AYAN, RUSSIA

Average Temperature

Years on Record: 88

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		27.1		-1.5		2.1		12.4		25.7		34.9		44.1		53.4		56		49.1		33.1		13.1		2.5

Average High Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		32		3		7		19		32		39		49		57		62		56		40		18		6

Average Low Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		19		-10		-8		2		17		28		37		47		50		42		25		5		-5

Highest Recorded Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		93		27		32		45		63		77		93		91		86		77		66		45		36

Lowest Recorded Temperature

Years on Record: 33

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		-42		-42		-40		-24		-15		5		18		32		34		23		-17		-26		-31

Average Number of Days Below 32F/0C

Years on Record: 10

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		234.1		31		28		31		29.5		22.8		4.2		0.2		---		2.9		23.6		29.9		31

Average Number of Days Below 0F/-17C

Years on Record: 10

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		85		25.2		18.8		11.2		0.8		---		---		---		---		---		0.2		8		20.8

Average Precipitation

Years on Record: 45

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		36.2		0.9		0.5		1.1		1.9		3.2		3.9		5.6		6.5		6.2		3.4		1.7		1.2

Average Number of Days With Sleet

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		5		---		0.1		0.1		1		3		1		---		---		---		---		0.2		---

Most Reported Precipitation in a Month

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		65.5		4.1		2		7.6		7.3		8.3		14.2		21.6		28.1		23.9		16		9.1		8.7

Least Reported Precipitation in a Month

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		13		---		---		---		---		0.2		---		0.2		0.2		0.6		---		---		---

Most Precipitation Reported in a Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		10.2		1.5		0.8		1.8		2.2		2.8		4.6		7.6		10.2		9.3		3.7		4.1		1.6

Average Number of Rainy Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		86		---		0.1		0.2		1		11		15		19		16		15		8		1		0.1

Average Number of Days With Thunderstorms

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		3		---		---		---		---		0.1		1		1		1		0.2		0.1		---		---

Average No. of Days With Freezing Rain

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		5		0.1		0.3		1		2		1		---		---		---		---		---		---		0.1

Average Number of Days With Snow

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		80		9		7		10		14		12		1		---		---		1		7		10		9

Average Snow Cover

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		---		15.4		18.5		20.9		20.5		9.1		---		---		---		---		1.2		7.9		12.6

Deepest Snow Cover Reported

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		72.8		51.2		65.4		62.2		72.8		61.8		32.7		---		---		2.8		22		51.2		56.3

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		30		5		4		4		4		2		---		---		---		---		1		4		6

Av. # of Days w/Snow Depth Above 0.4in/10mm

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		201		31		28		30		27		19		0.4		---		---		---		8		28		30

Average Relative Humidity

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		69		57		55		63		76		83		83		88		83		74		61		54		54

Average Dew Point

Years on Record: 10

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		17		-17		-11		1		17		30		40		49		52		40		20		-2		-13

Heating Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		14288.9		2123.5		1850.4		1689.5		1215		976.5		660		403		279		480		1007.5		1605		1999.5

Growing Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		248		---		---		---		---		---		---		62		186		---		---		---		---

Average Station Pressure

Years on Record: 74

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
inHg		29.9		30		30		30		29.9		29.8		29.8		29.8		29.8		29.8		29.9		29.9		29.9

Average Vapor Pressure

Years on Record: 78

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
inHg		0.2		---		---		---		0.1		0.2		0.2		0.4		0.4		0.3		0.1		---		---

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		10.2		12.5		15		17.3		18.7		18		15.8		13.4		11		8.9		7.8

Average Monthly Sunshine

Years on Record: 72

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		1734.7		95.7		141		201.1		184.8		165.7		168.4		151.5		159.3		150.7		146.5		102		68

Average Number of Days With Fog

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		53		0.1		---		1		4		9		14		14		7		3		0.2		0.1		0.1

Average Number of Clear Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		58		9		7		7		4		2		3		2		3		3		4		6		8

Average Number of Cloudy Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		124		6		5		8		12		16		13		18		14		10		9		7		6

Average Number of Partly Cloudy Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		183		16		16		16		14		13		14		11		14		17		18		17		17

Average Number of Days With Smoke/Haze

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		2		---		---		---		---		---		---		1		1		0.1		---		---		---

Average Wind Speed

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mph		5.8		4.7		4.5		5.2		6.7		7.6		7.6		7.1		6		5.2		5.3		5.2		4.5

Average Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		3.1		0.8		1.8		3.3		4.7		5.4		5.7		4.9		4.2		3.2		1.9		0.9		0.5

Average Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.6		0.5		1		1.6		2.1		2.6		2.8		2.6		2.2		1.6		1.1		0.6		0.4

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		3.7		1.8		3.4		4.9		5.7		5		4.9		4.3		4.2		3.9		3.1		2		1.4

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		3.6		1.6		3		4.4		5.6		5.3		5.4		4.2		4		3.8		2.8		1.8		1.3

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		3.1		0.8		1.8		3.3		4.7		5.4		5.7		4.9		4.2		3.2		1.9		0.9		0.5

Maximum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.7		0.5		1.1		1.8		2.1		2.7		2.8		2.6		2.2		1.7		1.2		0.7		0.4

Maximum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		4.4		2.1		3.9		5.7		6.3		6		6		5.3		5.2		4.7		3.9		2.5		1.6

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		4.6		1.9		3.5		5.2		6.4		7.2		7.6		6.1		5.7		4.8		3.7		2.3		1.4

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		2.5		0.7		1.5		2.5		4.1		4.4		4.5		3.8		3.2		2.7		1.6		0.7		0.5

Minimum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.5		0.4		0.9		1.4		2		2.6		2.7		2.5		2.1		1.5		1		0.5		0.3

Minimum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		2.9		1.5		2.7		3.5		4.9		4		3.9		3.4		3		3.2		2.5		1.5		1.4

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		2.5		1.3		2.3		2.8		4.4		3.4		3.3		2.4		2.1		2.8		2.3		1.3		1.2