WILLIAMSTOWN, SOUTH AUSTRALIA

Average Temperature

Years on Record: 23

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		55		66		66		62		56		50		46		45		46		49		54		58		63

Average High Temperature

Years on Record: 23

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		67		80		81		75		69		60		55		54		55		59		66		71		77

Average Low Temperature

Years on Record: 23

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		44		52		52		49		44		40		38		37		37		39		42		45		49

Highest Recorded Temperature

Years on Record: 25

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		108		108		108		105		93		79		71		74		77		81		89		102		104

Lowest Recorded Temperature

Years on Record: 25

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		19		35		33		28		25		23		19		19		23		24		25		28		32

Average Morning Temperature

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		56		66		65		63		58		50		45		45		47		51		57		59		64

Average Afternoon Temperature

Years on Record: 19

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		67		78		79		73		67		59		53		52		54		57		64		69		74

Average Number of Days Above 104F/40C

Years on Record: 23

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		1.1		0.6		0.3		---		---		---		---		---		---		---		---		---		0.1

Average Number of Days Above 95F/35C

Years on Record: 23

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		10.4		4.1		3.6		0.8		---		---		---		---		---		---		---		0.3		1.7

Average Number of Days Above 86F/30C

Years on Record: 23

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		37.9		10.1		10.6		5.2		1.1		---		---		---		---		---		0.5		3.1		7.3

Average Number of Days Below 35F/2C

Years on Record: 23

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		62.3		0.1		0.1		1		4		9		10.2		10.8		10.2		8.7		5.3		2.1		0.8

Average Number of Days Below 32F/0C

Years on Record: 23

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		29.5		---		---		0.1		1		4.1		5.7		6.4		5.9		4.1		1.6		0.6		---

Average Precipitation

Years on Record: 42

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		29		---		---		1		2		3		3		4		4		3		2		1		1

Average Number of Rainy Days

Years on Record: 41

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		139.4		5.7		4.8		6.4		9.9		14.4		15.9		18.8		19.1		15		12.7		8.8		7.9

Most Rain Reported in a Day

Years on Record: 31

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

Most Rain Reported in a Month

Years on Record: 42

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		10		3		5		4		6		9		9		10		8		8		7		4		6

Least Rain Reported in a Month

Years on Record: 42

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

Average Morning Relative Humidity

Years on Record: 19

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		71		56		58		62		70		84		89		89		84		76		64		61		57

Average Evening Relative Humidity

Years on Record: 18

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		52		33		32		41		47		64		74		73		68		62		53		43		38

Average Morning Dew Point

Years on Record: 17

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		46		50		50		50		48		45		42		41		42		43		44		46		48

Average Afternoon Dew Point

Years on Record: 15

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		45		47		46		48		46		45		44		43		42		43		44		44		46

Average Morning Web Bulb

Years on Record: 17

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		51		58		57		56		53		48		44		43		44		48		51		53		55

Average Afternoon Wet Bulb

Years on Record: 14

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		56		61		62		59		56		52		49		48		48		50		55		56		59

Heating Degree Days

Years on Record: 23

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		3654.5		---		---		93		255		465		555		604.5		589		480		341		210		62

Cooling Degree Days

Years on Record: 23

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		73.4		31		42.4		---		---		---		---		---		---		---		---		---		---

Growing Degree Days

Years on Record: 23

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		2296.1		496		466.1		372		195		---		---		---		---		---		124		240		403

Average Length of Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		12.6		14.6		13.8		12.7		11.6		10.8		10.3		10.5		11.3		12.3		13.4		14.4		14.9

Average Number of Clear Days

Years on Record: 26

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		92.4		13.2		13.5		11.4		8		5.3		4.3		4.3		4.4		4.7		6.2		7.2		9.9

Average Number of Cloudy Days

Years on Record: 26

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		106.4		6		5.2		6.9		8.8		10		10.9		12.2		11.9		10.2		8.4		8		7.8

Average Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		4.8		7.3		6.5		5.4		3.9		2.7		2.3		2.5		3.2		4.4		5.6		6.6		7

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		2.2		2		1.6		1.2		0.9		0.8		0.9		1.1		1.5		1.9		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		5.2		6.5		6.3		5.9		5.1		3.9		3.6		3.8		4.2		5		5.6		6		6.1

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		5.6		7.5		7.1		6.4		5.3		4.2		3.8		4.1		4.4		5.1		5.9		6.5		6.7

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		4.8		7.3		6.5		5.4		3.9		2.7		2.3		2.5		3.2		4.4		5.6		6.6		7

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		2.4		2.2		1.8		1.3		1		0.9		0.9		1.2		1.6		2.1		2.4		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		5.9		7.2		7.4		7		5.8		4.3		4.5		4.5		4.8		5.6		6.2		6.6		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		7		9.4		9.4		8.6		6.5		4.8		5.3		5.2		5.3		6.1		7.1		7.9		8.7

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		4.2		6.9		5.8		4.6		3.4		2.4		2.1		2.2		2.9		3.9		4.8		5.9		5.5

Minimum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.4		1.9		1.5		1.2		1		0.9		0.7		0.8		1		1.4		1.7		2		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		4.4		6.2		5.6		5		4.2		3.2		3.1		3.1		3.7		4.3		4.7		5.4		4.9

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		4.3		6.8		5.6		4.8		4		3.2		3.2		3.1		3.6		4		4.2		5.2		4.2