PORT HEIDEN, ALASKA

Average Temperature

Years on Record: 6

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		2		-4		-4		-3		---		4		8		10		11		8		3		-1		-3

Average High Temperature

Years on Record: 6

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		5		-1		-1		---		2		8		12		13		14		11		6		2		---

Average Low Temperature

Years on Record: 6

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		-1		-8		-8		-7		-3		---		4		7		8		5		---		-4		-7

Highest Recorded Temperature

Years on Record: 6

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		27		7		9		12		10		18		21		22		27		20		13		10		9

Lowest Recorded Temperature

Years on Record: 6

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		-28		-28		-25		-23		-20		-10		-1		---		---		---		-11		-26		-24

Average Precipitation

Years on Record: 6

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		430		10		10		10		10		20		30		40		70		60		70		30		30

Average Precipitable Water

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm.		1.2		0.8		0.8		0.7		0.9		1.2		1.7		2.2		2.1		1.6		1.1		0.9		0.8

Average Number of Rainy Days

Years on Record: 6

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		36		2		1		1		1		2		2		3		5		4		5		2		3

Average Snowfall

Years on Record: 5

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		82		12		9		12		8		2		---		---		---		---		4		8		21

Average Relative Humidity

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		65.8		61.2		65.6		60.6		64.2		63.7		67.5		74.1		70.5		66.7		67.7		64.8		64.1

Heating Degree Days

Years on Record: 6

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		6397.2		723.3		651.3		688.9		566.7		430.6		300		241.1		215.3		291.7		465		583.3		688.9

Growing Degree Days

Years on Record: 6

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		60.3		---		---		---		---		---		---		17.2		43.1		---		---		---		---

Average Length of Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		13.1		8.4		10.3		12.6		15.1		17.5		18.9		18.1		15.8		13.3		10.9		8.8		7.7

Average Total Sky Cover

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		74		67.9		65		68.4		73.9		73.2		78.5		83		80.4		78.8		75.6		72		71

Average Opaque Sky Cover

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		69.9		61.8		59.2		62.9		68.9		69		74.8		82		77.9		75.7		71.6		68.7		66.4

Average Wind Speed

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
km/h		20.6		21.2		23		21.9		20.4		19.7		19.2		17.1		19.1		20.5		20.3		22.2		23.2

Average Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		10.2		2		4.6		9.8		15.6		19.4		20.2		17.4		13.8		10.1		5.7		2.5		1.5

Average Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		5.4		1.4		2.8		5.3		7.3		9.4		9.9		9.4		8		5.5		3.4		1.7		1

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		11.6		4.8		8.2		13.9		17.3		17.8		17.3		15.4		13.6		12.4		9		5.1		3.8

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		11.2		4.2		7.1		12.5		17.8		19.1		19		15.1		11.8		11.4		8.2		4.5		3.7

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		10.2		2		4.6		9.8		15.6		19.4		20.2		17.4		13.8		10.1		5.7		2.5		1.5

Maximum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		5.7		1.5		3.1		5.7		7.7		9.7		10		9.5		8.1		5.8		3.8		1.9		1.1

Maximum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		14		5.5		10		16.9		21		21.6		22		18.1		16.5		15		11		6.6		4.5

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		15		4.8		8.7		15.2		23.2		25.9		29.2		20.6		16.8		14.8		10.3		6		4.4

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		8.6		1.8		4.1		7.8		13.1		15.5		16.9		14.8		11.9		8.4		5		2.2		1.4

Minimum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		5.2		1.3		2.6		4.8		7.2		9.3		9.7		9.2		7.7		5.1		3.1		1.5		1

Minimum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		9.4		4.1		6.8		10.2		14		14		14.5		13		11.4		9.7		7.5		4.1		3.4

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		3.6		6		8.4		12.6		11.8		13.1		10.5		8.3		8.1		6.7		3.6		3.3