SAINT JOHN HARBOR, ALASKA

Average Temperature

Years on Record: 6

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		43.3		30.2		35.1		---		42		46.8		50.8		55.2		55.9		51.8		45.1		35.7		35.5

Average High Temperature

Years on Record: 6

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		49.2		34.3		40.1		---		48.4		54.4		57.3		62.9		64		58.4		49.9		40		39.5

Average Low Temperature

Years on Record: 6

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		37.5		26		30		---		35.6		39.3		44.3		47.6		47.7		45.2		40.2		31.3		31.4

Highest Recorded Temperature

Years on Record: 6

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		86		50		58		71		72		71		86		83		70		60		57		50		86

Lowest Recorded Temperature

Years on Record: 6

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		-1		-1		3		28		32		34		41		39		34		28		17		4		-1

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
in		66		6.3		5.8		4.3		4.2		3.2		4		4.5		3		7.1		11		5.7		7.1

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
in		19		11.3		9.1		6.2		4.7		5.3		4.6		6.2		4.1		8.6		19		7.3		10.9

Least Reported Precipitation in a Month

Years on Record: 6

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		1.6		2.6		2.8		1.6		3.6		1.7		3		2.6		1.6		5.4		5.4		2.5		4

Most Precipitation Reported in a Day

Years on Record: 6

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		3.8		2.2		1.6		1.5		1.1		0.6		1.2		1.1		1.6		2		3.8		1.9		2

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
in		45.7		16.8		5.4		5.3		0.6		---		---		---		---		---		---		4.5		13.1

Most Snow Reported in a Month

Years on Record: 6

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		26.8		26.8		8		11		1		---		---		---		---		---		---		11.4		14

Heating Degree Days

Years on Record: 6

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		4356		770		562		583		389		255		132		38		32		101		308		580		606

Cooling Degree Days

Years on Record: 6

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

Growing Degree Days

Years on Record: 6

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		419.5		---		---		---		---		24.8		156		182.9		55.8		---		---		---		---

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
kWh/m2		2.5		0.5		1.2		2.3		3.7		4.6		4.9		4.4		3.7		2.5		1.4		0.7		0.3

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		0.4		0.8		1.4		2		2.6		2.7		2.6		2.2		1.5		0.9		0.5		0.2

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		2.7		1.1		2		2.9		3.9		4.2		4.2		3.9		3.6		2.9		2.1		1.3		0.6

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		2.4		0.9		1.7		2.4		3.4		3.8		3.9		3.4		2.9		2.4		1.8		1.1		0.5

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		2.5		0.5		1.2		2.3		3.7		4.6		4.9		4.4		3.7		2.5		1.4		0.7		0.3

Maximum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.5		0.4		0.9		1.5		2.1		2.6		2.8		2.6		2.2		1.6		0.9		0.5		0.3

Maximum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		3.5		1.4		2.9		4		5.1		5.2		5.3		4.5		4.4		4.1		2.4		1.7		0.8

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		3.5		1.2		2.5		3.5		5.4		5.7		6.2		4.6		4.2		4		2.1		1.6		0.6

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		2		0.4		0.9		1.9		3.1		3.9		4.1		3.5		2.8		1.9		1.1		0.5		0.3

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		0.3		0.6		1.3		2		2.5		2.7		2.5		2		1.3		0.7		0.4		0.2

Minimum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		2.1		0.8		1.5		2.2		3.1		3.5		3.5		3.1		2.7		2		1.4		0.8		0.4

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.5		0.6		1.1		1.6		2.3		2.6		2.6		1.9		1.7		1.3		1.1		0.6		0.3