TARA HILLS RESEARCH STATION, NEW ZEALAND

Average Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		49.1		61.3		60.8		55.9		49.5		43		37.2		35.4		40.1		45.3		49.6		54		57.9

Average High Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		60.4		74.1		73.9		68.4		61.2		53.1		46.2		44.4		49.8		56.1		61		66		70

Average Low Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		37.9		48.6		47.7		43.5		37.8		33.1		28.4		26.4		30.4		34.3		38.1		41.9		45.9

Highest Recorded Temperature

Years on Record: 18

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		94.8		94.8		93.4		89.8		76.3		72.9		64.2		60.6		70.9		76.5		75.9		85.8		87.3

Lowest Recorded Temperature

Years on Record: 16

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		---		32.4		---		---		33.6		---		---		---		---		---		---		34.2		32.2

Average Number of Days Above 80F/26C

Years on Record: 18

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		34.8		12.9		10.9		3.7		---		---		---		---		---		---		---		1.6		5.7

Average Evaporation Rate

Years on Record: 19

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		41.4		6.6		5.1		4		2.4		1.7		1.1		1.1		1.6		2.7		3.9		5.2		6

Average Rainfall

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		5.5		0.5		0.4		0.5		0.4		0.5		0.5		0.4		0.4		0.4		0.4		0.5		0.7

Average Number of Rainy Days

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		112.8		8.3		7.3		7.3		8		10.2		12.1		10.8		10.8		9.7		10.6		8		9.7

Most Rain Reported in a Day

Years on Record: 21

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		3.3		1.6		1.4		2		1.4		2.8		1.2		2.1		2		1.6		1.2		2.2		3.3

Avg. No. of Days w/Rain Above 0.1in/2mm

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		71.3		5.7		5.1		4.7		5.4		6.2		7		5.4		5.7		6.1		6.8		5.8		7.4

Average Number of Days With Frost

Years on Record: 16

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		106.6		0.1		0.1		1.6		6.1		13.6		22		24.7		18.8		10.5		5.7		3.1		0.3

Average Morning Relative Humidity

Years on Record: 19

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		74.8		66.2		73.7		75.7		78		81.9		85.3		85.3		81.5		71.6		69		64.1		65

Heating Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		5804.5		114.7		118.7		282.1		465		682		834		917.6		771.9		591		477.4		330		220.1

Growing Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		1203.2		350.3		305.1		182.9		---		---		---		---		---		---		---		120		244.9

Average Vapor Pressure

Years on Record: 19

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

Average Length of Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		12.6		15.7		14.4		12.9		11.3		10.1		9.4		9.8		10.8		12.3		13.9		15.3		15.7

Average Wind Speed

Years on Record: 23

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mph		6.1		7.4		6.7		6.3		5.3		4.9		4.2		3.8		4.7		6.3		7.4		7.8		7.8

Highest Reported Hourly Wind Speed

Years on Record: 15

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mph		26.4		21.9		21.9		18.6		17.6		20.9		25		16.8		21.3		25.1		26.4		25.3		21.1

Highest Reported Wind Gust

Years on Record: 16

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mph		66.9		61.1		63.3		63.3		57.5		56.4		57.5		53		58.8		65.6		63.3		58.8		66.9

Avg. # of Days w/Wind Above 32 mph/52 km/h

Years on Record: 16

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		138.4		15.4		12.3		12.5		9.1		8.9		6.4		4.6		8		12		16.2		15.8		17.2

Avg. # of Days w/Wind Above 39 mph/63 km/h

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		38.3		4.5		3.2		3.3		2.7		2.4		1.5		1.2		2.2		3.4		4.1		5		4.8

Average Primary Wind Direction

Years on Record: 6

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
°		279.4		299		257.1		285.3		285.7		223.3		300		263.9		261.1		282		291.7		299		304.3

Avg. # of Days w/Wind Above 59 mph/82 km/h

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		1		0.1		0.1		0.1		---		---		---		---		---		0.2		0.2		0.1		0.2

Average Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		3.7		5.9		5.3		4.1		2.8		1.8		1.3		1.4		2.1		3.3		4.5		5.6		6

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		2.5		2		1.5		1		0.7		0.5		0.6		0.9		1.3		1.9		2.4		2.6

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		4.2		5.3		5.3		4.9		4		3.3		2.5		2.8		3.2		4.1		4.7		5.1		5.2

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		4.4		5.6		5.6		5.1		4.3		3.5		2.9		2.8		3.3		4.1		4.7		5.3		5.5

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		3.7		5.9		5.3		4.1		2.8		1.8		1.3		1.4		2.1		3.3		4.5		5.6		6

Maximum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.5		2.6		2.1		1.6		1.1		0.7		0.5		0.6		0.9		1.4		1.9		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		6.1		5.9		6		4.7		3.8		3.3		3.8		4.1		5.1		5.5		5.6		6.2

Maximum 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		7.3		6.8		7.1		5.3		4.1		4		4.2		4.5		5.6		6.2		6.2		7.6

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		3.1		4.9		4.7		3.7		2.3		1.5		1		1.1		1.8		2.6		3.7		4.8		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		2.3		1.9		1.2		0.9		0.6		0.5		0.5		0.8		1.2		1.7		2.3		2.4

Minimum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		3.4		4.4		4.6		4.2		3		2.5		1.7		1.8		2.5		3		3.8		4.4		4.3

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		3.1		3.9		4.4		4.1		2.9		2.5		1.7		1.7		2.4		2.6		3.2		3.9		3.7