WINSTON-SALEM - AIRPORT, NORTH CAROLINA

Average Temperature

Years on Record: 66

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		14.6		3.9		5		9.3		14.3		19.3		23.7		25.1		24.4		21.3		15.3		8.9		4.3

Average High Temperature

Years on Record: 66

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		20.8		9.7		11.1		15.8		21.1		26.1		29.9		31		30.1		27.4		22.2		15.6		10.1

Average Low Temperature

Years on Record: 66

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		8.4		-1.8		-1		2.9		7.6		12.7		17.5		19.3		18.7		15.3		8.4		2.3		-1.4

Highest Recorded Temperature

Years on Record: 66

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		40		26.1		28.3		32.8		33.9		38.3		40		40		40		38.9		35.6		28.9		26.1

Lowest Recorded Temperature

Years on Record: 66

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		-23.3		-23.3		-18.3		-11.1		-6.1		-5.6		4.4		6.1		8.3		2.2		-6.1		-13.9		-19.4

Average Number of Days Above 90F/32C

Years on Record: 66

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		39.5		---		---		0.1		0.4		2.4		10.1		12.2		9.7		4.3		0.4		---		---

Average Number of Days Below 32F/0C

Years on Record: 66

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		84.6		20.8		17.2		10.2		2.2		0.1		---		---		---		---		1.8		11.9		20.4

Average Number of Days Below 0F/-17C

Years on Record: 66

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

Average Precipitation

Years on Record: 66

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		1105		86		87		98		88		99		98		119		113		85		77		66		89

Average Number of Days With Precipitation

Years on Record: 66

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		106		9		9		10		9		10		9		11		10		7		6		7		9

Most Precipitation Reported in a Day

Years on Record: 66

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm.		158.5		102.6		69.8		152.4		61		76.2		112		117.6		113.5		141.2		158.5		82.5		89.7

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

Years on Record: 66

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		77		7		7		8		6		7		7		8		7		5		4		5		6

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

Years on Record: 66

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		30		3		2		3		3		3		3		3		3		2		2		2		3

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

Years on Record: 66

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		11		1		1		1		1		1		1		1		1		1		1		1		1

Most Rain Reported in a Month

Years on Record: 66

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		1440		307		183		252		180		189		253		275		310		255		209		182		168

Least Rain Reported in a Month

Years on Record: 66

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		706		---		27		11		15		4		17		15		20		6		3		7		14

Average Snowfall

Years on Record: 66

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm.		23.6		7.6		6.3		4.1		0.8		0.2		---		---		---		---		---		0.5		4.3

Most Snow Reported in a Month

Years on Record: 66

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm.		84.1		48		38.1		54.1		23.1		10.7		1		---		2.5		---		---		8.9		53.3

Heating Degree Days

Years on Record: 66

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		2379.4		446.1		375.9		278.2		120.8		---		---		---		---		---		94.7		282.5		434

Cooling Degree Days

Years on Record: 66

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		683.1		---		---		---		---		31.9		160.8		211		188.6		90.8		---		---		---

Growing Degree Days

Years on Record: 66

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		2250.8		---		---		---		129.2		290.2		410.8		469.3		446.9		340.8		163.6		---		---

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		15.1		14.8		13.9		12.8		11.7		10.7		10.2

Average Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		14.8		8.5		11		14.9		18		20.3		20.7		20.3		18		15.9		13.2		9.5		7.8

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		3.3		4.3		5.7		7.2		8.3		8.9		8.6		7.7		6.2		4.5		3.4		2.9

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		16.3		12.7		14.1		17.1		18.1		18.6		18.2		18.2		17.4		17.3		17.2		14		12.4

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		16.1		13.2		14.2		16.6		17.2		18.2		17.7		17.6		15.9		16.6		17.6		14.9		13.1

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		14.8		8.5		11		14.9		18		20.3		20.7		20.3		18		15.9		13.2		9.5		7.8

Maximum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		6.2		3.4		4.5		6		7.6		8.7		9.1		8.9		7.9		6.5		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		19.3		14.6		18		19.1		21.2		21.5		20.1		21.2		19.8		21		21.7		17.9		14.9

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		21.2		16		20.3		19.7		22.9		24.1		21.7		24.2		20.4		22.9		24.7		20.8		16.8

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		11.8		7.1		7.9		12.7		14.6		15.3		17		17.2		15		12.8		9.5		6.5		6.5

Minimum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		5.4		3.1		3.8		5.4		6.6		7.6		8.5		7.8		7.3		5.5		3.6		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		12.5		9.9		9.2		14.2		14.4		14.1		15.1		15.5		14.4		13.4		11.2		8.3		9.5

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		10.1		9.2		7.3		12		11.2		10.1		11.8		12.5		11		10.8		9.1		6.9		9.1