GRAND CANYON, ARIZONA

Average Temperature

Years on Record: 114

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		49.3		32.3		34.7		39		46.2		54.4		63.4		68.4		66.5		61		51		40.7		33.9

Average High Temperature

Years on Record: 114

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		63.7		45.1		47.5		52.4		61		70.1		80.4		83.7		80.9		75.8		66.2		55.1		47

Average Low Temperature

Years on Record: 114

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		34.8		19.6		21.9		25.6		31.5		38.6		46.4		53.2		52.1		46.1		35.7		26.4		20.8

Highest Recorded Temperature

Years on Record: 114

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		102		74		74		76		87		92		100		102		101		93		85		80		74

Lowest Recorded Temperature

Years on Record: 114

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		-25		-25		-18		-6		2		8		22		32		32		11		7		-7		-17

Average Number of Days Above 90F/32C

Years on Record: 114

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		9.1		---		---		---		---		0.1		2.7		4.7		1.5		0.1		---		---		---

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		67.8		---		---		---		---		3.4		17.5		23.2		17		6.6		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		148.5		---		0.1		0.7		5.2		17.9		28.6		30.8		30.3		25.1		9.4		0.6		---

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		213.5		1		1.9		8.7		18.6		28.5		29.9		31		31		29.4		23.6		8.8		1

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		287.1		11.3		13.1		20.9		26.8		30.8		30		31		31		29.9		29.7		21.1		11.4

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		340.5		23.8		23.3		28.5		29.2		31		30		31		31		30		30.7		27.9		24

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		365		31		28		31		30		31		30		31		31		30		31		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		359.1		31		28		31		30		30.9		28.9		27.9		29.4		29.9		31		30		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		278.8		31		28		31		29.9		27.7		15.8		2.7		4.2		17.5		30.2		30		31

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		205.9		30.8		27.6		29.4		24		12		2.1		0.1		---		2.7		18.3		28.2		30.8

Average Number of Days Below 32F/0C

Years on Record: 114

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		166.9		28.5		25.2		25.2		16.9		6.9		1.3		---		---		1.3		10.8		22.5		28.3

Average Number of Days Below 20F/-6C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		35.6		9.8		6.7		4.1		0.9		---		---		---		---		---		0.4		4		9.6

Average Number of Days Below 10F/-12C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		5.6		1.9		1		0.3		---		---		---		---		---		---		---		0.3		2

Average Number of Days Below 0F/-17C

Years on Record: 114

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		3.3		1.4		0.8		0.1		---		---		---		---		---		---		---		0.1		1

Average Precipitation

Years on Record: 114

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		21.6		2.1		2.2		2		1.3		0.7		0.5		2.9		3.2		1.7		1.5		1.4		2.1

Average Number of Days With Precipitation

Years on Record: 114

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		68		6		6		6		4		3		2		10		11		6		4		4		6

Most Reported Precipitation in a Month

Years on Record: 114

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		10.5		7.5		9.6		8.5		7.9		5		2.8		10.5		8.8		8		10.5		7.7		7.6

Least Reported Precipitation in a Month

Years on Record: 114

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

Most Precipitation Reported in a Day

Years on Record: 114

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		5.3		2.6		3.5		2.5		5.3		1.3		2.5		2.8		2.5		2.7		2.3		2.8		4

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		49.3		4.7		4.6		5		3		1.7		1.2		6.7		8		4		3.3		3.1		4

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

Years on Record: 114

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		47		4		4		5		3		2		1		7		7		4		3		3		4

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

Years on Record: 114

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		12		1		1		1		1		---		---		2		2		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		14.2		1.5		1.6		1.6		0.6		0.3		0.3		1.5		2.5		1.2		0.9		1		1.2

Avg. No. of Days w/Precip. Above 1in/25mm

Years on Record: 114

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

Average Snowfall

Years on Record: 114

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		70		16.6		13.8		13.3		5.6		1.2		---		---		---		---		0.9		5.2		13.4

Average Number of Days With Snow

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		18.8		4.2		3.8		3.5		1.8		0.1		---		---		---		---		0.2		1.7		3.5

Average Snow Cover

Years on Record: 102

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

Most Snow Reported in a Month

Years on Record: 114

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		75		75		59.8		57.3		38		14		---		---		---		1		8.4		26		61

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		17.2		4.1		3.6		3.3		1.6		---		---		---		---		---		0.2		1.3		3.1

Avg. No. of Days w/Snow Above 3in/7.5cm

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		10		2.3		2.4		2		0.8		---		---		---		---		---		0.1		0.7		1.7

Avg. No. of Days w/Snow Above 5in/12.7cm

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		5.3		1.1		1.2		1.2		0.4		---		---		---		---		---		0.1		0.4		0.9

Avg. No. of Days w/Snowfall Above 10in/25cm

Years on Record: 30

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

Heating Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		5531		933		791		744		525		276		67		8		19		121		416		697		934

Cooling Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		322		---		---		---		---		8		68		138		86		22		---		---		---

Growing Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		2342		---		1		9		54		221		452		595		532		354		112		11		---

Average Length of Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		12.6		10.6		11.4		12.4		13.6		14.5		15		14.7		13.9		12.8		11.7		10.8		10.3

Average Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		5.1		2.9		3.8		5.3		6.5		7.3		7.6		6.4		5.7		5.5		4.4		3.3		2.7

Average Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.4		0.8		1.1		1.3		1.6		1.8		1.9		2.3		2		1.5		1.1		0.8		0.7

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		5.7		4.6		5.1		6.3		6.7		6.7		6.6		5.7		5.5		6		5.8		5.1		4.6

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		6.6		5.2		5.7		7.1		7.9		8.3		8.4		6.2		5.6		6.7		6.5		6		5.3

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		5.1		2.9		3.8		5.3		6.5		7.3		7.6		6.4		5.7		5.5		4.4		3.3		2.7

Maximum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.6		1		1.3		1.5		1.8		2.4		2.3		2.4		2.2		1.7		1.3		0.9		0.9

Maximum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		6.7		5.5		6.4		7.4		7.6		7.5		7.2		6.4		6.5		6.8		7.4		6		5.6

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		8.5		6.8		8.1		9.1		9.8		10.5		10.3		7.8		7.7		8.1		9.1		7.5		6.9

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		4.4		2.4		3		4.7		5.9		5.6		6.5		5.5		5		5		3.9		3		2.3

Minimum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.1		0.6		0.7		0.9		1.2		1.3		1.6		2		1.7		1.2		0.6		0.6		0.5

Minimum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		4.8		3.4		3.7		5.5		6		5.1		5.7		5		4.8		5.4		5		4.4		3.5

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		4.9		3.5		3.6		5.8		6.5		4.9		6.2		4.6		4.3		5.6		5.2		4.8		3.7