HAYSI, VIRGINIA

Average Temperature

Years on Record: 41

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		53		23.3		32.7		45.1		54.3		64.8		71.3		74.8		71		65.4		56.2		42.5		34.2

Average High Temperature

Years on Record: 41

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		66.3		34.1		46.7		61.1		70		80.1		84.8		87.5		84.4		77.8		69.1		54.6		45.7

Average Low Temperature

Years on Record: 41

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		40		12.6		19.9		29.9		38.7		49.7		57.6		61.5		59.6		53.8		43.5		30.5		22.7

Highest Recorded Temperature

Years on Record: 41

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		106		72		79		84		94		96		106		106		105		97		90		84		77

Lowest Recorded Temperature

Years on Record: 41

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		-11		-11		-7		---		20		31		41		49		47		38		24		11		---

Average Number of Days Above 90F/32C

Years on Record: 41

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		29.7		---		---		---		---		3.2		9		11.2		4.8		1.5		---		---		---

Average Number of Days Below 32F/0C

Years on Record: 41

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		123.7		29.3		25.2		18.3		6.3		0.8		---		---		---		---		3		18		22.8

Average Number of Days Below 0F/-17C

Years on Record: 41

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		8.7		6		1		0.7		---		---		---		---		---		---		---		---		1

Average Precipitation

Years on Record: 41

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in.		44.2		3.4		3.3		3.7		3.8		4.6		4.5		4.3		4		3.4		3		3.2		3.1

Average Number of Days With Precipitation

Years on Record: 41

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		137		13		12		12		11		13		12		12		10		9		9		10		12

Most Precipitation Reported in a Day

Years on Record: 41

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in.		9.1		1.8		3.7		3.8		3.1		3.4		9.1		4		2.3		2.7		2.6		2.2		2.5

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

Years on Record: 41

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		89		8		8		8		8		9		8		8		7		6		6		7		7

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

Years on Record: 41

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		29		2		2		2		2		3		3		3		3		2		2		2		2

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

Years on Record: 41

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		9		1		---		1		1		1		1		1		1		1		1		1		1

Most Rain Reported in a Month

Years on Record: 41

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in.		54.7		7.5		6.6		10.3		8.1		9.8		13.4		10.1		8.6		7		6.5		7.2		6.7

Least Rain Reported in a Month

Years on Record: 41

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in.		36.2		1.2		1.2		0.8		1.1		0.9		1.1		0.6		1.4		0.5		0.3		0.5		0.8

Average Snowfall

Years on Record: 41

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in.		14.7		5		4.6		1.6		1.1		---		---		---		---		---		---		0.5		1.9

Most Snow Reported in a Month

Years on Record: 41

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in.		57		27		18		8		36		---		---		---		---		---		---		7		13.3

Heating Degree Days

Years on Record: 41

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		5011.8		1291.2		895.5		604.5		319.5		3.1		---		---		---		---		269.7		673.5		954.8

Cooling Degree Days

Years on Record: 41

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		721.5		---		---		---		---		---		186		294.5		217		24		---		---		---

Growing Degree Days

Years on Record: 41

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		3339.2		---		---		---		130.5		461.9		636		759.5		682		474		195.3		---		---

Average Length of Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		12.6		10.4		11.3		12.4		13.6		14.7		15.2		14.9		14		12.8		11.6		10.6		10.1

Average Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		3.9		2		2.6		3.7		4.6		5.2		5.7		5.5		5.1		4.4		3.5		2.3		1.8

Average Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.7		0.9		1.2		1.6		2		2.4		2.5		2.4		2.1		1.7		1.3		0.9		0.8

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		4.2		3		3.3		4.2		4.6		4.8		5		4.9		4.9		4.8		4.5		3.4		2.8

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		4		2.9		3.1		3.8		4.1		4.3		4.9		4.7		4.6		4.6		4.5		3.4		2.7

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		3.9		2		2.6		3.7		4.6		5.2		5.7		5.5		5.1		4.4		3.5		2.3		1.8

Maximum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.7		0.9		1.2		1.7		2.1		2.4		2.5		2.5		2.2		1.8		1.3		1		0.8

Maximum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		5.1		3.7		4		5.3		5.3		5.9		5.6		5.7		5.4		5.8		5.8		5.3		3.4

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		5.5		3.9		4.1		5.4		5.3		6.6		6.2		6.2		5.6		6.4		6.5		6.3		3.6

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		3.1		1.7		2		2.6		3.7		4.1		4.9		5		4.5		3.8		2.4		1.5		1.5

Minimum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.5		0.9		1.2		1.5		2		2.1		2.4		2.3		2		1.5		1		0.7		0.8

Minimum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		3.2		2.3		2.3		2.8		3.6		3.8		4.3		4.5		4.4		4		2.9		1.8		2.1

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		2.6		2		1.8		1.8		2.6		2.7		3.5		3.9		3.7		3.4		2.2		1.3		1.8