HAYES RIVER, ALASKA

Average Temperature

Years on Record: 31

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		33.1		13.4		17.6		---		29.8		40.5		53.5		57.6		54.5		45.2		30.6		19		15.1

Average High Temperature

Years on Record: 31

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		42.3		20.8		26.4		---		39.7		50.8		65.2		67.6		64.1		54.2		38.5		26.7		22.3

Average Low Temperature

Years on Record: 31

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		23.9		6		8.5		---		19.9		30.3		41.7		47.7		45		36.1		22.7		11.4		8

Highest Recorded Temperature

Years on Record: 31

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		89		49		53		70		81		89		87		85		76		58		44		40		89

Lowest Recorded Temperature

Years on Record: 31

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		-34		-34		-32		-20		-5		---		35		26		7		-9		-23		-29		-34

Average Number of Days Above 80F/26C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		3.3		---		---		---		---		0.1		0.9		1.7		0.7		---		---		---		---

Average Number of Days Above 70F/21C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		32.6		---		---		---		---		1.4		9.9		13.3		7.7		0.4		---		---		---

Average Number of Days Above 60F/15C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		87.9		---		---		---		0.1		8.5		22.7		26.8		22.5		7.4		---		---		---

Average Number of Days Above 50F/10C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		148.5		---		0.1		0.3		7.6		23.6		29.6		31		30.9		23.1		2.3		---		---

Average Number of Days Above 40F/4C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		199.7		0.4		1.6		7.4		22		29.2		30		31		31		29.5		16.6		1.1		0.1

Average Number of Days Below 70F/21C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		365		31		28		31		30		31		30		31		31		30		31		30		31

Average Number of Days Below 60F/15C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		364.8		31		28		31		30		31		30		30.8		31		30		31		30		31

Average Number of Days Below 50F/10C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		348.4		31		28		31		30		30.9		28		21.8		25.9		29.8		31		30		31

Average Number of Days Below 40F/4C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		278.4		31		28		31		29.9		28.9		10.6		0.9		5.1		21.3		30.7		30		31

Average Number of Days Below 32F/0C

Years on Record: 31

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		229		29		30.4		27.7		27.9		16.2		1.4		---		0.5		8.3		27.4		29.4		30.8

Average Number of Days Below 20F/-6C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		135.8		24.3		20.7		23.1		9.4		0.5		---		---		---		0.5		9.5		22.7		25.1

Average Number of Days Below 10F/-12C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		84.2		17.1		14.9		13.3		4.2		0.1		---		---		---		---		3.6		13.7		17.3

Average Number of Days Below 0F/-17C

Years on Record: 31

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		41.1		11.2		8		2.5		1.3		---		---		---		---		0.5		5.5		9.1		3

Average Precipitation

Years on Record: 31

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		35.6		3.9		3		1.7		1.4		2.5		1.6		2.4		3.6		4.6		3.3		3.1		4.5

Average Number of Days With Precipitation

Years on Record: 31

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		132		11		9		8		7		7		9		13		15		15		12		12		14

Most Reported Precipitation in a Month

Years on Record: 31

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		39.4		12.6		13.4		5.8		4		39.4		4.2		4.6		8.7		9.8		10.5		9.4		11.9

Least Reported Precipitation in a Month

Years on Record: 31

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		---		---		---		---		0.2		---		0.3		1		0.3		1.6		0.4		0.2		0.8

Most Precipitation Reported in a Day

Years on Record: 31

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		9.3		3.1		3.2		2.8		1.4		9.3		1.1		1.1		1.5		2.8		2.6		2.5		4.1

Avg. No. of Days w/Precip. Above 0.1in/2.5mm

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		80.5		8.1		6.3		4.1		3.6		4.1		4.2		7.3		9		9.5		7.5		7.1		9.7

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

Years on Record: 31

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		80		8		6		4		4		4		4		7		9		10		8		7		9

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

Years on Record: 31

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		21		2		2		1		1		1		1		1		2		3		2		2		3

Avg. No. of Days w/Precip. Above 0.5in/13mm

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		20.9		2.8		1.7		0.8		0.9		0.6		0.9		1.3		2.1		3.2		1.8		1.8		3

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

Years on Record: 31

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		6		1		1		---		---		---		---		---		---		1		1		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		0.2		0.4		0.5		0.7		0.6		0.5		0.3		0.2		0.2

Average Snowfall

Years on Record: 31

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		210.9		46.1		30.6		22.5		10.5		1.4		---		---		---		0.6		10.5		35.7		53

