HAYWARD, CALIFORNIA

Average Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		16.2		10.2		10.7		11.8		14.2		16.9		20.6		23.4		24		21.9		17.8		13.1		10.3

Average High Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		25.7		18		18.6		20.2		23.4		26.4		31.1		34.6		35.2		32.6		27.8		22.1		18.6

Average Low Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		6.7		2.3		2.7		3.3		5		7.5		10.1		12.2		12.7		11.1		7.8		4.1		2.1

Highest Recorded Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		38.6		22.3		22.9		25.5		28.5		31.2		34.7		36.7		38.6		36.5		31.9		26.2		22.8

Lowest Recorded Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		-0.3		0.4		0.5		-0.3		2.1		5.3		7.6		10.1		9.4		8.6		5.7		0.8		0.1

Average Number of Days Above 90F/32C

Years on Record: 69

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		43.6		---		---		---		---		0.2		5.4		16.6		14.6		5.9		0.9		---		---

Average Number of Days Below 32F/0C

Years on Record: 69

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		143.6		25.7		21.2		20.5		11.9		4.6		0.8		0.1		0.1		2.3		10.2		20.7		25.3

Average Number of Days Below 0F/-17C

Years on Record: 69

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

Average Precipitation

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		355		76		89		77		16		6		---		---		3		7		9		31		41

Average Number of Days With Precipitation

Years on Record: 69

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		57		9		9		9		6		3		2		---		---		2		3		6		8

Most Reported Precipitation in a Month

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		403		228		302		403		72		88		5		3		51		76		48		99		173

Least Reported Precipitation in a Month

Years on Record: 30

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

Most Precipitation Reported in a Day

Years on Record: 69

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		213.6		118.9		104.7		95		114.8		53.1		35.3		9.4		16		87.4		78.2		213.6		160.3

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

Years on Record: 69

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		47		8		8		7		5		2		1		---		---		1		3		5		7

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

Years on Record: 69

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		25		5		5		4		2		1		---		---		---		---		1		3		4

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

Years on Record: 69

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		13		3		3		2		1		---		---		---		---		---		1		1		2

Average Precipitable Water

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm.		1.6		1.4		1.4		1.4		1.4		1.7		1.8		2		1.9		1.8		1.6		1.5		1.4

Average Snowfall

Years on Record: 69

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		98.5		30		18.3		19.3		9.7		0.2		---		---		---		0.8		---		2.5		17.8

Average Snow Cover

Years on Record: 29

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

Most Snow Reported in a Month

Years on Record: 69

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		149.9		149.9		127		111.8		106.7		2.5		---		---		---		27.9		---		38.1		101.6

Average Relative Humidity

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		72.9		77		77		73.1		70.2		72.1		71.2		73.3		73.1		71.1		69.6		73.3		74.3

Heating Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		1390		253.9		213.9		207.8		139.4		78.9		16.1		2.2		1.1		11.7		53.9		162.8		248.3

Cooling Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		632.8		---		---		3.9		15		35.6		83.3		158.9		175.6		117.8		37.2		5.6		---

Growing Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		2298.3		5.2		18.8		55.1		126.7		215.3		316.7		415.1		434		356.7		242.8		93.3		10.3

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 Total Sky Cover

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		45		54.8		58		48.3		44.5		45.4		38.3		42.5		41.1		35.8		35		43.9		52

Average Opaque Sky Cover

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		42.6		50.6		54.4		45.8		43.2		42.8		37		40.9		39.7		34.1		33.1		40.7		48.2

Average Wind Speed

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
km/h		10.9		8.2		9.4		11.1		13.4		13.8		14		13.2		12.2		10.5		8.9		7.6		8.6

Average Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		18.5		8.7		11.9		16.9		21.4		25.5		28.7		28.8		25.6		21.1		15.5		10		8

Average Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		4.5		2.8		3.7		4.8		6.2		6.7		6.3		5.7		5.1		4.1		3.3		2.9		2.5

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		14.4		16.5		20.5		22		23.3		24.7		25.4		25.2		24.4		21.9		16.1		14.2

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		25.1		15.8		18.2		22.4		24.8		28.9		33.9		35.2		32.5		29.6		25.2		18.1		15.9

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		18.5		8.7		11.9		16.9		21.4		25.5		28.7		28.8		25.6		21.1		15.5		10		8

Maximum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		5.5		3.1		4.2		5.5		7.2		8.3		8.1		7.2		6.3		5.4		4.1		3.3		2.8

Maximum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		24.3		18.6		20.2		24.8		25.6		27.5		27.3		28		28.2		27		25.7		19.4		19.3

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		31.9		22.1		24.1		29.6		32.1		39.4		41.4		42.5		39.7		34.5		31.4		23.1		23.4

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		15.8		7.3		9.6		14.7		17.3		20.6		24.4		25.6		23.1		18.1		13.4		8.6		6.5

Minimum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		3.4		2.2		3		3.7		4.9		4.5		4.7		4		3.5		3.2		2.3		2.4		1.7

Minimum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		17.2		11.3		12.3		17.2		17.4		18.9		21.2		22.7		22.6		20.4		18.2		13		10.6

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		18.4		11.3		11.8		17		16.4		19		24.8		28		26.8		22.3		19.3		13.5		10.7