SDE BOKER, ISRAEL

Average High Temperature

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
°lF		76.5		58.6		60.6		66.4		77.2		83.7		88.2		90.9		90.7		87.3		81		70.9		62.2

Average Low Temperature

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
°lF		52.9		39.9		40.8		44.8		50.9		56.3		60.8		64.6		65.5		63		57.6		48.7		41.9

Highest Recorded Temperature

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
°lF		104.7		80.6		84.2		91.4		101.5		104.4		103.6		104.2		104.7		103.1		96.8		87.1		84.2

Lowest Recorded Temperature

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
°lF		25.5		25.5		29.7		32		34.3		41.9		49.6		54.5		54.5		52.3		44.4		32		28.9

Average Number of Days Above 86F/30C

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		116.7		---		---		0.3		5.5		11.5		19.4		27.5		29.1		17.2		6.1		0.1		---

Average Number of Days Below 40F/4C

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		60.5		18.8		14.8		8.8		1.7		---		---		---		---		---		---		2.6		13.8

Average Precipitation

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		3.9		1		0.7		0.7		0.3		---		---		---		---		---		0.1		0.3		0.8

Most Precipitation Reported in a Day

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		2.1		2.1		1.3		1		1.2		0.2		0.1		---		---		---		0.4		0.6		1.7

Average Number of Rainy Days

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		28.3		6.2		5.6		4.6		1.9		0.7		---		---		---		0.1		0.9		2.9		5.4

Most Rain Reported in a Month

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		4.2		3.2		2.8		2.5		2.3		0.3		0.1		---		---		0.1		0.6		2.2		4.2

Avg. No. of Days w/Rain Above 0.1in/2mm

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		17.1		3.8		3.7		3		1.2		0.3		---		---		---		---		0.5		1.6		3

Average Morning Relative Humidity

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		64.3		77		74		67		53		49		51		56		65		69		68		67		76

Average Evening Relative Humidity

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		35.8		49		44		39		28		26		27		28		31		35		36		40		47

Heating Degree Days

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		1769.7		488.3		404		291.4		28.5		---		---		---		---		---		---		156		401.5

Cooling Degree Days

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		1679.2		---		---		---		---		155		285		395.3		406.1		304.5		133.3		---		---

Growing Degree Days

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		5411.7		---		19.8		173.6		421.5		620		735		860.3		871.1		754.5		598.3		294		63.6

Average Length of Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		12.6		10.9		11.5		12.4		13.4		14.2		14.6		14.4		13.6		12.7		11.8		11		10.6

Average Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		5.2		2.9		3.5		4.8		6.1		7		7.8		7.5		6.7		5.7		4.2		3.2		2.6

Average Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.5		1.1		1.3		1.6		1.9		2		1.9		1.9		1.8		1.6		1.4		1.1		1

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		5.4		3.9		4.4		5.3		6		6.4		6.7		6.7		6.4		6.1		5.1		4.2		3.7

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		4		4.3		5.3		6.4		7.4		8.7		8.3		7.3		6.7		5.2		4.5		3.9

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		5.2		2.9		3.5		4.8		6.1		7		7.8		7.5		6.7		5.7		4.2		3.2		2.6

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		1.4		1.8		2		2.3		2.2		2.1		2		1.7		1.5		1.2		1

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		4.4		5.3		6.6		6.5		7		7.2		7.1		6.9		6.7		5.6		4.8		4.4

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		7.2		4.9		5.6		7.6		7.4		9		9.9		9.4		8.3		7.8		6.1		5.4		4.9

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		2.8		4.2		5.7		6.2		7		6.9		6.1		5.2		3.9		2.5		2.3

Minimum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.4		1		1.2		1.3		1.7		1.7		1.6		1.6		1.6		1.3		1.3		1		0.9

Minimum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		4.8		3.5		3.3		4.6		5.6		5.6		6.1		6.2		5.9		5.5		4.6		3.1		3

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		4.8		3.5		2.7		4.1		5.7		5.7		7.1		7.1		6.2		5.6		4.4		2.8		2.9