BIG TUJUNGA RESERVOIR, CALIFORNIA

Average Temperature

Years on Record: 79

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		52.8		44.2		48.6		---		56.8		55.8		58.4		66.9		74.5		73.5		68.1		---		---

Average High Temperature

Years on Record: 79

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		66.3		55		62.8		---		72.6		70.6		72		84.5		93.8		92.4		88.1		---		---

Average Low Temperature

Years on Record: 79

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		39.3		33.4		34.5		---		40.9		41		44.8		49.3		55.2		54.6		48.1		---		---

Highest Recorded Temperature

Years on Record: 79

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		113		79		74		83		90		94		105		110		113		97		---		---		85

Lowest Recorded Temperature

Years on Record: 79

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		22		22		27		32		30		33		40		42		43		38		---		---		25

Average Number of Days Above 90F/32C

Years on Record: 79

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		71		---		---		---		0.5		1		11		23.5		21		14		---		---		---

Average Number of Days Below 32F/0C

Years on Record: 79

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		35		15.5		10		1		3.5		---		---		---		---		---		---		---		5

Average Precipitation

Years on Record: 79

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		26.8		5.5		6.1		4.6		1.9		0.6		0.1		---		0.1		0.4		0.8		2.5		4.1

Average Number of Days With Precipitation

Years on Record: 79

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		36		6		6		6		4		2		---		---		1		1		2		3		5

Most Reported Precipitation in a Month

Years on Record: 79

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		33.4		33.4		22.5		20.6		9.9		7.9		1.4		0.5		1.6		5.3		6.1		24.9		17

Most Precipitation Reported in a Day

Years on Record: 79

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		14.4		14.4		11.2		10.8		3.6		4.2		1.2		0.5		1.2		3.2		5.3		8.5		8.2

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		28.1		4.7		5.5		5		2.3		1.2		0.3		0.2		0.5		1		1.5		2.6		3.3

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

Years on Record: 79

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		28		5		5		5		3		1		---		---		---		1		1		3		4

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

Years on Record: 79

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		12		3		3		2		1		---		---		---		---		---		---		1		2

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		2.7		3.2		2.6		1		0.4		0.1		---		---		0.4		0.5		1.1		2

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

Years on Record: 79

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		8		2		2		1		1		---		---		---		---		---		---		1		1

Average Snowfall

Years on Record: 79

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

Most Snow Reported in a Month

Years on Record: 79

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		13.5		13.5		0.9		0.8		---		---		---		---		---		---		---		---		0.5

Heating Degree Days

Years on Record: 79

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		2911.4		644.8		461.9		255.8		276		204.6		---		---		---		---		187.6		502.5		378.2

Cooling Degree Days

Years on Record: 79

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		708		---		---		---		---		---		57		294.5		263.5		93		---		---		---

Growing Degree Days

Years on Record: 79

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		3546		---		---		209.3		174		260.4		507		759.5		728.5		543		277.5		---		86.8

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		13.5		14.4		14.9		14.6		13.8		12.8		11.7		10.8		10.4

Average Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		5.4		3		3.9		5.3		6.6		7.4		7.7		7.3		6.7		5.7		4.4		3.4		2.8

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		1.9		1.7		1.4		1.1		0.8		0.8

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		5.9		4.7		5.2		6.3		6.7		6.7		6.7		6.4		6.4		6.3		5.8		5.1		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		6.9		5.3		5.7		7.1		8		8.4		8.6		7.9		7.6		7.1		6.4		5.9		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		5.4		3		3.9		5.3		6.6		7.4		7.7		7.3		6.7		5.7		4.4		3.4		2.8

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		1.6		1.9		2.2		2.3		2.3		2		1.7		1.3		1		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		5.3		6.5		7.1		7.3		7.3		7.3		7.3		7.4		7.1		7.2		5.9		5.3

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		8.6		6.3		7.7		8.6		9.3		9.7		10.5		10.1		9.7		8.6		8.7		7.2		6.4

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		4.7		2.5		3.2		4.4		5.9		6.5		6.8		6.3		6.1		5.1		4		3		2.5

Minimum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.1		0.7		0.8		1		1.3		1.5		1.5		1.5		1.3		1.1		0.7		0.7		0.6

Minimum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		5		3.5		4.1		5		5.9		5.9		5.9		5.7		5.9		5.5		5		4.3		3.7

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		5.3		3.6		3.9		4.9		6.3		6.5		6.7		6.1		6.3		5.7		5.1		4.7		4