Average Number of Days With Snow

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		53.3		9.7		8.5		5.8		3		0.7		---		---		---		0.3		3.8		9.3		12.2

Average Snow Cover

Years on Record: 19

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in.		21		46		54		54		44		14		---		---		---		---		2		13		29

Most Snow Reported in a Month

Years on Record: 31

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		149.1		149.1		75.5		82.1		28.5		10		---		---		---		6		30.5		79.7		122.5

Avg. No. of Days w/Snow Above 1in/2.5cm

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		45.9		8.7		7.2		4.8		2.7		0.6		---		---		---		0.3		2.9		8.1		10.6

Avg. No. of Days w/Snow Above 3in/7.5cm

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		24		5.1		3.8		2.4		1.4		0.2		---		---		---		---		1.2		4		5.9

Avg. No. of Days w/Snow Above 5in/12.7cm

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		14		3.2		2.4		1		0.9		0.1		---		---		---		---		0.7		2.2		3.5

Avg. No. of Days w/Snowfall Above 10in/25cm

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		5		1.2		0.8		0.4		0.4		---		---		---		---		---		0.2		0.8		1.2

Avg. # of Days w/Snow Depth Above 1in/2.5cm

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		211.4		31		28.2		31		29.9		18.6		0.5		---		---		0.5		12.5		28.2		31

Avg. # of Days w/Snow Depth Above 3in/7.5cm

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		207		31		28.2		31		29.9		18.2		0.3		---		---		0.3		9.5		27.6		31

Avg. # of Days w/Snow Depth Above 5in/12.7cm

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		200.4		31		28.2		31		29.9		17.5		0.2		---		---		0.2		6.5		25.2		30.7

Avg. # of Days w/Snow Depth Above 10in/25cm

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		182.8		31		28.2		31		29.7		15.6		0.1		---		---		0.1		1.5		16.8		28.8

Average Relative Humidity

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		73.3		72.1		74.7		68.6		69.5		67.4		67.6		76.5		78.8		79.8		75		77.3		71.4

Heating Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		11225		1567		1323		1317		975		664		325		213		309		578		1037		1380		1538

Cooling Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		10		---		---		---		---		---		2		6		2		---		---		---		---

Growing Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		608		---		---		---		---		14		148		258		167		21		---		---		---

Average Length of Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		13.6		7.4		9.8		12.7		15.8		19.5		22.1		20.3		16.7		13.6		10.6		7.9		6.4

Average Total Sky Cover

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		65.8		60.2		63		54.1		63.5		63.3		69		77.4		73.7		71.4		63.9		63.4		65.7

Average Opaque Sky Cover

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		56.8		54.4		53.9		45		50.8		52		56.4		67.4		66.2		62.8		56.4		56.7		58.4

Average Wind Speed

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mph		2.9		2.5		2.4		3.2		2.8		3		3.3		2.9		3.2		3.3		3.2		2.6		2.6

Average Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		2.4		0.3		0.9		2.1		3.6		4.6		5.3		4.7		3.6		2.4		1.2		0.4		0.1

Average Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.4		0.2		0.6		1.2		2		2.5		2.8		2.6		2.2		1.4		0.8		0.3		0.1

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		2.8		0.9		1.8		3.2		4.4		4.3		4.5		4.1		3.6		3		2.3		1.3		0.4

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		2.7		0.8		1.5		2.7		4		4.6		5.2		4.3		3.2		2.8		2		1.1		0.2

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		2.4		0.3		0.9		2.1		3.6		4.6		5.3		4.7		3.6		2.4		1.2		0.4		0.1

Maximum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.4		0.2		0.7		1.3		2		2.5		2.8		2.6		2.2		1.5		0.9		0.3		0.1

Maximum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		3.6		1.1		2.5		3.9		5.6		5.4		5.2		5.1		5		3.8		3		1.6		0.5

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		3.8		1		2.2		3.5		5.6		6.4		6.7		6.6		5.7		3.8		2.6		1.4		0.4

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		0.2		0.7		1.8		3		3.7		4.3		3.9		3		1.8		0.7		0.3		0.1

Minimum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.3		0.2		0.5		1.2		1.9		2.4		2.7		2.5		2.1		1.2		0.6		0.2		0.1

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		0.7		1.4		2.7		3.6		3.4		3.6		3.4		2.8		2.1		1.1		0.8		0.3

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.7		0.6		1.2		2.1		2.7		2.7		3.3		2.8		2		1.6		0.8		0.7		0.2