BUTLER, OKLAHOMA

Average Temperature

Years on Record: 86

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		15.1		2.1		5		9		14.9		19.7		25		27.9		26.9		22.4		15.9		8.5		3.4

Average High Temperature

Years on Record: 86

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		22.7		9.6		12.8		17.2		22.9		27.1		32.2		35.5		34.6		30		23.9		16.2		10.8

Average Low Temperature

Years on Record: 86

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		7.4		-5.4		-2.8		0.9		6.9		12.3		17.8		20.2		19.3		14.8		7.9		0.8		-4.1

Highest Recorded Temperature

Years on Record: 86

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		46.1		29.4		32.8		36.1		38.3		41.7		46.1		43.9		46.1		42.2		37.8		33.3		30

Lowest Recorded Temperature

Years on Record: 86

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		-27.8		-27.8		-26.7		-20.6		-8.3		-1.7		5.6		8.9		7.8		-1.7		-11.1		-15		-22.8

Average Number of Days Above 90F/32C

Years on Record: 86

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		87		---		---		0.3		1.5		5.5		16.6		25.8		23.7		11.8		1.8		---		---

Average Number of Days Below 32F/0C

Years on Record: 86

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		106.9		26.8		20.2		14.3		3		0.1		---		---		---		0.1		2.6		14.4		25.3

Average Number of Days Below 0F/-17C

Years on Record: 86

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		1.5		0.8		0.3		0.1		---		---		---		---		---		---		---		---		0.3

Average Precipitation

Years on Record: 86

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		662		21		23		45		61		104		90		52		70		73		61		38		24

Average Number of Days With Precipitation

Years on Record: 86

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		57		3		3		4		5		8		7		5		5		5		5		4		3

Most Reported Precipitation in a Month

Years on Record: 86

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		316		95		88		179		300		316		302		271		190		312		243		251		137

Least Reported Precipitation in a Month

Years on Record: 86

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		---		---		---		---		---		3		---		---		---		---		---		---		---

Most Precipitation Reported in a Day

Years on Record: 86

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		190.5		63.8		62.2		99.1		81.3		127		190.5		135.9		147.1		166.6		108		82		54.4

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

Years on Record: 86

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		42		2		2		3		4		6		5		4		4		4		4		2		2

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

Years on Record: 86

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		20		1		1		1		2		3		3		1		2		2		2		1		1

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

Years on Record: 86

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		7		---		---		---		1		1		1		1		1		1		1		---		---

Average Snowfall

Years on Record: 86

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		23.9		6.6		6.1		3.8		0.5		---		---		---		---		---		---		1.8		5.1

Most Snow Reported in a Month

Years on Record: 86

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		59.2		59.2		43.2		53.3		12.7		---		---		---		---		---		5.6		27.9		35.6

Heating Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		2425.6		537.8		403.3		307.2		155.6		47.2		5.6		---		0.6		22.8		118.3		327.8		499.4

Cooling Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		921.1		---		---		---		12.8		59.4		183.3		278.9		251.7		118.9		16.1		---		---

Growing Degree Days

Years on Record: 86

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		2532.2		---		---		---		148.3		299.7		450		554.6		525.3		371.7		182.6		---		---

Average Length of Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		12.6		10.5		11.4		12.4		13.6		14.6		15		14.8		13.9		12.8		11.7		10.7		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		16.4		9.4		11.8		15.8		19.8		22		23.4		24.6		20.9		17.8		13.6		10.1		8.3

Average Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		5.6		3		4.1		5.5		6.8		8		8.3		7.6		7.1		5.8		4.4		3.3		2.8

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		18.1		14.7		15.4		18.3		20		20.1		20.4		21.8		20.3		19.5		17.8		15.1		13.5

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		19.4		16.1		16.3		18.5		20.7		21.2		22.6		25.5		21.5		20.4		18.5		16.5		14.7

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		16.4		9.4		11.8		15.8		19.8		22		23.4		24.6		20.9		17.8		13.6		10.1		8.3

Maximum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		6.1		3.4		4.5		5.9		7.5		8.7		9		8.3		7.8		6.4		5		3.7		3.1

Maximum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		21.7		19.4		20.2		23.1		23.1		23.2		22.9		23.8		22.7		22.6		22.2		19.9		17.1

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		25.8		23.4		24		26.5		26.7		28		28.6		30.4		26.5		25.9		25.6		24.1		20

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		13.7		8.1		9.2		13.6		17.1		17.5		19.9		22.2		18		15.4		10.2		7.2		6.1

Minimum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		4.7		2.3		3.2		4.4		5.9		7		7.4		6.7		6.3		4.9		3.5		2.5		2.3

Minimum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		14.5		11.8		11.2		15.3		17.1		16.1		17.6		19.8		17.4		16.6		12.3		9.6		8.8

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		13.4		12		10		13.8		15.4		13.4		16.3		21		15.9		15.4		10.4		8.6		8.2