STONY RIVER RESERVOIR, WEST VIRGINIA

Average Temperature

Years on Record: 53

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		9.9		-2.7		-0.8		5.3		9.9		13.7		18.3		20.5		18.8		17.9		12.1		6.1		0.2

Average High Temperature

Years on Record: 53

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		14.3		1.6		3.5		10.8		15.2		17.6		22.5		24.6		22		22.7		17.4		9.9		3.7

Average Low Temperature

Years on Record: 53

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		5.6		-6.9		-5.2		-0.5		4.7		9.7		14.2		16.6		15.6		13.3		6.7		2.3		-3.1

Highest Recorded Temperature

Years on Record: 53

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		33.3		16.7		17.8		23.3		25.6		27.2		28.9		31.1		30		33.3		30		20		21.1

Lowest Recorded Temperature

Years on Record: 53

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		-24.4		-24.4		-16.7		-16.7		-8.9		-2.2		4.4		5.6		5.6		1.1		-3.9		-13.3		-16.7

Average Number of Days Above 90F/32C

Years on Record: 53

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

Average Number of Days Below 32F/0C

Years on Record: 53

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		110.9		25.8		23		15		7		0.8		---		---		---		---		3		13.2		23

Average Number of Days Below 0F/-17C

Years on Record: 53

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		2.2		2.2		---		---		---		---		---		---		---		---		---		---		---

Average Precipitation

Years on Record: 53

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		1102		81		79		100		97		112		106		104		110		79		81		75		81

Average Number of Days With Precipitation

Years on Record: 53

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		121		11		10		12		11		11		11		10		9		8		8		9		11

Most Precipitation Reported in a Day

Years on Record: 53

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm.		159		43.2		43.7		57.4		48.3		89.4		159		70.6		124.5		94.2		122.4		66.8		57.1

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

Years on Record: 53

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		100		9		9		10		10		9		9		8		7		6		6		7		9

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

Years on Record: 53

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		28		2		2		2		3		3		3		3		3		2		2		2		2

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

Years on Record: 53

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

Most Rain Reported in a Month

Years on Record: 53

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		1387		137		146		235		223		268		308		212		305		236		243		163		177

Least Rain Reported in a Month

Years on Record: 53

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		693		25		17		25		35		21		20		34		12		18		2		25		18

Average Snowfall

Years on Record: 53

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm.		198.9		40.6		39.6		45.2		16		0.5		---		---		---		---		3.6		19.1		34.3

Most Snow Reported in a Month

Years on Record: 53

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm.		331.2		97.8		139.7		105.2		68.6		7.6		---		---		---		---		30.5		67.3		114.3

Heating Degree Days

Years on Record: 53

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		3575		651		541.4		409.1		250.8		144.7		---		---		---		10		193.8		366.7		559.7

Cooling Degree Days

Years on Record: 53

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		82.7		---		---		---		---		---		---		68.9		13.8		---		---		---		---

Growing Degree Days

Years on Record: 53

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		1267.6		---		---		---		---		113.7		250		327.2		272.1		240		64.6		---		---

Average Length of Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		12.7		10.3		11.2		12.4		13.7		14.9		15.4		15.1		14.1		12.9		11.6		10.5		10

Average 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		6.8		9.5		12.8		16.5		17.9		20.3		19.7		17.5		14.9		11.7		7.3		5.8

Average Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		5.8		3		4.1		5.6		7.2		8.5		8.9		8.6		7.6		6		4.4		3.2		2.7

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		14.7		10.8		12.6		14.8		16.7		16.4		17.8		17.6		16.9		16.4		15.6		10.9		9.5

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		14		10.6		12.2		13.5		15.3		14.5		17.3		16.9		15.7		15.8		15.6		10.7		9.2

Maximum 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		6.8		9.5		12.8		16.5		17.9		20.3		19.7		17.5		14.9		11.7		7.3		5.8

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		3		4.1		5.8		7.4		8.6		9.1		8.8		7.8		6.3		4.6		3.3		2.7

Maximum 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		12.8		15.9		18.5		19.6		19.8		20.4		19.1		18.7		19.5		19.4		15.8		11.1

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		18.6		12.9		16.7		19.3		20.3		21.2		22.9		19.9		19		20.8		21.2		17.7		11.3

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		11.1		5.8		7.5		11.4		14.2		13.2		17.2		17.2		15.6		12.2		9.3		5		4.8

Minimum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		5.5		2.9		3.8		5.2		6.8		8		8.4		8.4		7.3		5.5		3.8		2.8		2.6

Minimum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		11.7		8.5		9.3		12.9		14.1		12.2		15.2		15.4		15		13		11.5		6.4		7.2

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		9.5		7.7		7.7		10.7		11.2		7.8		12.4		12.9		12.5		10.5		9.9		4.9		6.4