DUCHESNE - AIRPORT, UTAH

Average Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		7.9		-6.8		-3.7		3.4		8.4		13.2		18.2		21.4		20.5		15.7		9.3		1		-5.1

Average High Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		16		-0.3		3.2		10.9		16.9		22.1		27.7		30.7		29.6		24.7		17.5		7.6		1.3

Average Low Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		-0.1		-13.4		-10.7		-4.2		---		4.2		8.6		12.1		11.4		6.7		1		-5.6		-11.4

Highest Recorded Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		32.4		6.2		9.4		16.1		21.2		25.4		30.9		32.4		31.4		28.6		22.1		12.2		6.8

Lowest Recorded Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		-21.5		-21.5		-18.5		-8.4		-3.3		1.1		6.7		9.8		9.1		4.3		-1.1		-8.7		-16.3

Average Number of Days Above 90F/32C

Years on Record: 7

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		26.5		---		---		---		---		---		6		12.7		7		0.9		---		---		---

Average Number of Days Below 32F/0C

Years on Record: 7

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		176		30.2		27.3		28.5		17.3		4.6		0.2		---		---		1.1		11.5		25.8		29.5

Average Number of Days Below 0F/-17C

Years on Record: 7

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		16.7		7.7		3.2		0.3		---		---		---		---		---		---		---		1		4.5

Average Precipitation

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		247		13		14		18		23		28		17		25		30		28		24		12		14

Average Number of Days With Precipitation

Years on Record: 7

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		49		5		3		5		4		7		2		5		6		4		3		3		2

Most Reported Precipitation in a Month

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		117		45		37		48		78		82		55		65		117		99		89		45		65

Least Reported Precipitation in a Month

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		---		3		---		---		4		4		---		1		2		---		---		---		1

Most Precipitation Reported in a Day

Years on Record: 7

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		29.2		11.9		11.2		16.5		10.2		26.9		16.5		12.7		18.8		29.2		22.4		17.5		7.1

Avg. No. of Days w/Precip. Above 0.2in/5mm

Years on Record: 7

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		26		3		2		2		2		3		1		3		3		2		2		2		1

Avg. # of Days w/Precip. Above 0.4in/10mm

Years on Record: 7

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		3		---		---		---		---		---		---		---		1		---		1		1		---

Average Snowfall

Years on Record: 7

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		45.7		16.3		11.7		10.2		0.2		---		---		---		---		---		---		5.8		1.5

Most Snow Reported in a Month

Years on Record: 7

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		33		33		22.9		25.4		1.3		---		---		---		---		---		---		18.8		4.8

Heating Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		4002.8		780.6		617.2		463.9		297.8		164.4		52.8		2.8		8.3		87.8		281.7		520		725.6

Cooling Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		233.3		---		---		---		---		3.3		47.8		98.3		74.4		9.4		---		---		---

Growing Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		1195.2		---		---		---		---		98.2		245		354.8		325.5		171.7		---		---		---

Average Length of Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		12.7		10.2		11.2		12.5		13.8		15		15.5		15.2		14.2		12.9		11.6		10.4		9.9

Average Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		16.4		8.5		11.5		16.2		19.9		23		25.1		23.8		20.7		17.9		13.6		9.2		7.7

Average Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		5		2.5		3.5		4.8		6.4		7.6		7.8		7.7		6.9		5.1		3.6		2.7		2.1

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		19.1		15.7		17.2		20.1		20.5		21		21.7		21.1		20.3		20.6		19.4		15.8		15.6

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		21.4		17		18.5		21.8		22.4		24		26.5		24.8		22.2		22.9		21.5		17.5		17.1

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		16.4		8.5		11.5		16.2		19.9		23		25.1		23.8		20.7		17.9		13.6		9.2		7.7

Maximum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		5.6		2.8		4		5.3		7		8.3		8.6		8.2		7.3		5.8		4.4		3		2.5

Maximum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		22		18.3		21		22.9		23.9		22.5		24.1		22.9		22.4		23		26.1		19.5		17.9

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		26.6		20.7		24.2		26.5		28.9		27.4		32.5		29.1		26.7		27.2		32.1		23.3		20.4

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		14.4		6.8		9.3		14.5		17.6		20.1		22.2		22.2		18.9		15.4		10.9		8.1		6.4

Minimum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		4.3		2.1		2.8		4.1		5.4		7.1		6.7		7.1		6.2		4.5		2		2.1		1.8

Minimum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		16.1		11.5		13.1		17.9		17.9		18.4		19.4		19.7		18.5		17.2		14.5		13.2		11.8

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		16.3		11.2		12.4		17.6		17.6		18.4		20.9		21.6		18.7		17.2		14.2		13.6		12.1