ASPEN, COLORADO

Average Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		40.8		19.8		22.2		30.9		39.8		48.4		57.5		63.5		61.3		53.3		42.2		29.3		20

Average High Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		54.7		32.7		35		43		52.2		62.7		74.1		80.1		76.9		68.4		56.3		41.4		32

Average Low Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		26.9		6.9		9.5		18.9		27.5		34.1		40.9		46.9		45.7		38.2		28		17.2		8

Highest Recorded Temperature

Years on Record: 29

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		94		58		60		70		79		87		93		94		89		89		77		69		62

Lowest Recorded Temperature

Years on Record: 31

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		-37		-37		-30		-26		-10		14		15		31		29		15		-1		-19		-19

Average Number of Days Above 90F/32C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		0.4		---		---		---		---		---		0.2		0.2		---		---		---		---		---

Average Number of Days Above 80F/26C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		33.8		---		---		---		---		0.4		6.9		16.3		9.4		0.8		---		---		---

Average Number of Days Above 70F/21C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		102		---		---		---		0.3		6.2		21.8		29.5		27.6		14.9		1.7		---		---

Average Number of Days Above 60F/15C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		159.8		0.2		---		1		7.3		21.2		28.2		31		31		25.8		12.6		1.5		0.1

Average Number of Days Above 50F/10C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		208.2		0.6		0.5		7.6		18.8		27.4		29.8		31		31		29.2		23.5		8.5		0.5

Average Number of Days Above 40F/4C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		260		5		6.7		19.6		25.9		30.6		30		31		31		30		28.9		15.9		5.5

Average Number of Days Below 70F/21C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		365		31		28		31		30		31		30		31		31		30		31		30		31

Average Number of Days Below 60F/15C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		365		31		28		31		30		31		30		31		31		30		31		30		31

Average Number of Days Below 50F/10C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		352.4		31		28		31		30		31		29.1		24.2		26.5		29.5		31		30		31

Average Number of Days Below 40F/4C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		273		31		28		31		29.9		26.7		12.3		1.5		2.5		19		30		30		31

Average Number of Days Below 32F/0C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		212.5		30.8		28		30.3		24		10.3		1.3		---		---		4.1		23.5		29.3		30.9

Average Number of Days Below 20F/-6C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		120.2		28.3		24.2		15.5		3.6		0.2		---		---		---		0.2		3.5		16.9		27.7

Average Number of Days Below 10F/-12C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		61		19.3		13.9		4		0.4		---		---		---		---		---		0.2		5.8		17.4

Average Number of Days Below 0F/-17C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		19.8		7.4		3.9		1.1		---		---		---		---		---		---		---		1.6		5.8

Average Precipitation

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in.		17.3		1		1.2		1.3		1.8		1.5		1.1		1.7		1.7		1.8		1.5		1.4		1.1

Average Precipitable Water

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in.		0.3		0.2		0.2		0.2		0.2		0.3		0.4		0.5		0.6		0.4		0.3		0.2		0.2

Average Number of Rainy Days

Years on Record: 34

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		43		4.3		4.2		4.5		4.4		4.1		2.5		3.3		3.5		2.8		2.9		2.8		3.7

Average Snowfall

Years on Record: 29

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in.		134.2		27.2		25.2		24.3		11		2.5		0.5		---		---		0.9		4.5		17		21.1

Average Relative Humidity

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		53.7		62.9		60		54.1		50.1		46.9		42.8		47.4		52.3		50.6		52.3		59.7		64.5

Heating Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		8874		1401		1197		1056		755		515		229		71		125		351		708		1071		1395

Cooling Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		39		---		---		---		---		---		4		25		10		---		---		---		---

Growing Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		1216		---		---		---		3		59		237		418		350		138		10		---		---

Average Length of Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		12.7		10.3		11.2		12.5		13.7		14.9		15.4		15.1		14.1		12.9		11.6		10.5		10

Average Total Sky Cover

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		54		61.5		64.2		59.6		62.3		55.1		42.9		45.4		51.8		45.6		47.3		55.7		56.9

Average Opaque Sky Cover

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		47.6		55.9		57.7		52.7		54.5		46.9		35.9		37.7		44.3		41		42.5		50.2		52.4

Average Wind Speed

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mph		6.3		5.2		5.6		6.4		7		7.2		7.2		6.9		6.6		6.7		6.3		5.3		5.1

Average Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		4.6		2.5		3.4		4.6		5.4		6.3		7.1		6.7		5.8		5		3.9		2.6		2.3

Average Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.4		0.7		1		1.4		1.9		2.1		2.1		2.1		1.9		1.5		1		0.8		0.6

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		5.4		4.6		5		5.7		5.5		5.8		6.2		5.9		5.6		5.7		5.5		4.4		4.4

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		6		5.1		5.5		6		5.8		6.5		7.7		6.9		6.1		6.3		6		4.8		4.9

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		4.6		2.5		3.4		4.6		5.4		6.3		7.1		6.7		5.8		5		3.9		2.6		2.3

Maximum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.6		0.8		1.1		1.5		2		2.4		2.4		2.3		2.1		1.7		1.3		0.9		0.7

Maximum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		6.1		5.1		5.6		6.5		6.2		6.3		6.9		6.7		6.5		6.3		6.8		5.5		5.1

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		7.4		5.8		6.4		7.4		7.2		7.6		9.5		8.8		7.9		7.4		8.1		6.5		5.9

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		4.1		2.3		3		4		4.8		5.3		6.2		6.2		5.1		4.4		3.1		2.3		2.1

Minimum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.2		0.6		0.8		1.2		1.7		2		1.8		1.8		1.7		1.3		0.7		0.6		0.5

Minimum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		4.6		4.1		4.2		4.8		4.8		4.9		5.4		5.5		5		4.9		4		3.6		3.8

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		4.6		4.3		4.3		4.7		4.5		4.6		5.8		6		4.8		4.9		3.9		3.6		4.1