BLATTEN, SWITZERLAND

Average Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		2.8		-6.4		-5.1		-2.3		1.6		6.3		9.7		12.3		11.3		8.6		4.2		-1.4		-5.3

Average High Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		10.4		1.2		3.1		5.4		8.4		13		16.9		20.1		19.1		16.8		12.7		6.1		1.5

Average Low Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		-0.3		-7.7		-7.5		-5.1		-1.7		2.4		5.1		7.2		6.9		5		1.9		-3.3		-6.6

Average Number of Days Above 86F/30C

Years on Record: 30

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

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		7.2		---		---		---		---		---		0.5		3.9		2.4		0.4		---		---		---

Average Number of Days Below 0F/-17C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		44.6		13.1		8.3		3.9		0.6		---		---		---		---		---		0.1		4.8		13.8

Average Precipitation

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		1091		106		107		101		69		76		88		82		93		59		89		105		117

Average Number of Days With Precipitation

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		109.7		11		9.5		10.8		9.5		11.1		11		10.8		11.3		7.6		8.3		9.4		10.4

Average Number of Days With Frost

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		141.7		30.5		26.9		27.5		19.1		5.6		1.1		0.1		0.1		1.4		8.8		22.8		28.3

Average Number of Days With Ice

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		23.2		10.1		5.9		2.8		0.8		---		---		---		---		---		0.5		3.7		9.5

Heating Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		5361.2		669.1		579.9		564.1		450		329.8		220		144.7		165.3		223.3		341.9		507.5		647.6

Growing Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		263.4		---		---		---		---		---		30		113.7		93		26.7		---		---		---

Average Vapor Pressure

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mbar		6.3		3.1		3.2		3.8		4.9		6.9		8.9		10.2		10.3		9		6.9		4.6		3.5

Average Length of Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		12.8		9.7		10.9		12.5		14.2		15.6		16.4		16		14.6		13		11.4		10		9.2

Average Percent of Cloud Cover

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Percent		43		44		43		46		47		49		46		40		43		38		36		42		41

Average Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		12.6		5.1		8.1		12		15.1		18.7		20.7		20.9		18.1		13.5		8.8		5.5		4.1

Average Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		6		3		4.2		6.1		6.7		8.9		9.4		9		8		6.4		4.4		3.2		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		13.7		8.6		11.9		14.4		15.6		17.1		18		18.6		17.9		15.2		11.7		8.6		6.9

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		12.9		7.3		10.6		12.5		15		16.1		18.3		19.3		17.4		13.9		10.8		7.5		6.2

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		12.6		5.1		8.1		12		15.1		18.7		20.7		20.9		18.1		13.5		8.8		5.5		4.1

Maximum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		6.4		3.5		4.8		6.6		7.3		9		9.5		9.2		8.2		7.1		5.4		3.6		3

Maximum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		17		11.3		14.8		17.5		21.3		19.8		20.3		20.8		20.7		20		17.3		11		8.9

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		17.2		9.9		13.6		16.3		22.8		21.1		22.8		23.5		22.1		19.8		16.9		9.8		8.3

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		9.8		4.2		6.3		8.6		11.1		14.8		16.3		18.2		14.9		11.3		5.5		2.8		3

Minimum 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		2.6		3.6		5.4		6.2		8.7		9.2		8.9		7.9		6		3.4		2.1		2

Minimum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		10.2		6.8		9.1		9.7		11.2		13.5		14.3		16.2		14.4		12.5		6.8		3.6		4.4

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		8.1		5.6		7.5		6.8		8.8		9.8		11.1		14.6		11.6		10.4		5.4		2.3		3.5