TANANA, ALASKA

Average Temperature

Years on Record: 57

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		23		-12		-4		5		24		44		56		58		53		41		24		1		-10

Average High Temperature

Years on Record: 57

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		33		-4		5		18		36		56		68		70		64		51		31		8		-3

Average Low Temperature

Years on Record: 57

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		14		-20		-13		-7		12		32		44		47		42		32		17		-6		-17

Highest Recorded Temperature

Years on Record: 56

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		92		40		45		53		70		84		91		92		90		78		67		42		46

Lowest Recorded Temperature

Years on Record: 57

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		-76		-76		-68		-57		-40		-14		23		29		18		3		-27		-55		-68

Average Number of Days Below 32F/0C

Years on Record: 14

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		229		28		30.6		27.6		26.4		10.6		2.4		0.3		1.9		12.8		28.7		29.8		30.3

Average Number of Days Below 0F/-17C

Years on Record: 14

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		69.9		17.7		12.8		2.1		0.3		---		---		---		---		3.1		9.8		18.1		6

Average Precipitation

Years on Record: 54

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in.		13.2		0.7		0.7		0.6		0.2		0.8		1.2		2.3		2.7		1.8		1		0.7		0.6

Average Number of Days With Precipitation

Years on Record: 14

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		133		6		8		7		7		9		13		15		17		16		13		12		10

Most Reported Precipitation in a Month

Years on Record: 14

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		8.9		2		4.1		2.8		2.3		2.2		3.4		3.8		8.9		8.1		3.3		2.8		3.1

Least Reported Precipitation in a Month

Years on Record: 14

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		---		0.2		0.1		0.2		---		0.4		0.5		0.4		1.2		1.5		0.6		0.2		---

Most Precipitation Reported in a Day

Years on Record: 14

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		2		0.5		1.2		1.4		0.6		0.6		1		1.2		2		1.2		0.7		0.8		1

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

Years on Record: 14

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		66		2		4		4		4		4		5		8		9		11		6		5		4

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

Years on Record: 14

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

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

Years on Record: 14

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

Average Precipitable Water

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in.		0.4		0.2		0.2		0.2		0.3		0.4		0.6		0.8		0.7		0.5		0.3		0.2		0.2

Average Number of Rainy Days

Years on Record: 54

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		30.6		2.2		2.1		1.6		0.6		2.2		2.8		4.6		5.1		3.3		2.3		1.8		2

Average Snowfall

Years on Record: 52

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in.		51.9		9.2		8.7		8.1		2.1		0.4		---		---		---		0.8		7.7		6.2		8.7

Most Snow Reported in a Month

Years on Record: 14

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		39		23		31.5		28		33.8		---		---		---		---		11.5		21		39		22.3

Average Dew Point

Years on Record: 12

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		16		-15		-13		-3		15		32		45		50		47		35		16		-4		-14

Heating Degree Days

Years on Record: 14

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		9639		1587		1279		1255		740		341		59		58		137		473		956		1198		1556

Cooling Degree Days

Years on Record: 14

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		29		---		---		---		---		1		10		12		6		---		---		---		---

Growing Degree Days

Years on Record: 57

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		521		---		---		---		---		---		180		248		93		---		---		---		---

Average Length of Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		13.6		6.4		9.4		12.7		16.4		20.5		23		21		17.6		13.8		10.4		7.1		5.2

Average Total Sky Cover

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		61.9		54.5		56.6		50		55.4		59		62.6		67.3		72.9		70.5		71.2		62.7		60.1

Average Opaque Sky Cover

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		52.1		48.8		47		40.8		42.7		46		50.8		55.4		62.7		61.3		63.9		54.8		51.4

Average Wind Speed

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mph		5.7		5.4		6.3		6.4		6.2		6.4		5.6		5.3		5.2		5.5		5.7		5.2		5.2

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		0.1		0.7		2		3.8		5.3		5.9		5.2		3.7		2.3		1.1		0.2		---

Average Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.3		0.1		0.5		1.2		1.9		2.5		2.7		2.6		2.2		1.3		0.7		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		2.9		0.5		1.6		3.5		5		5		5		4.5		3.7		3.2		2.2		0.9		---

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		3.2		0.4		1.4		3.1		5		6.5		7.3		5.7		3.6		3.1		1.9		0.8		---

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		0.1		0.7		2		3.8		5.3		5.9		5.2		3.7		2.3		1.1		0.2		---

Maximum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		---		0.1		0.5		1.3		2		2.5		2.7		2.6		2.2		1.5		0.7		0.2		---

Maximum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		---		0.7		1.9		4.2		5.7		5.6		5.6		5.2		4.7		4.3		2.5		1.1		---

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		---		0.5		1.7		3.9		6.1		7.9		8.8		7.4		5.4		4.6		2.3		1		---

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		2.1		0.1		0.6		1.7		3.2		4.3		5.1		4.5		3		1.9		0.9		0.2		---

Minimum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		---		0.1		0.4		1.1		1.9		2.4		2.6		2.6		2.1		1.2		0.6		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		---		0.4		1.2		2.7		3.9		3.9		4.3		3.9		2.9		2.5		1.7		0.7		---

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		---		0.4		1		2.2		3.3		4.2		5.9		4.3		2.2		2.2		1.4		0.6		---