TUCSON - UNIVERSITY OF ARIZONA, ARIZONA

Average Temperature

Years on Record: 115

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		20.3		10.8		12.6		15.1		18.9		23.4		28.5		30.6		29.6		27.3		21.3		15.1		11.2

Average High Temperature

Years on Record: 115

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		28.6		18.6		20.5		23.5		27.9		32.7		37.7		37.8		36.6		35.1		29.9		23.5		19

Average Low Temperature

Years on Record: 115

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		12.2		3.1		4.6		6.7		9.9		14.2		19.3		23.3		22.4		19.4		12.7		6.6		3.4

Highest Recorded Temperature

Years on Record: 115

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		46.1		32.2		33.9		36.7		40		43.9		46.1		46.1		44.4		44.4		40		34.4		31.1

Lowest Recorded Temperature

Years on Record: 115

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		-14.4		-14.4		-8.3		-5.6		-2.2		---		6.1		9.4		12.8		5.6		-1.7		-7.2		-12.2

Average Number of Days Above 100F/38C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		42.9		---		---		---		0.2		2.6		14		14.3		8.4		3.3		---		---		---

Average Number of Days Above 90F/32C

Years on Record: 115

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		150.1		---		0.1		0.7		5.8		19.2		28.4		29.6		29.2		25.5		11.1		0.4		---

Average Number of Days Above 80F/26C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		209.4		0.6		1.6		8.7		19.1		28.7		29.9		31		30.9		29.4		22.5		7.1		0.1

Average Number of Days Above 70F/21C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		277		8.3		12.2		20.8		26.7		30.8		30		31		31		30		29.6		19.2		7.4

Average Number of Days Above 60F/15C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		338.6		23.3		23.2		28.7		29.5		31		30		31		31		30		31		27.5		22.5

Average Number of Days Above 50F/10C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		362.1		30		27.6		30.9		30		31		30		31		31		30		31		29.9		29.7

Average Number of Days Above 40F/4C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		364.9		31		28		31		30		31		30		31		31		30		31		30		31

Average Number of Days Below 70F/21C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		267.8		31		28		31		29.7		27.3		10.8		2.8		3.6		12.9		29.7		30		31

Average Number of Days Below 60F/15C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		198.6		31		28		30.2		23.8		8.1		0.4		---		---		0.7		16.4		29.1		31

Average Number of Days Below 50F/10C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		125.7		27.6		23		17.9		6.9		0.4		---		---		---		---		3		18.6		28.4

Average Number of Days Below 40F/4C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		40.6		12.6		6.8		3.2		0.4		---		---		---		---		---		0.1		3.4		14

Average Number of Days Below 32F/0C

Years on Record: 115

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		26.4		8.8		5.1		2		0.2		---		---		---		---		---		0.1		2.6		7.6

Average Precipitation

Years on Record: 115

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		282		22		21		19		10		5		7		52		55		29		19		20		24

Average Number of Days With Precipitation

Years on Record: 115

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		50		4		4		4		2		1		2		9		9		5		3		3		4

Most Reported Precipitation in a Month

Years on Record: 115

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		192		142		105		99		90		34		53		192		142		112		147		117		149

Least Reported Precipitation in a Month

Years on Record: 115

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

Most Precipitation Reported in a Day

Years on Record: 115

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		105.7		66.8		31.8		36.1		32.3		34		39.6		59.9		73.2		72.1		105.7		53.1		54.6

Avg. No. of Days w/Precip. Above 0.1in/2.5mm

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		27		2.3		2.4		2.3		1		0.5		0.6		4.7		5		2.5		1.6		1.6		2.5

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

Years on Record: 115

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		28		2		2		2		1		1		1		5		5		3		2		2		2

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

Years on Record: 115

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		4		---		---		---		---		---		---		1		1		1		---		---		1

Avg. No. of Days w/Precip. Above 0.5in/13mm

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		7		0.5		0.5		0.5		0.2		---		0.1		1.4		1.4		0.9		0.6		0.3		0.6

Average Snowfall

Years on Record: 115

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		2		0.8		0.5		0.2		---		---		---		---		---		---		---		---		0.5

Average Number of Days With Snow

Years on Record: 30

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

Most Snow Reported in a Month

Years on Record: 115

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		15.2		15.2		12.4		15.2		---		---		---		---		---		---		---		---		10.2

Avg. No. of Days w/Snow Above 1in/2.5cm

Years on Record: 30

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

Heating Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		1391		365		250		156		49		3		---		---		---		---		19		164		385

Cooling Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		3284		1		4		37		142		380		612		691		643		519		227		29		1

Growing Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		7475		136		188		351		544		842		1062		1156		1108		969		673		323		123

Average Length of Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		12.6		10.8		11.5		12.4		13.4		14.3		14.7		14.5		13.7		12.7		11.8		10.9		10.5

Average Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		19.5		12.1		15.2		20.5		25.4		27.4		27.2		23.3		21.2		20.3		16.6		13.3		11.1

Average Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		5.1		3.1		3.9		4.5		5.2		6.2		7.1		8.1		7.3		5.5		4.2		3.1		2.8

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		21.4		17.8		20.3		23.8		25.4		24.9		23.6		20.7		20.4		21.9		21.1		19		17.1

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		24.7		20.8		22.4		27.3		31.2		31.5		29.6		22.4		21		24.1		23.3		22.6		20.1

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		19.5		12.1		15.2		20.5		25.4		27.4		27.2		23.3		21.2		20.3		16.6		13.3		11.1

Maximum 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		3.8		4.6		5.5		6.3		8		8.2		8.6		7.8		6.1		5		3.5		3.3

Maximum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		24		20.3		23.9		26.2		28		28		25.9		23		23		24.7		24.5		21.5		19.3

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		30		24.9		28.3		31.9		36.8		39.7		35.7		27.7		26.5		29.3		29.2		26.7		23.7

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		17.3		9.8		13.4		18.1		23		22.8		24.3		21.3		19.5		18.8		14.3		12.3		9.9

Minimum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		4.1		2.5		3		3.7		3.9		4.3		5.8		7.2		6.4		4.6		3.2		2.5		2.4

Minimum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		18.6		13.4		17.2		20.6		23		20.8		21.3		19.1		18.7		20.1		17.5		17.2		14.5

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		19.6		13.9		17.4		21.5		25.9		21.9		23.7		18.8		17.8		20.7		17.5		19.6		16