SAN NICOLAS ISLAND, CALIFORNIA

Average Temperature

Years on Record: 44

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		15.3		13.1		12.9		13.3		13.8		14.9		15.8		17.2		17.9		18.2		17.3		15.8		13.9

Average High Temperature

Years on Record: 44

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		18.7		16.3		15.8		16.2		17.3		18.2		19.1		20.6		21.5		21.7		20.9		19.2		16.9

Average Low Temperature

Years on Record: 44

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		12.1		10.1		10.1		10.3		10.4		11.7		12.5		13.7		14.4		14.7		13.7		12.5		11

Highest Recorded Temperature

Years on Record: 44

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		39.4		28.3		28.3		25.6		35.6		37.8		32.8		32.8		35		39.4		37.8		31.1		27.8

Lowest Recorded Temperature

Years on Record: 44

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		2.2		2.2		2.8		3.3		4.4		5		8.3		6.7		7.8		8.9		4.4		5.6		3.3

Average Number of Days Above 90F/32C

Years on Record: 20

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

Average Number of Days Above 70F/21C

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		108		4		3		2		4		5		9		17		20		19		14		7		4

Average Precipitation

Years on Record: 44

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		218		42		51		34		15		1		---		---		2		4		7		15		47

Average Number of Days With Precipitation

Years on Record: 44

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		36		6		7		5		3		1		1		---		1		1		2		3		6

Most Reported Precipitation in a Month

Years on Record: 44

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		145		140		118		145		65		12		3		2		28		56		22		78		144

Least Reported Precipitation in a Month

Years on Record: 44

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		---		---		2		---		---		---		---		---		---		---		---		---		---

Most Precipitation Reported in a Day

Years on Record: 44

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		69.1		47.8		49.3		69.1		24.4		7.4		3.3		2.3		27.7		42.4		18.5		58.4		56.4

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

Years on Record: 44

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		19		4		4		3		2		---		---		---		---		---		1		1		4

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

Years on Record: 44

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

Average Number of Rainy Days

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		34		5		5		5		2		2		2		1		1		2		2		3		4

Average Morning Relative Humidity

Years on Record: 17

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		81		75		79		81		80		81		83		86		87		84		81		74		73

Average Evening Relative Humidity

Years on Record: 17

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		65		63		67		67		64		65		65		66		67		64		65		62		63

Average Dew Point

Years on Record: 9

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		10		6		8		8		8		10		11		13		14		13		12		8		6

Heating Degree Days

Years on Record: 44

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		89.4		23.9		19.4		17.8		9.4		1.7		---		---		---		---		0.6		2.2		14.4

Cooling Degree Days

Years on Record: 44

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		89.4		1.1		0.6		0.6		2.2		4.4		2.8		9.4		16.7		24.4		18.3		7.2		1.7

Growing Degree Days

Years on Record: 44

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		2060.4		96.4		83.2		103.3		115		153.3		173.3		222.2		246.3		245		227.3		175		122.3

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		14.4		14.8		14.6		13.8		12.8		11.7		10.9		10.4

Average Number of Days With Fog

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		116		7		8		7		6		10		12		16		14		12		10		7		7

Average Number of Days With Smoke/Haze

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		93		3		4		4		5		10		11		14		13		11		9		5		4

Average No. of Days With Vision Obstruction

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		144		9		9		9		9		13		15		19		17		15		12		8		9

Average Wind Speed

Years on Record: 11

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
km/h		20		20		19		25		25		25		22		19		19		17		17		19		19

Average Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		18.7		11.6		14.7		19.4		24.1		25.1		24.3		23.8		22.8		19.6		15.6		13.1		10.9

Average Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		5.2		3		3.9		4.8		5.6		7.1		8.1		7.8		6.8		5.6		4.4		3		2.7

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		20.7		17.5		19.8		22.5		24.3		22.9		21.2		21.2		21.9		21.3		19.8		19.2		17.3

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		23.5		20.3		21.7		25.2		28.8		27		23.9		23.6		24.4		23.1		21.3		22.8		20.4

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		18.7		11.6		14.7		19.4		24.1		25.1		24.3		23.8		22.8		19.6		15.6		13.1		10.9

Maximum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		6.2		3.7		4.5		6		6.8		8.6		9		8.8		7.9		6.5		5.1		3.7		3.1

Maximum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		23.8		20		24.1		25.7		26.7		26.4		23.9		24.3		24.1		24.2		23.3		21.7		21.2

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		29.5		24.4		28.7		31		34.1		35.6		30.6		31.1		28.9		28.5		27.1		27.1		26.8

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		15.6		9.4		12.9		15.9		21.1		19.5		20		19.4		18.6		16.4		12.9		10.9		9.6

Minimum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		4.2		2.5		2.8		3.8		4.5		5.3		6.9		6.5		5.9		4.6		3.5		2.3		1.8

Minimum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		16.9		13.1		16.7		17.8		21.1		17.9		17.7		17.5		17.9		17.4		15.7		15.2		14.6

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		16.5		13.5		16.9		17.1		22.3		16.2		16.1		15.7		16.4		16.2		14.8		16.3		16.1