OAKLAND - CABALLO HILLS, CALIFORNIA

Average Temperature

Years on Record: 65

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		57.1		48		51.1		53.3		56.2		59		62.5		63.6		63.2		63.8		60.5		55		49.3

Average High Temperature

Years on Record: 65

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		65.2		54.2		57.9		61.1		64.7		68		72		72.7		72		72.9		69.1		62.4		55.5

Average Low Temperature

Years on Record: 65

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		49		41.8		44.3		45.5		47.7		50.1		53		54.4		54.5		54.8		52		47.5		43

Highest Recorded Temperature

Years on Record: 65

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		104		73		78		87		90		97		104		102		99		103		98		84		73

Lowest Recorded Temperature

Years on Record: 65

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		24		24		28		30		35		38		41		47		40		42		36		30		25

Average Number of Days Above 90F/32C

Years on Record: 65

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		3.8		---		---		---		---		0.3		0.9		0.6		0.6		1.4		0.2		---		---

Average Number of Days Below 32F/0C

Years on Record: 65

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		2.7		1.5		0.4		0.1		---		---		---		---		---		---		---		---		0.6

Average Precipitation

Years on Record: 65

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		22.6		4.6		4.3		3.2		1.4		0.8		0.2		---		---		0.3		1.2		2.3		4.2

Average Number of Days With Precipitation

Years on Record: 65

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		65		11		10		9		5		4		2		---		1		2		4		7		10

Most Reported Precipitation in a Month

Years on Record: 65

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		15.3		15.3		12.3		9.6		5.6		3.9		1.6		0.1		1.1		4.5		4.4		8.5		14.6

Least Reported Precipitation in a Month

Years on Record: 65

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		---		0.8		---		---		---		---		---		---		---		---		---		---		0.4

Most Precipitation Reported in a Day

Years on Record: 65

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		4.3		3.3		4.3		3.2		2.3		1.4		1.1		0.1		0.8		2.8		2.8		4.1		3.3

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

Years on Record: 65

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		42		8		7		6		3		2		1		---		---		1		3		4		7

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

Years on Record: 65

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		16		3		3		2		1		1		---		---		---		---		1		2		3

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

Years on Record: 65

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

Heating Degree Days

Years on Record: 65

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		720		220		122		89		35		10		1		---		---		---		5		55		183

Cooling Degree Days

Years on Record: 65

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		148		---		---		1		3		10		27		29		21		40		15		2		---

Growing Degree Days

Years on Record: 65

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		2693.7		---		31.1		102.3		186		279		375		421.6		409.2		414		325.5		150		---

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		5.1		2.2		3.2		4.7		6.1		7.3		8		7.9		7.1		5.7		4.2		2.7		2

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		0.8		1.1		1.3		1.7		1.8		1.8		1.7		1.5		1.2		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		5.6		3.5		4.4		5.7		6.3		6.6		6.9		6.9		6.9		6.6		5.8		4.2		3.4

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		6.7		3.7		4.7		6.2		7.3		8.4		9.5		9.4		8.9		7.9		6.6		4.7		3.6

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		2.2		3.2		4.7		6.1		7.3		8		7.9		7.1		5.7		4.2		2.7		2

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		0.9		1.2		1.6		1.9		2.4		2.2		2		1.7		1.4		1.2		0.9		0.8

Maximum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		6.5		4.6		6.1		7.3		7		7.3		7.3		7.5		7.5		7.2		6.4		5.3		5.1

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		5.2		7.6		9		8.6		10.1		10.7		10.9		10.1		9		7.4		6.3		6.1

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		4.3		1.6		2.2		3.9		5.2		5.4		7		7.2		6.6		5.4		3.7		2.2		1.7

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		0.7		0.7		0.9		1.4		1.5		1.5		1.3		1.2		1		0.9		0.7		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		4.6		2.2		2.7		4.5		5.3		4.9		6.1		6.3		6.5		6.1		5		3.2		2.6

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		1.9		2.3		4.2		5.3		4.6		7.4		7.9		7.9		7		5.3		3.2		2.5