DIABLO, NEVADA

Average Temperature

Years on Record: 21

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		52.7		28.8		36.6		43		49.7		60.9		71.4		79.4		75.4		64.5		53.5		40.3		28.7

Average High Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		67.8		40.8		48.1		58.2		64.1		77.6		91.4		99		92.8		79.9		67.2		50.2		41.9

Average Low Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		39.2		16.4		25		34.2		37.7		45.9		57.9		64.8		59.2		48.2		36.6		25.2		17.3

Highest Recorded Temperature

Years on Record: 21

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		112		67		71		82		89		105		108		112		110		104		90		76		68

Lowest Recorded Temperature

Years on Record: 21

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		-25		-25		-22		3		12		21		29		38		36		25		10		6		-20

Average Number of Days Above 90F/32C

Years on Record: 21

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		72.7		---		---		---		---		4.5		14.3		26.8		21.2		5.8		0.1		---		---

Average Number of Days Below 32F/0C

Years on Record: 21

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		153.7		28.2		22.7		21.2		13		3.5		0.3		---		---		0.8		12.1		23.9		28

Average Number of Days Below 0F/-17C

Years on Record: 21

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		7.7		4.5		0.9		---		---		---		---		---		---		---		---		---		2.3

Average Precipitation

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		8.6		0.7		0.5		0.9		0.5		0.6		0.3		0.8		1.4		1.2		0.6		0.5		0.5

Average Number of Days With Precipitation

Years on Record: 21

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		31		3		3		3		3		2		2		3		4		2		1		3		2

Most Reported Precipitation in a Month

Years on Record: 21

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		5.3		2.3		2.3		3.6		1.6		1.4		2.2		5.3		3.1		2		2.8		0.9		2.2

Most Precipitation Reported in a Day

Years on Record: 21

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		1.8		1.3		1.2		1		0.9		0.8		0.8		1.5		1.4		1.2		1.8		0.6		1.5

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

Years on Record: 21

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

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

Years on Record: 21

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

Average Snowfall

Years on Record: 21

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		4.1		0.3		1.7		0.2		0.7		---		---		---		---		---		---		0.4		0.8

Most Snow Reported in a Month

Years on Record: 21

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		13		2.5		13		2		8.2		0.4		---		---		---		---		---		4		7.8

Heating Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		3194		688		498		440		251		65		---		---		---		6		144		426		676

Cooling Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		2041		---		---		6		47		139		378		583		530		273		85		---		---

Growing Degree Days

Years on Record: 21

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		3222.2		---		---		---		---		337.9		642		911.4		787.4		435		108.5		---		---

Average Length of Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		12.7		10.4		11.3		12.4		13.7		14.7		15.3		15		14		12.8		11.6		10.6		10.1

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		2.6		3.5		4.9		6		6.9		7.6		7.1		6.4		5.4		4.1		2.9		2.4

Average Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.3		0.7		1		1.3		1.7		2		1.9		2		1.8		1.3		1		0.8		0.6

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		5.7		4.5		4.9		6		6.2		6.3		6.6		6.3		6.2		6.2		5.8		4.7		4.5

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		5.5		6.6		7		7.6		8.6		7.8		7.3		7.2		6.5		5.4		5.1

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		2.6		3.5		4.9		6		6.9		7.6		7.1		6.4		5.4		4.1		2.9		2.4

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		0.8		1.1		1.5		1.9		2.2		2.3		2.3		2		1.6		1.2		0.9		0.7

Maximum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		6.6		5.4		5.9		6.8		6.9		7		7.3		7.1		7.4		7.2		7.2		5.3		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		8.4		6.3		7.1		8		8.4		9.3		10.7		9.9		9.9		9		8.9		6.4		6.8

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		2.2		3		4.4		5.3		6		6.8		6.3		5.8		4.8		3.4		2.5		2

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		0.8		1.1		1.5		1.6		1.5		1.6		1.3		1		0.6		0.7		0.4

Minimum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		4.8		3.5		4.1		5.2		5.4		5.5		5.9		5.6		5.6		5.4		4.5		3.8		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		5.1		3.6		4.2		5.4		5.5		5.7		6.8		6.1		6		5.7		4.6		4		3.7