RUSTENBURG, SOUTH AFRICA

Average Temperature

Years on Record: 112

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		64.6		73.6		72.5		69.8		64		57.7		52.2		52.3		57		64.4		68.4		70.7		72.5

Average High Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		78.8		85.6		84.2		82.2		77.2		73.4		68		68.9		74.1		80.1		82.6		83.8		85.1

Average Low Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		50.9		62.2		61.3		58.3		51.3		43		36.5		35.8		40.8		48.7		54.7		58.3		60.4

Average Precipitation

Years on Record: 112

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		26.6		5.4		3.6		3.1		2.4		0.5		0.3		0.1		0.3		0.8		2.2		3.5		4.3

Average Number of Days With Precipitation

Years on Record: 112

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		81.5		13.4		10.1		10.1		7		2.4		1.5		0.7		1.6		2.9		8		11.3		12.5

Average Number of Days With Frost

Years on Record: 112

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		37.8		---		---		---		0.3		5		11.4		12.5		7.2		1.2		0.1		0.1		---

Average Relative Humidity

Years on Record: 112

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		56.9		62.2		64.6		64.8		64.5		58.1		55		51.9		47.6		45.9		51.1		57.6		59.7

Average Dew Point

Years on Record: 112

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		49		59.9		59.9		57.4		51.8		43.1		36.5		35.2		37.3		43.1		49.6		55		57.7

Heating Degree Days

Years on Record: 112

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		1300		---		---		---		30		226.3		384		393.7		248		18		---		---		---

Cooling Degree Days

Years on Record: 112

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		1136.2		266.6		211.9		148.8		---		---		---		---		---		---		105.4		171		232.5

Growing Degree Days

Years on Record: 112

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		5314.9		731.6		635.6		613.8		420		238.7		66		71.3		217		432		570.4		621		697.5

Average Vapor Pressure

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
InHg		0.4		0.5		0.5		0.5		0.4		0.3		0.2		0.2		0.2		0.3		0.4		0.5		0.5

Average Length of Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		12.5		13.9		13.3		12.6		12.6		11.3		11		11.1		11.6		12.3		13.1		13.8		14.1

Average Possibility of Sunshine

Years on Record: 112

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		75.3		62.6		65		67.8		72.7		84.1		85.3		90.1		91		84.1		72.1		64.8		63.9

Average Percent of Cloud Cover

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		34.4		53		51		46		37		20		15		12		15		22		41		50		51

Average Wind Speed

Years on Record: 112

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mph		17.8		18.6		16.1		14.5		13.7		14.5		15.2		16.1		18.6		21.7		22.6		21.7		20.1

Average Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		5.7		6.8		6.2		5.7		5		4.6		4.2		4.5		5.2		6.1		6.3		6.6		6.8

Average Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.6		2.4		2.2		1.8		1.3		0.8		0.7		0.6		0.9		1.3		2		2.3		2.5

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		6.1		6.1		5.9		5.9		5.8		5.9		5.8		6.1		6.5		6.7		6.1		6		6

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		6.8		6.4		5.9		6.1		6.3		7.4		7.4		8		7.7		7.7		6.4		6.2		6.3

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		5.7		6.8		6.2		5.7		5		4.6		4.2		4.5		5.2		6.1		6.3		6.6		6.8

Maximum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.8		2.6		2.4		2.1		1.6		1.1		1		0.9		1.2		1.7		2.2		2.6		2.7

Maximum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		6.9		6.9		6.9		7		6.9		6.7		6.4		6.6		7.1		7.5		6.8		7		6.9

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		8.5		8.2		8		8.2		8.3		9		8.7		8.9		8.7		9.2		7.9		8.4		8.2

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		4.7		5.9		4.8		4.3		4.2		3.9		3.5		4.1		4.5		4.9		5.4		5		5.8

Minimum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.3		2.1		1.8		1.4		1		0.5		0.4		0.5		0.7		1		1.7		1.9		2.1

Minimum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		5		5.4		4.5		4.4		4.8		4.9		4.7		5.4		5.5		5.2		5.3		4.6		5.2

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		4.8		4.8		3.4		3.5		4.5		5.6		5.5		6.6		5.9		5.1		4.8		3.5		4.5