WITTENOOM GORGE, WESTERN AUSTRALIA

Average Temperature

Years on Record: 43

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		79		90		88		86		80		70		65		63		67		74		81		87		90

Average High Temperature

Years on Record: 43

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		91		103		100		98		91		81		75		75		79		87		94		100		103

Average Low Temperature

Years on Record: 43

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		67		78		77		75		70		60		55		52		55		62		68		74		77

Highest Recorded Temperature

Years on Record: 43

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		117		116		117		111		106		99		89		87		93		100		109		112		115

Lowest Recorded Temperature

Years on Record: 43

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		34		62		59		55		51		42		34		34		38		44		44		53		62

Average Morning Temperature

Years on Record: 43

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		78		89		87		86		80		70		64		62		66		74		82		87		90

Average Afternoon Temperature

Years on Record: 43

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		89		100		97		96		89		79		74		74		78		86		93		98		100

Average Number of Days Above 104F/40C

Years on Record: 38

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		56.8		17.1		9.9		5.4		0.2		---		---		---		---		---		1		7.2		16

Average Number of Days Above 95F/35C

Years on Record: 38

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		159.5		28.1		22.5		23.6		9.1		0.4		---		---		---		2.8		17.7		26		29.3

Average Number of Days Above 86F/30C

Years on Record: 38

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		233.3		30.4		26.9		29.6		25.2		8.3		0.7		0.2		4.1		18.9		28.8		29.4		30.7

Average Precipitation

Years on Record: 46

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		16		3		3		2		---		1		1		---		---		---		---		---		1

Average Number of Rainy Days

Years on Record: 45

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		43.6		8.3		8.4		5.4		3.4		3.8		3.2		1.9		1.5		0.8		0.8		1.8		4.5

Most Rain Reported in a Day

Years on Record: 42

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		12		6		4		4		3		2		3		2		1		---		1		---		12

Most Rain Reported in a Month

Years on Record: 46

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		20		10		16		12		8		6		7		4		2		1		1		1		20

Average Morning Relative Humidity

Years on Record: 39

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		35		36		42		35		37		41		47		43		36		27		23		24		28

Average Evening Relative Humidity

Years on Record: 39

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		24		23		28		24		26		30		32		29		24		17		16		16		19

Average Morning Dew Point

Years on Record: 35

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		45		56		59		53		49		43		41		37		37		36		38		42		49

Average Afternoon Dew Point

Years on Record: 35

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		42		51		55		50		46		42		40		35		35		32		34		38		45

Average Morning Web Bulb

Years on Record: 39

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		61		70		70		67		63		57		53		51		53		56		60		64		67

Average Afternoon Wet Bulb

Years on Record: 39

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		64		72		72		70		66		60		57		56		58		60		64		67		70

Heating Degree Days

Years on Record: 43

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		46.5		---		---		---		---		---		---		46.5		---		---		---		---		---

Cooling Degree Days

Years on Record: 43

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		5034.4		790.5		663.9		666.5		465		170.5		---		---		62		285		496		660		775

Growing Degree Days

Years on Record: 43

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		10087		1116		1017		1116		915		635.5		450		418.5		527		735		961		1080		1116

Average Length of Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		12.5		13.7		13.2		12.6		11.9		11.4		11.2		11.3		11.8		12.4		13		13.6		13.9

Average Number of Clear Days

Years on Record: 38

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		179.3		5.9		6.1		10.2		11.3		15.2		16.2		21.5		22.6		22.5		21.2		15.9		10.8

Average Number of Cloudy Days

Years on Record: 38

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		57.2		7.7		8		6.2		6.3		6.8		6.3		3.4		2.8		1.6		1.5		2.5		4.3

Average Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		6.3		7.5		6.7		6.3		5.4		4.5		4.1		4.6		5.7		6.8		7.6		8		7.9

Average Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.5		2.1		2.1		1.7		1.3		1.1		1		0.9		0.9		1.1		1.5		1.8		2

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		6.5		6.7		6.4		6.5		6.2		5.6		5.1		5.7		6.8		7.3		7.3		7.2		7.8

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		7.6		7.7		6.7		7		6.8		6.3		6.2		7.3		8.2		8.7		8.8		8.8		8.4

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		6.3		7.5		6.7		6.3		5.4		4.5		4.1		4.6		5.7		6.8		7.6		8		7.9

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		2.5		2.4		2		1.5		1.3		1.2		1.2		1.2		1.6		1.8		2.1		2.3

Maximum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		7.2		7.2		7.3		7.1		7.1		6.6		6		6.2		7.2		7.6		7.7		7.8		8.6

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		8.9		8.7		8.8		8.3		8.5		8.2		7.9		8.2		9.1		9.5		9.6		10.3		10

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		5.5		6.4		5.7		5.3		5		3.8		3.5		3.8		5.1		5.8		7		7.4		7.1

Minimum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.2		1.9		1.7		1.4		1		0.8		0.7		0.7		0.7		1		1.3		1.5		1.7

Minimum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		5.7		5.8		5.4		5.4		5.5		4.5		4.2		4.5		6		6.1		6.8		6.8		7

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		5.8		5.6		4.8		4.9		5.7		4.5		4.5		4.9		6.7		6.5		7.6		7.7		6.8