WILLOW, ALASKA

Average Temperature

Years on Record: 13

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		-17		-13		-11		-5		---		-17		-17		-17		-17		-17		-17		-10		-15

Average High Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		6.6		-8		-4.4		2.6		7.9		15		19.5		21.5		19.8		14.6		5.1		-5.3		-9.4

Average Low Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		-6.2		-18.4		-18.2		-13.1		-6.2		0.4		5.6		8.4		6.2		0.7		-6.1		-15.7		-19

Highest Recorded Temperature

Years on Record: 13

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		31.1		10.6		8.3		10		25.6		-17.8		31.1		30.6		29.4		22.2		16.7		8.9		7.8

Lowest Recorded Temperature

Years on Record: 13

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		-45.6		-45.6		-45		-33.3		-8.3		-17.8		-1.1		0.6		-3.3		-12.8		-29.4		-36.1		-40

Average Number of Days Below 32F/0C

Years on Record: 13

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		138.9		29.2		25.7		28.8		---		---		---		---		---		---		---		27.3		27.9

Average Number of Days Below 0F/-17C

Years on Record: 13

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		60.6		14.5		11.3		8.7		---		---		---		---		---		---		---		11.1		15

Average Precipitation

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		661		34		25		25		21		31		57		77		86		111		98		48		48

Average Number of Days With Precipitation

Years on Record: 13

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		92		6		6		5		5		7		8		8		9		10		11		9		8

Most Reported Precipitation in a Month

Years on Record: 13

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		176		73		48		100		85		42		137		124		153		176		130		146		115

Least Reported Precipitation in a Month

Years on Record: 13

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		---		5		6		---		---		5		5		24		7		47		41		8		10

Most Precipitation Reported in a Day

Years on Record: 13

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		66.3		35.6		26.2		26.2		26.9		19.1		28.2		29.2		37.9		32.3		34.5		66.3		44.5

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

Years on Record: 13

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		51		3		3		3		2		2		5		5		5		6		7		5		5

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

Years on Record: 13

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		16		---		1		1		1		---		2		2		2		2		3		1		1

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

Years on Record: 13

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

Average Snowfall

Years on Record: 13

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		204.5		25.1		25.4		28.4		13.2		---		---		---		---		---		19.8		44.2		48.3

Average Snow Cover

Years on Record: 13

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		22		48		58		55		33		---		---		---		---		---		2		20		43

Most Snow Reported in a Month

Years on Record: 13

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		166.4		54.6		68.6		102.9		73.7		---		---		---		---		---		45.7		111.8		166.4

Heating Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		7428.9		978.2		837.3		730.2		525		328.9		174.2		105.1		165.3		320.8		583		865.8		1008.4

Growing Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		322.1		---		---		---		---		---		75.8		153.3		93		---		---		---		---

Average Length of Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		13.5		7.4		9.8		12.7		15.8		19.1		22		20.2		16.7		13.6		10.6		8		6.5

Average Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		9.2		1		3.4		7.9		13.8		18.1		20.2		17.2		13.5		9		4.7		1.6		0.4

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		0.7		2.2		4.6		7		8.9		10		9.4		7.9		5		2.9		1.1		0.3

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		10.9		3.4		7.2		12.6		17.4		16.9		17.2		15.2		13.5		11.8		8.9		4.8		1.7

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		10.9		3.1		6.3		10.9		16.3		19.4		21.1		16.4		12.7		11.3		7.8		4.1		1.1

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		9.2		1		3.4		7.9		13.8		18.1		20.2		17.2		13.5		9		4.7		1.6		0.4

Maximum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		5.2		0.8		2.6		4.9		7.1		9		10		9.5		8		5.4		3.2		1.2		0.3

Maximum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		13		4.1		9.7		15.2		19.7		20		19.3		18		18.1		14.2		10.6		5.7		2

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		14.2		3.8		8.6		13.8		19.8		23.9		25.9		22.6		20.9		14.4		9.4		5		1.7

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		7.6		0.9		2.9		6.8		11.5		14.8		16.6		14.2		12.2		6.9		3.2		1.2		0.4

Minimum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		4.8		0.6		1.9		4.2		7		8.8		9.9		9.1		7.8		4.5		2.2		0.9		0.3

Minimum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		8.5		2.8		6		10.2		13.6		13.5		14.1		12.3		11.9		8.1		5.3		3.2		1.4

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		7.4		2.5		5		8.2		10.9		12.7		14		10.4		9.9		6.6		4.3		2.6		1.1