CHULA VISTA, CALIFORNIA

Average Temperature

Years on Record: 93

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		61		53.9		55.1		56.5		58.7		61.6		64		67.8		69.2		67.8		63.7		58.7		54.8

Average High Temperature

Years on Record: 93

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		68.5		64.1		64.5		64.7		65.9		67.2		68.9		72.5		74.1		74		71.7		69		65.1

Average Low Temperature

Years on Record: 93

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		53.5		43.7		45.7		48.3		51.6		56		59.1		63		64.2		61.6		55.8		48.5		44.6

Highest Recorded Temperature

Years on Record: 93

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		108		90		90		95		102		95		97		100		96		108		106		97		86

Lowest Recorded Temperature

Years on Record: 93

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		15		24		27		32		15		41		46		51		53		43		36		26		28

Average Number of Days Above 90F/32C

Years on Record: 93

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		1.8		---		---		0.1		0.1		0.1		0.1		0.1		0.2		0.6		0.4		0.2		---

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		41.4		2.1		1.7		1.6		2		1.1		1.5		4.9		7.5		9.2		6		3.1		0.9

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		213.6		10.5		8.3		8.4		10.5		13.5		20.7		29.5		30.5		28.8		26.9		17.1		8.8

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		358.3		29.1		26.6		30.2		29.8		31		30		31		31		30		31		29.8		28.8

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		365		31		28		31		30		31		30		31		31		30		31		30		31

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		365		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		360.6		31		28		31		30		31		30		30.2		29.1		28.4		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		241.8		31		27.9		30.8		28.7		23.5		11.1		1.8		1.1		6.5		19.5		28.9		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		109.4		24.7		19.3		14.1		8.1		1.2		0.2		---		---		0.4		1.6		14.9		25.1

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		12		3.9		2		0.6		0.1		---		---		---		---		---		---		0.7		4.7

Average Number of Days Below 32F/0C

Years on Record: 93

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		1		0.5		0.1		---		---		---		---		---		---		---		---		---		0.3

Average Precipitation

Years on Record: 93

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		9.7		1.8		1.9		1.6		0.8		0.2		---		---		0.1		0.2		0.5		1		1.6

Average Number of Days With Precipitation

Years on Record: 93

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		39		6		6		6		4		2		1		---		1		1		2		4		6

Most Reported Precipitation in a Month

Years on Record: 93

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		8.3		8.2		7.8		7.4		4.8		2.7		0.6		0.4		2		2.9		5.1		8.1		8.3

Most Precipitation Reported in a Day

Years on Record: 93

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		3.7		2.1		2.6		2.9		1.8		1.6		0.4		0.4		1.9		1.2		2.9		2.1		3.7

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		19.1		3.6		4.3		3.4		1.8		0.1		0.1		0.1		---		0.3		0.8		1.9		2.7

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

Years on Record: 93

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		20		4		4		4		2		---		---		---		---		---		1		2		3

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

Years on Record: 93

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		5		1		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		6.5		1.4		1.8		1.2		0.5		---		---		---		---		---		0.2		0.6		0.8

Average Precipitable Water

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in.		0.7		0.5		0.5		0.5		0.5		0.7		0.7		1		1.1		0.9		0.7		0.5		0.5

Average Snowfall

Years on Record: 93

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

Most Snow Reported in a Month

Years on Record: 93

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		4.4		---		---		---		---		---		---		---		---		---		---		---		4.4

Average Relative Humidity

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		71.1		65.2		70.3		72.7		71.4		74.6		75.2		76.6		75.9		74.1		69		63.7		63.1

Heating Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		1265		246		205		185		124		60		15		1		---		4		23		134		269

Cooling Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		733		3		3		5		10		23		54		162		208		172		78		14		1

Growing Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		4949		224		219		285		336		428		489		626		673		618		521		330		200

Average Length of Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		12.6		10.7		11.5		12.4		13.5		14.3		14.7		14.5		13.7		12.7		11.8		10.9		10.5

Average Total Sky Cover

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		41		39.6		45.9		45.8		43.9		50.4		47		40.6		33.8		35.5		40.3		32.9		35.6

Average Opaque Sky Cover

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		38.1		35.4		42.1		42.8		42.6		48.7		45.4		37		31.3		33.4		38.6		29.7		31.4

Average Wind Speed

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mph		5.6		5.8		6.2		5.9		6.1		5.9		5.7		5.4		5.1		4.9		5.1		5.3		5.7

Average Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		5.3		3.1		3.9		5.2		6.5		7		7.3		7.2		6.5		5.6		4.4		3.5		2.9

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		0.9		1.2		1.4		1.7		2		2.1		2		1.8		1.5		1.2		0.9		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		5.8		4.6		5.2		6		6.5		6.4		6.4		6.4		6.3		6.1		5.6		5		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		5.3		5.5		6.5		7.5		7.6		7.8		7.7		7.2		6.8		6.2		5.8		5.2

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		5.3		3.1		3.9		5.2		6.5		7		7.3		7.2		6.5		5.6		4.4		3.5		2.9

Maximum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.7		1		1.3		1.7		2		2.2		2.4		2.3		2.1		1.7		1.4		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		6.6		5.3		6.3		6.9		7.5		7.1		7.3		7.1		7.1		6.8		6.9		5.7		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		8.3		6.3		7.3		8.2		9.5		9.2		10.2		9.5		9.1		8.2		8.3		7		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		4.6		2.6		3.3		4.3		5.6		6.2		6.1		6.2		5.8		5.1		3.8		3.1		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		0.8		0.9		1.2		1.3		1.6		1.6		1.6		1.4		1.2		0.8		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		4.9		3.7		4.2		4.7		5.6		5.7		5.3		5.6		5.6		5.5		4.7		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		3.8		4		4.4		5.7		6		5.4		5.8		5.7		5.7		4.7		4.7		4