
	Lo: 27°F
	Hi: 56°F	Friday: Mostly clear. Highs 52 to 58. Lows 23 to 29.
	Lo: 23°F
	Hi: 49°F	Saturday: Partly cloudy. Highs in the upper 40s. Lows 19 to 25.
	Lo: 23°F

Moon, Sunrise and Sunset

	Moon Phase: First Quarter Moon	Civil Twilight: 6:23 AM MST	Sunrise: 6:53 AM MST
		Sunset: 4:38 PM MST	Civil Twilight: 5:08 PM MST

Normal Climate

Normal Temperatures

(NORTHGLENN Weather station, 3.39 miles from Thornton)

Month	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Annual
Max °F	43.8	47.8	54.4	61.2	71.3	82.0	87.9	85.8	77.5	66.2	51.6	44.7	64.5
Mean °F	30.0	33.8	40.2	47.0	56.6	66.3	72.0	70.3	62.1	51.0	38.2	31.3	49.9
Min °F	16.2	19.8	26.0	32.7	41.8	50.6	56.0	54.8	46.7	35.7	24.7	17.9	35.2

Normal Precipitation