DON MARTIN, COAHUILA

Average Temperature

Years on Record: 53

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		21		11		14		18		23		26		29		30		29		26		22		16		12

Average High Temperature

Years on Record: 16

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		28.6		18.8		21.8		26.1		30.4		33		35.6		36.4		36		33.1		28.8		23.7		19.8

Average Low Temperature

Years on Record: 29

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		14.6		5		6.9		10.7		15.1		19		21.7		22.5		22.4		20.4		15.7		9.9		5.7

Highest Recorded Temperature

Years on Record: 16

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		50		36		39.5		42		50		47		47.5		46.8		44.8		46		40.5		39.8		38

Lowest Recorded Temperature

Years on Record: 29

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		-10.5		-8		-5		-3		0.4		0.4		0.4		2.4		2.5		0.2		0.3		-8		-10.5

Average Precipitation

Years on Record: 46

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		403		17		17		11		31		58		44		23		50		78		46		15		13

Average Number of Days With Hail

Years on Record: 60

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

Most Reported Precipitation in a Month

Years on Record: 10

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		288		74		251		108		158		192		286		133		191		288		229		83		65

Most Precipitation Reported in a Day

Years on Record: 10

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		159		34		95		90		86		87.5		104		119		84.5		159		88.5		24		37

Average Number of Rainy Days

Years on Record: 35

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		37.6		3.3		2.9		2.3		2.9		4.1		3		2.6		3.1		4.5		3.3		2.7		2.9

Average Number of Days With Thunderstorms

Years on Record: 60

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		7.4		0.1		0.1		0.2		0.6		1.2		1.2		0.8		1.2		1.1		0.6		0.1		0.2

Heating Degree Days

Years on Record: 16

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		670.2		199.8		113		---		---		---		---		---		---		---		---		45.8		173.1

Cooling Degree Days

Years on Record: 16

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		1737.8		---		---		2.6		132.5		237.7		310		344.4		336.7		252.5		121.4		---		---

Growing Degree Days

Years on Record: 16

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		4318.3		58.6		122.4		260.9		382.5		496		560		602.8		595.1		502.5		379.8		204.2		85.3

Average Length of Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		12.6		11.1		11.7		12.4		13.3		14		14.3		14.1		13.5		12.7		11.9		11.2		10.9

Average Number of Days With Fog

Years on Record: 21

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		12.5		2.8		2.1		1.1		0.5		0.3		0.1		---		---		0.3		1		2		2.3

Average Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		17.5		11.7		14.1		18.3		20.2		21.5		22.8		23.3		21.4		18.4		15.3		12.6		11.1

Average Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		6.2		4		5		6		7.4		8.3		8.5		8.1		7.5		6.6		5.3		4.2		3.6

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		18.4		15.1		17.1		20.1		19.8		19.7		20.2		20.9		20.4		19.2		17.9		15.9		14.9

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		18.7		16.2		16.9		20.2		19.3		19.1		20.8		22.1		20.4		18.6		17.6		17.1		16.3

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		11.7		14.1		18.3		20.2		21.5		22.8		23.3		21.4		18.4		15.3		12.6		11.1

Maximum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		6.7		4.4		5.5		6.8		8		8.7		9		8.7		8.1		7.1		5.8		4.6		4.1

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		19.6		22		23.2		25.6		22.1		22.7		22.9		21.8		22.1		22.6		20.2		19.1

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		25.2		23.7		24.8		25.7		30.9		24.2		26.6		26.7		23.2		23.8		25.5		24.4		23.3

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		14.7		9.7		11.4		14.7		16.7		19.3		19.9		20.6		18.4		15.4		11.2		10.6		8

Minimum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		5.3		3.2		4		5.2		5.4		7.6		7.6		7.3		7.1		5.9		4.2		3.3		2.9

Minimum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		15		11.9		13.1		15.6		16.2		17.8		17.9		18.6		17.5		15.8		12.3		12.7		9.8

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		12.9		11.2		11		13		13.1		15.5		15.8		17.3		15.1		13.1		9.5		12.1		8.6