WEBSTER, TEXAS

Average Temperature

Years on Record: 12

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		21		12		13		16		20		24		27		28		28		26		21		15		12

Average High Temperature

Years on Record: 12

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		26		18		18		21		25		29		32		33		33		31		27		21		18

Average Low Temperature

Years on Record: 12

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		16		7		8		11		15		20		22		23		23		21		16		10		7

Highest Recorded Temperature

Years on Record: 12

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		40		27		30		31		33		35		37		40		38		37		35		31		28

Lowest Recorded Temperature

Years on Record: 12

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		-9		-6		-9		---		4		7		15		20		18		13		2		-4		-8

Average Number of Days Above 90F/32C

Years on Record: 12

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		88		---		---		---		---		4		19		25		23		13		1		---		---

Average Number of Days Below 32F/0C

Years on Record: 12

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		8		3		1		---		---		---		---		---		---		---		---		---		2

Average Precipitation

Years on Record: 12

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		1140		60		110		50		90		80		100		120		100		120		80		80		90

Average Precipitable Water

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm.		3		1.9		2		2.1		2.4		3.2		4.1		4.5		4.6		4.1		3		2.4		2

Average Number of Rainy Days

Years on Record: 12

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		58		4		5		2		5		4		3		5		6		5		4		4		5

Average Snowfall

Years on Record: 12

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

Average Dew Point

Years on Record: 12

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		15		8		9		11		15		19		22		23		23		21		16		10		8

Heating Degree Days

Years on Record: 12

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		718.7		163.6		125.6		51.7		---		---		---		---		---		---		---		83.3		163.6

Cooling Degree Days

Years on Record: 12

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		1513.6		---		---		---		58.3		198.1		275		318.6		318.6		241.7		103.3		---		---

Growing Degree Days

Years on Record: 12

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		4045.4		94.7		109.9		206.7		308.3		456.4		525		576.9		576.9		491.7		361.7		166.7		94.7

Average Length of Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		12.6		10.9		11.6		12.4		13.3		14.1		14.5		14.3		13.6		12.7		11.8		11.1		10.7

Average Total Sky Cover

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		63.1		66.9		67.8		66		68.1		68.5		64.8		60		60.9		56.9		52.9		59.5		64.8

Average Opaque Sky Cover

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		55.3		62.6		63		60.8		62.3		61.2		52.8		47.2		46.8		47.4		46.5		54.6		60

Average Wind Speed

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
km/h		11.6		13.5		13.5		13.3		13.8		12.5		11.4		9.3		8.5		8.9		10.2		11.6		12.6

Average Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		15.8		9.5		11.6		15.1		18.8		20.2		21.1		21.5		20.1		17.6		14.5		10.8		9.1

Average Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		6.4		4.1		5.1		6.4		7.6		8.5		8.8		8.5		7.7		6.6		5.2		4.2		3.7

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		16.6		12.3		13.9		16.4		18.4		18.6		18.7		19.3		19.3		18.5		17.2		13.9		12.3

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		15.8		12.1		12.5		14.5		17		17.2		17.9		19		18.5		17.6		17		14.1		12.4

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		15.8		9.5		11.6		15.1		18.8		20.2		21.1		21.5		20.1		17.6		14.5		10.8		9.1

Maximum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		6.6		4.2		5.2		6.6		7.9		8.8		9.1		8.8		8.2		7		5.6		4.4		3.8

Maximum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		20.3		15.6		17.9		21.3		23.7		21.3		21		21.5		21.8		21.8		21.6		20.1		16.1

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		17.1		18.4		22.6		27.2		22.8		22.7		23.8		23.6		23.5		23.9		24.2		18.3

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		12.8		7.7		8.8		12.3		15.2		16.5		17.2		19.8		17.3		14.8		10.2		7		6.9

Minimum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		5.6		3.7		4.7		5.5		6.1		7.9		8.3		7.8		7		5.8		4.4		3.1		3.3

Minimum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		13		9.3		9.9		13		14.7		15.3		15.5		17.9		16.6		15.3		11.4		8		8.6

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		10.2		7.8		7		9.5		11.1		11.4		11.8		16.2		13.7		12.5		8.5		5.8		7.2