NORIA EL TEJ?N, ZACATECAS

Average Temperature

Years on Record: 16

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		16.4		11		12.8		14.8		17.4		20.6		21.2		20.1		19.8		18.7		15.9		13.5		11.5

Average High Temperature

Years on Record: 60

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		26.5		21.5		23.6		26.1		29.1		31.6		31		28.8		28.5		27		25.4		23.8		21.2

Average Low Temperature

Years on Record: 48

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		6.4		0.4		1.9		3.5		5.8		9.7		11.3		11.2		11		10.3		6.3		3.2		1.8

Highest Recorded Temperature

Years on Record: 60

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		39		28		31		34		37		38		39		36		37		39		32		30		28

Lowest Recorded Temperature

Years on Record: 48

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		-11		-11		-7		-6		-4		---		4		4		5		3		-5		-7		-9

Average Precipitation

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		344		10		6		3		5		16		49		72		81		58		22		9		12

Average Number of Days With Hail

Years on Record: 34

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		1.1		0.1		0.1		---		0.2		0.3		0.1		---		0.1		0.2		---		---		---

Most Reported Precipitation in a Month

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		379		72		33		15		45		94		135		379		175		147		108		40		47

Most Precipitation Reported in a Day

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		69		30		32.5		15		14.5		32.1		60.2		65.3		69		52		46		20.2		19.8

Average Number of Rainy Days

Years on Record: 29

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		41.6		1.2		0.9		0.7		1.1		2.4		5.3		7.4		9		6.9		3.3		1.4		2

Average Number of Days With Thunderstorms

Years on Record: 60

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		7.3		0.9		0.6		0.5		0.5		0.3		0.2		0.1		0.1		0.3		0.8		1.3		1.7

Heating Degree Days

Years on Record: 60

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		1126.7		229.1		157.7		109.4		26.7		---		---		---		---		---		77.5		145		211.8

Cooling Degree Days

Years on Record: 60

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		261.3		---		---		---		---		72.3		84.2		51.7		43.9		9.2		---		---		---

Growing Degree Days

Years on Record: 60

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		2385.2		29.3		77.7		149		223.3		330.7		334.2		310		302.3		259.2		180.8		105		46.5

Average Length of Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		12.5		11.3		11.8		12.4		13.1		13.7		14		13.8		13.3		12.6		12		11.4		11.1

Average Number of Days With Fog

Years on Record: 25

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		7		0.3		0.2		0.3		0.3		0.9		0.9		1.3		1		0.7		0.4		0.4		0.3

Average Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		20.2		15.2		18.4		22.4		23.5		24.6		24.1		22.9		22.1		19.6		18.5		16.9		14.6

Average Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		5.8		3.8		4.4		5.1		6.7		7.5		8		8.1		7.5		6.8		5.1		3.6		3.5

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		21.3		19		21.9		24.2		22.9		22.5		21.4		20.7		20.8		20.1		21.2		21.7		18.8

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		23.3		22.4		24.4		27.2		24.7		24.7		23.1		21.2		21.2		19.5		22.6		25.3		22.8

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		20.2		15.2		18.4		22.4		23.5		24.6		24.1		22.9		22.1		19.6		18.5		16.9		14.6

Maximum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		6.6		4.9		5.2		6.3		7.6		8.1		8.6		8.8		8		7.2		6		4.2		4.3

Maximum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		23.5		22.7		25.9		26.2		25.1		24.2		22.5		22.3		22.3		21.2		24.3		23.6		22.1

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		27.6		29.3		31.6		31		29.3		28.7		25.6		24.9		24.1		21.6		28.3		28.6		28.8

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		17.8		11.4		16.3		19.4		20.8		22.5		21.9		19.7		20.4		17.9		15.6		15.4		12.1

Minimum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		5.1		2.7		3.1		4.3		5.8		6.7		7.6		7.5		7.1		6.4		4.1		3		2.5

Minimum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		18.4		13.4		19.1		20.7		20.2		20.7		19.7		18		19.3		18.3		17.4		19.4		14.9

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		18		12.8		19.5		20.7		19.4		20.7		19.1		15.8		18.1		16.4		16.2		21.3		15.8