ALFREDO M. TERRAZAS, SAN LUIS POTOSI

Average Temperature

Years on Record: 60

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		24		17.9		19.5		23		26.2		28.2		28.5		27.5		27.6		26.3		24.1		21.1		18.6

Average High Temperature

Years on Record: 60

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		29.6		23.1		25.5		29.4		32.9		34.3		34.2		32.8		33.2		31.1		28.9		26		23.6

Average Low Temperature

Years on Record: 14

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		18.5		12.7		13.5		16.5		19.6		22.1		22.8		22.1		22.1		21.5		19.2		16.3		13.7

Highest Recorded Temperature

Years on Record: 60

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		47.5		37.5		41		43		47.5		47		47		41.5		41		39		36.5		35		35

Lowest Recorded Temperature

Years on Record: 14

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		-2		---		1		3		8		10.5		17		17		17		12.5		7		4.5		-2

Average Precipitation

Years on Record: 60

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		2168		65		61		66		94		176		276		289		285		445		233		111		68

Average Number of Days With Hail

Years on Record: 60

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		0.6		---		0.1		0.2		0.1		0.1		---		0.1		---		---		---		---		---

Most Reported Precipitation in a Month

Years on Record: 60

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		1028		171		148		182		229		542		743		899		655		1028		681		456		216

Most Precipitation Reported in a Day

Years on Record: 60

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		411.4		124.5		71.4		93.6		158.7		268.4		356.5		320		411.4		392.7		209.5		195		82.4

Average Number of Rainy Days

Years on Record: 28

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		132		10		8.3		8.3		8		9.8		12.5		14.9		13.5		15.5		11.9		9.7		9.6

Average Number of Days With Thunderstorms

Years on Record: 32

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		121.4		9.8		7.7		7.1		6.7		8.5		10.9		13.4		14.3		12.2		10.1		9.6		11.1

Heating Degree Days

Years on Record: 60

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		12.9		12.9		---		---		---		---		---		---		---		---		---		---		---

Cooling Degree Days

Years on Record: 60

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		2115.1		---		32.9		142.9		237.5		305.7		305		282.4		289.3		239.2		177.4		84.2		10.3

Growing Degree Days

Years on Record: 60

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		5352.9		245.4		268.4		401.3		487.5		564.1		555		540.8		547.7		489.2		435.7		334.2		268.7

Average Length of Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		12.5		11.4		11.8		12.4		13		13.6		13.8		13.7		13.2		12.6		12		11.5		11.3

Average Number of Days With Fog

Years on Record: 24

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		162		14		12.2		12.8		11.5		14.1		14.1		15.5		14.5		13.7		13.2		12.7		13.7

Average Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		17.5		12.7		15.6		18.4		20.4		21.9		21.1		19.9		20.5		16.9		15.8		14.2		12.2

Average Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		6.9		5		5.8		6.8		7.8		8.2		8.5		8.6		8		7.5		6.2		5.2		4.8

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		18		15.1		17.4		19.2		19.8		20.2		20.9		19.5		19.4		17		17.2		16.7		14.3

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		16.6		14.5		16.4		17.9		18.4		19.6		18.1		16.2		18.1		14		15.6		16.6		14.5

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		17.5		12.7		15.6		18.4		20.4		21.9		21.1		19.9		20.5		16.9		15.8		14.2		12.2

Maximum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		7.2		5.3		6.2		7.3		8.2		8.7		8.9		8.9		8.4		7.6		6.5		5.5		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		21.4		19.3		22.6		22.3		22.7		22.6		23.4		22.9		21.4		19.4		20.9		20.3		18.1

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		22.3		21.2		25.3		23.2		23.8		24.6		22.4		21.9		21.9		18.1		21.8		22.5		21.2

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		8.1		13.2		15		17.5		19.3		16.5		16.3		17.3		11.1		12.3		12.3		9.7

Minimum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		6.2		4.4		4.6		6.1		7		7.5		8		8		7.5		7.1		5.5		4.4		4.1

Minimum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		14.3		8.9		14.4		15.4		17		18		16.2		15.9		16.4		10.9		13.1		14.1		10.8

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		10.8		5.8		11.8		11.8		13.5		15.2		10.9		10.6		12.8		5.9		9.5		12.5		9.1