CLAYTON, OKLAHOMA

Average Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		14.7		0.9		4.1		9.3		14.4		19.3		24.2		27.2		26.6		22.2		15.7		8.8		3.3

Average High Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		21.2		7.2		10.9		16		21.3		25.4		30.1		33.6		33.4		28.7		22.9		15.3		9.5

Average Low Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		8.1		-5.4		-2.7		2.5		7.6		13.1		18.3		20.8		19.7		15.6		8.5		2.3		-2.9

Highest Recorded Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		38.4		13.8		17.4		18.5		25.2		28.1		32.4		38.4		37.9		32.7		25.8		21.3		12.8

Lowest Recorded Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		-11.6		-11.6		-9.2		-1.2		4.7		10		15.7		18.6		16.8		12.2		4.8		-2.9		-10.4

Average Number of Days Above 90F/32C

Years on Record: 23

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		78.3		---		---		---		0.3		0.8		13.7		24.1		24.1		13.1		2.1		---		---

Average Number of Days Below 32F/0C

Years on Record: 23

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		68.9		18.7		13.9		7.9		1.3		---		---		---		---		---		0.8		8.9		17.3

Average Number of Days Below 0F/-17C

Years on Record: 23

		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		1117		45		55		96		104		137		123		91		77		124		96		103		66

Average Number of Days With Precipitation

Years on Record: 23

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		73		6		6		7		9		8		6		6		5		5		5		5		5

Most Reported Precipitation in a Month

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		306		101		159		257		244		306		259		269		232		285		199		223		182

Least Reported Precipitation in a Month

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		---		---		11		5		4		30		25		---		---		16		12		---		5

Most Precipitation Reported in a Day

Years on Record: 23

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		203.2		99.8		81.3		86.4		120.7		130.1		72.4		143.5		130.6		203.2		106.7		102.9		70.9

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

Years on Record: 23

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		59		4		5		5		7		7		5		5		4		5		4		4		4

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

Years on Record: 23

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		32		2		2		3		4		4		3		3		2		3		2		2		2

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

Years on Record: 23

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		16		1		1		1		2		2		1		2		1		2		1		1		1

Average Snowfall

Years on Record: 23

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		2.5		1.3		0.5		---		---		---		---		---		---		---		---		---		0.8

Most Snow Reported in a Month

Years on Record: 23

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		10.2		10.2		10.2		---		---		---		---		---		---		---		---		---		7.6

Heating Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		2267.8		539.4		398.9		282.2		128.9		39.4		1.7		---		1.1		20		100.6		288.3		467.2

Cooling Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		945		---		---		---		11.7		68.3		178.3		275		255.6		134.4		19.4		2.2		---

Growing Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		2437.1		---		---		---		133.3		287.6		426.7		533.9		513.2		365		177.4		---		---

Average Length of Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		12.6		10.6		11.4		12.4		13.5		14.5		14.9		14.7		13.8		12.8		11.7		10.8		10.3

Average Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		15.6		8.7		11.2		14.8		18.6		20.2		21.8		23.1		20.5		17.3		13.4		9.3		7.9

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		3.4		4.4		5.9		7.2		8.4		8.6		8		7.3		6		4.6		3.6		3.1

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		16.8		12.7		14.2		16.7		18.6		18.5		19.1		20.6		19.8		18.8		17.1		13.1		12.1

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		13.1		14.3		15.8		18.1		17.8		19.6		22.5		20.3		18.9		17.4		13.5		12.6

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		15.6		8.7		11.2		14.8		18.6		20.2		21.8		23.1		20.5		17.3		13.4		9.3		7.9

Maximum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		6.2		3.5		4.6		6.1		7.6		8.7		9.1		8.7		7.7		6.6		5.1		3.8		3.2

Maximum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		20.8		16.6		18.8		22		23.5		21.5		22.1		22.2		23.4		22.9		21.8		18.9		15.4

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		18.9		21.6		24.5		27.4		24		26.3		26.3		28		26.4		24.8		22.3		17.5

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		12.6		6.9		8.2		12.6		15.2		16.6		17.1		20.2		18.7		13.8		10.1		6.3		5.9

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		2.9		3.7		4.8		5.8		7.7		7.8		7.5		6.1		4.9		3.7		2.8		2.7

Minimum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		13.1		9.2		9.6		13.9		15.1		15.3		15.3		18.1		18		14.5		12		7.8		8.2

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		11.1		8.3		7.6		11.5		12		11.9		11.8		17.3		16.9		12.1		9.9		6.1		7.2