DALLAS - MOUNTAIN CREEK LAKE, TEXAS

Average Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		18.8		8.2		10.1		14.1		18.3		22.9		26.7		28.9		29.2		25.1		19.5		13.7		8.6

Average High Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		24.6		13.8		15.7		19.9		24.1		28.3		32.2		34.8		35.3		31.1		25.6		19.3		14

Average Low Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		13.1		2.6		4.5		8.3		12.4		17.6		21.1		23.1		23.1		19.1		13.4		8.1		3.2

Average Number of Days Above 100F/38C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		11.1		---		---		---		---		---		0.6		4.3		5.5		0.8		---		---		---

Average Number of Days Above 90F/32C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		84.7		---		---		---		0.2		3.2		15.8		25.8		26.9		11.8		1		---		---

Average Number of Days Above 80F/26C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		166.6		0.1		0.9		3.3		7.7		21.1		29.1		30.7		30.5		25.8		14.1		3		0.3

Average Number of Days Above 70F/21C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		242.8		4.1		6.6		14.2		24.1		30.3		30		31		31		29.8		25.3		12.4		4.1

Average Number of Days Above 60F/15C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		299.1		13.5		15.2		23.7		28.7		31		30		31		31		30		30.3		21.8		12.8

Average Number of Days Above 50F/10C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		339		21.8		22.6		29.5		29.9		31		30		31		31		30		31		28.2		23

Average Number of Days Above 40F/4C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		358.7		28		26.3		31		30		31		30		31		31		30		31		29.8		29.5

Average Number of Days Below 70F/21C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		280.3		31		28		31		29.7		25.6		13.9		4.8		5.3		20.5		29.6		30		31

Average Number of Days Below 60F/15C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		200		30.5		27.1		27.7		21.8		8.3		0.6		---		0.1		5.4		20.4		27.8		30.2

Average Number of Days Below 50F/10C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		135.9		27.9		23.7		19.6		9		0.9		---		---		---		0.7		7.6		19.4		27.3

Average Number of Days Below 40F/4C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		71.9		20.7		15		7.4		1.1		---		---		---		---		---		0.6		7.4		19.7

Average Number of Days Below 32F/0C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		27.9		9.9		6		1.8		---		---		---		---		---		---		---		1.5		8.7

Average Number of Days Below 20F/-6C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		1.6		0.9		0.2		0.1		---		---		---		---		---		---		---		---		0.4

Average Number of Days Below 10F/-12C

Years on Record: 30

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

Average Precipitation

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		1031.2		66		71.1		91.4		86.4		119.4		104.1		63.5		91.4		73.7		114.3		76.2		73.7

Average Number of Days With Precipitation

Years on Record: 25

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		47		3		4		4		6		6		4		3		3		3		3		4		4

Most Reported Precipitation in a Month

Years on Record: 25

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		368		178		152		230		299		368		364		165		135		191		224		206		162

Least Reported Precipitation in a Month

Years on Record: 25

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		---		---		2		---		17		43		---		---		---		---		---		---		---

Most Precipitation Reported in a Day

Years on Record: 25

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		154.9		101.6		57.1		117.6		121.9		154.9		76.2		120.7		71.1		86.4		114.3		76.2		76.2

Avg. No. of Days w/Precip. Above 0.2in/5mm

Years on Record: 25

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		47		3		4		4		6		6		4		3		3		3		3		4		4

Avg. # of Days w/Precip. Above 0.4in/10mm

Years on Record: 25

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		25		1		2		2		4		3		2		2		1		2		2		2		2

Avg. No. of Days w/Precip. Above 1in/25mm

Years on Record: 25

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		12		---		---		1		2		2		1		1		1		1		1		1		1

Average Precipitable Water

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm.		2.6		1.4		1.5		1.7		2.1		3		3.7		4.1		4.1		3.5		2.5		1.8		1.4

Average Snowfall

Years on Record: 25

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		0.8		0.8		---		---		---		---		---		---		---		---		---		---		---

Most Snow Reported in a Month

Years on Record: 25

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		5.8		5.8		---		---		---		---		---		---		---		---		---		---		---

Average Relative Humidity

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		65		64.2		64.3		64.2		64.7		69.1		68.1		62.6		60.7		64.2		66.6		67.6		64.1

Heating Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		2247		568		421		263		89		8		---		---		---		5		71		276		546

Cooling Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		2571		2		6		28		86		265		450		592		606		369		136		26		4

Growing Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		6327		79		112		264		450		722		900		1057		1070		814		531		239		88

Average Length of Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		12.6		10.7		11.5		12.4		13.5		14.3		14.7		14.5		13.7		12.7		11.8		10.9		10.5

Average Total Sky Cover

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		40.9		48.2		49.1		48.9		45.1		50.9		39.8		26.2		27.3		31.1		38.3		43.2		43.1

Average Opaque Sky Cover

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		37.5		45.4		45.2		45.3		41.4		45.4		34		22.6		23.1		28.4		36.1		40.5		40.4

Average Wind Speed

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
km/h		14.7		15.5		15.8		17.5		17.4		15.8		14.5		13.6		11.8		11.9		13		14.4		15.3

Average Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		16.3		9.6		12.2		15.8		19.3		20.6		22.8		23.8		20.7		18.1		14		10.4		8.8

Average Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		5.9		3.6		4.5		5.9		7.2		8.4		8.5		7.9		7.4		6.1		4.8		3.7		3.2

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		17.5		13.5		15.7		17.7		19.1		18.9		20		21.2		19.9		19.4		17.5		14.2		12.9

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		17.9		14.1		15.5		17		18.8		18.1		21.1		23.5		20.3		19.8		17.7		14.9		13.7

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		16.3		9.6		12.2		15.8		19.3		20.6		22.8		23.8		20.7		18.1		14		10.4		8.8

Maximum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		6.4		3.8		4.9		6.3		7.7		8.8		9.1		8.5		8		6.7		5.3		4.1		3.5

Maximum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		21.2		17.5		20.7		22.6		23.2		21.4		22.4		22.8		22.4		21.9		22.5		20.2		16.5

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		24.3		20.4		23.2		25.3		26.5		23.4		26.7		27.2		25.4		24.1		25.7		24.5		19.2

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		13.4		7.5		9.4		12.4		15.9		18.1		17.9		21.7		17.9		15.7		10.3		7.6		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		5.2		3		3.7		4.9		6.1		7.7		7.7		7.3		6.6		5.5		3.7		2.7		2.8

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		9.8		11.2		13.4		15.7		16.7		16		19.4		17.2		16.6		11.9		9.5		9.4

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		8.8		9.1		10.5		12.8		14		12.9		19.6		15.1		14.9		9.5		8.1		8.5