ZACATECAS, ZACATECAS

Average Temperature

Years on Record: 19

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		57		50		52		56		59		63		62		59		59		58		57		54		51

Average High Temperature

Years on Record: 60

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		72		64.2		66.9		71.1		76.1		79.5		77.9		74.8		74.5		72.5		71.8		69.8		64.8

Average Low Temperature

Years on Record: 48

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		48.6		40.5		42.3		45.1		49.8		54		54.7		53.2		53.2		52.7		49.3		45		42.1

Highest Recorded Temperature

Years on Record: 60

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		96.8		82.4		84.2		85.8		93.2		96.8		96.8		87.8		85.8		86.9		86		84.2		82.4

Lowest Recorded Temperature

Years on Record: 48

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		12.2		20.7		25.7		26.4		35.6		43		33.8		39.2		43.7		38.3		35.6		25.7		12.2

Average Number of Days Above 80F/26C

Years on Record: 19

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

Average Number of Days Below 45F/7C

Years on Record: 19

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		60		15		12		8		2		---		---		---		---		---		3		7		12

Average Number of Days Below 32F/0C

Years on Record: 19

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

Average Precipitation

Years on Record: 40

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in.		8.9		0.2		0.1		0.1		0.2		0.5		1.9		1.8		2.6		2		1.1		0.2		0.5

Average Number of Days With Hail

Years on Record: 34

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		1.3		0.2		0.1		0.1		0.1		0.2		0.1		0.1		0.1		0.1		0.1		0.1		---

Most Reported Precipitation in a Month

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		13.2		6.3		2.2		3.2		2.5		1.8		8.1		13.2		10.2		8.3		3.9		2.1		1.9

Most Precipitation Reported in a Day

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		4.9		1.7		1.1		1.7		2		1.3		2.5		3		4.9		2.8		2.6		2		1

Average Number of Rainy Days

Years on Record: 29

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		56		2.3		1.6		1		1.2		3.4		8.6		10.1		10.1		9.6		4.6		1.3		2.2

Average Number of Days With Thunderstorms

Years on Record: 60

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		1.4		---		---		0.1		---		0.1		---		0.3		0.1		0.4		0.1		0.1		0.2

Most Rain Reported in a Month

Years on Record: 40

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in.		27.6		1.7		1.3		1.1		2.3		3.9		8.7		9.1		7		10.9		3.5		3.2		4.1

Least Recorded Rainfall

Years on Record: 40

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in.		2.8		---		---		---		---		---		---		---		0.4		---		---		---		---

Average Morning Relative Humidity

Years on Record: 14

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		70		66		60		52		51		57		76		87		85		88		76		67		69

Average Evening Relative Humidity

Years on Record: 15

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		53		56		48		38		35		37		53		68		49		70		59		52		57

Average Dew Point

Years on Record: 7

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		38		32		29		28		31		36		45		48		47		48		42		36		35

Heating Degree Days

Years on Record: 60

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		1824.2		392.2		293.8		213.9		61.5		---		---		31		35.7		72		138		228		358.1

Cooling Degree Days

Years on Record: 60

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		93.3		---		---		---		---		54.3		39		---		---		---		---		---		---

Growing Degree Days

Years on Record: 60

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		3748.3		72.9		130		251.1		388.5		519.3		489		434		429.4		378		327.1		222		107

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		13.9		13.8		13.3		12.6		12		11.4		11.2

Average Number of Days With Fog

Years on Record: 25

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		28.1		2		1.4		0.5		0.5		0.6		2.3		3.7		4.1		5.9		3.6		1.8		1.7

Average Wind Speed

Years on Record: 7

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mph		17		21		21		24		19		16		13		12		12		12		12		18		18

Average Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		5.8		4.5		5.4		6.6		7		7		6.7		6.3		6.1		5.5		5.4		4.9		4.3

Average Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.6		1		1.2		1.3		1.7		2		2.2		2.3		2.1		1.9		1.4		0.9		0.9

Average 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		5.5		6.4		7.1		6.8		6.4		6.6		5.7		5.8		5.6		6.1		6.3		5.4

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		6.8		6.7		7.4		8.2		7.7		7.2		6.4		5.7		5.9		5.4		6.7		7.5		6.7

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		5.8		4.5		5.4		6.6		7		7		6.7		6.3		6.1		5.5		5.4		4.9		4.3

Maximum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.8		1.4		1.4		1.7		2.1		2.2		2.4		2.5		2.3		2		1.6		1.1		1.2

Maximum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		6.9		6.7		7.6		7.7		7.9		6.9		7.2		6.3		6.2		6.2		7		7		6.2

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		8.3		8.9		9.6		9.4		10.2		8.3		7.7		7		6.6		6.5		8.3		8.8		8.1

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		5		3.4		4.8		5.6		5.9		6.5		6		5.1		5.4		4.8		4.6		4.6		3.5

Minimum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.3		0.6		0.7		1		1.1		1.8		2		2.1		2		1.7		1.1		0.7		0.7

Minimum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		5.2		4		5.6		6		5.7		6		5.9		4.7		5.1		4.9		5.1		5.8		4.3

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		5.1		3.9		5.8		6.1		5.5		6.2		5.2		3.8		4.5		4.2		4.9		6.5		4.6