SAINT JOHN HARBOR, ALASKA

Average Temperature

Years on Record: 6

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		6.3		-1		1.7		---		5.6		8.2		10.4		12.9		13.3		11		7.3		2.1		1.9

Average High Temperature

Years on Record: 6

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		9.6		1.3		4.5		---		9.1		12.4		14.1		17.2		17.8		14.7		9.9		4.4		4.2

Average Low Temperature

Years on Record: 6

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		3.1		-3.3		-1.1		---		2		4.1		6.8		8.7		8.7		7.3		4.6		-0.4		-0.3

Highest Recorded Temperature

Years on Record: 6

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		30		10		14.4		21.7		22.2		21.7		30		28.3		21.1		15.6		13.9		10		30

Lowest Recorded Temperature

Years on Record: 6

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		-18.3		-18.3		-16.1		-2.2		---		1.1		5		3.9		1.1		-2.2		-8.3		-15.6		-18.3

Average Number of Days Below 32F/0C

Years on Record: 6

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		104		26		21.5		16.4		6		1.8		---		---		---		---		0.8		15		16

Average Number of Days Below 0F/-17C

Years on Record: 6

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		0.4		0.2		---		---		---		---		---		---		---		---		---		---		0.2

Average Precipitation

Years on Record: 6

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		1677		159		147		109		107		82		101		113		75		181		279		145		180

Average Number of Days With Precipitation

Years on Record: 6

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		226		18		17		19		20		18		18		18		13		17		24		20		24

Most Reported Precipitation in a Month

Years on Record: 6

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		483		287		231		159		120		135		117		156		103		218		483		185		277

Least Reported Precipitation in a Month

Years on Record: 6

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		41		66		71		41		93		43		75		65		42		136		138		65		102

Most Precipitation Reported in a Day

Years on Record: 6

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		97		54.9		41.7		39.1		26.9		16.3		30.7		27.4		40.4		51		97		49		49.8

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

Years on Record: 6

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		157		13		14		12		13		13		11		12		8		13		18		14		16

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

Years on Record: 6

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		43		4		5		3		2		1		2		3		2		6		8		3		4

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

Years on Record: 6

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		10		1		1		1		---		---		---		---		---		2		3		1		1

Average Snowfall

Years on Record: 6

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		116.1		42.7		13.7		13.5		1.5		---		---		---		---		---		---		11.4		33.3

Most Snow Reported in a Month

Years on Record: 6

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		68.1		68.1		20.3		27.9		2.5		---		---		---		---		---		---		29		35.6

Heating Degree Days

Years on Record: 6

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		2420		427.8		312.2		323.9		216.1		141.7		73.3		21.1		17.8		56.1		171.1		322.2		336.7

Cooling Degree Days

Years on Record: 6

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		2.2		---		---		---		---		---		---		1.7		0.6		---		---		---		---

Growing Degree Days

Years on Record: 6

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		233.1		---		---		---		---		13.8		86.7		101.6		31		---		---		---		---

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		17.4		18.7		17.9		15.7		13.3		10.9		8.9		7.8

Average Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		9		1.8		4.3		8.1		13.1		16.6		17.5		16		13.1		8.9		5		2.5		1.1

Average Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		5.3		1.3		2.7		4.9		7.3		9.3		9.8		9.3		7.9		5.3		3.1		1.7		0.9

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		9.8		3.8		7.3		10.6		13.9		15.1		15.1		14		12.8		10.3		7.4		4.7		2.2

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		8.5		3.1		6.2		8.5		12.3		13.8		14.2		12.4		10.5		8.7		6.4		4.1		1.7

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		9		1.8		4.3		8.1		13.1		16.6		17.5		16		13.1		8.9		5		2.5		1.1

Maximum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		5.5		1.5		3.3		5.4		7.4		9.4		10		9.5		8.1		5.9		3.4		1.9		0.9

Maximum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		12.5		4.9		10.6		14.5		18.4		18.6		19		16.2		15.8		14.8		8.6		6.2		2.7

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		12.5		4.2		9.1		12.4		19.4		20.4		22.1		16.6		15.3		14.4		7.7		5.6		2.1

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		7.3		1.5		3.3		6.8		11.1		13.9		14.7		12.6		10.2		6.7		3.8		1.8		0.9

Minimum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		4.9		1.1		2.3		4.6		7.1		9		9.6		8.9		7.2		4.7		2.6		1.4		0.8

Minimum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		7.5		2.8		5.2		8		11.3		12.5		12.7		11		9.6		7.1		5.2		3		1.6

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		5.3		2.1		3.9		5.9		8.4		9.2		9.4		6.8		5.9		4.8		4.1		2.3		1.1