CHARA, RUSSIA

Average Temperature

Years on Record: 73

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		18.5		-27.8		-19.6		---		24.1		40.9		55.6		61.4		55.7		41.3		20.8		-6.5		-23.4

Average High Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		32.5		-13.7		1		18.9		37.2		53.6		69.4		74.3		69.1		53.1		33.1		6.8		-12.3

Average Low Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		7.5		-36.2		-31.9		-16.6		12.2		30.2		43.5		49.3		44.4		31.1		11.5		-15.7		-31.5

Highest Recorded Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		95		26.2		39.6		50		66.4		82.8		95		94.1		92.8		81.3		66.7		45.5		33.1

Lowest Recorded Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		-69.2		-65.9		-69.2		-55.7		-34.2		-1.7		20.8		27.5		22.5		-0.2		-31.9		-53.5		-64.8

Average Number of Days Above 90F/32C

Years on Record: 10

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		1		---		---		---		---		---		0.1		0.8		0.1		---		---		---		---

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		261.1		31		28		31		29.9		23.2		4.3		0.3		2.8		19.1		30.5		30		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		159.8		30.8		27.7		27.3		8.8		---		---		---		---		---		7.9		26.6		30.7

Average Precipitation

Years on Record: 45

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		14		0.1		0.1		0.1		0.6		1.6		2.8		2.9		3.1		1.8		0.6		0.2		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		19.1		0.6		0.4		0.7		2.8		4		5.9		6.6		6.9		4.2		3.1		0.9		0.7

Least Reported Precipitation in a Month

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		7		---		---		---		---		0.1		0.3		0.4		0.4		0.1		---		---		---

Most Precipitation Reported in a Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		2.3		0.2		0.2		0.3		1.1		1.7		2.1		2.3		2.2		1.9		1.2		0.4		0.2

Average Number of Rainy Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		80		---		---		0.1		3		12		16		17		17		13		2		---		---

Average Number of Days With Thunderstorms

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		17		---		---		---		---		1		4		7		4		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		10		1		2		1		1		---		---		---		---		0.1		1		2		2

Average Number of Days With Snow

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		74		9		7		6		9		7		1		---		0.2		4		11		10		10

Average Snow Cover

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		---		5.1		5.5		4.7		1.2		0.4		---		---		---		0.4		1.2		3.1		3.9

Deepest Snow Cover Reported

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		20.9		20.1		20.1		20.9		18.5		12.2		5.5		---		---		11		20.9		20.1		20.1

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		171		30		28		27		10		3		0.1		---		---		2		16		27		28

Average Relative Humidity

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		70		78		72		66		59		58		58		71		75		72		72		77		79

Average Dew Point

Years on Record: 10

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		11		-29		-24		-7		10		27		43		53		49		34		14		-14		-30

Heating Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		16365.3		2788.5		2272.7		1979.4		1209		716.1		256.5		99.2		255.8		687		1323.7		2083.5		2693.9

Growing Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		768.6		---		---		---		---		---		193.5		365.8		209.3		---		---		---		---

Average Station Pressure

Years on Record: 72

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
inHg		27.4		27.6		27.6		27.5		27.4		27.4		27.3		27.3		27.4		27.5		27.5		27.6		26.8

Average Vapor Pressure

Years on Record: 69

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
inHg		0.1		---		---		---		0.1		0.1		0.3		0.4		0.3		0.2		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		8.3		10.2		12.5		15		17.4		18.9		18.1		15.9		13.4		11		8.8		7.7

Average Monthly Sunshine

Years on Record: 54

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		2115.5		81.8		145.5		217.7		232.3		244.6		257.2		250.4		218		156.2		149.2		101.8		60.9

Average Number of Days With Fog

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		57		10		6		0.3		0.1		2		4		9		12		5		1		1		7

Average Number of Clear Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		26		4		4		3		2		1		1		1		1		1		2		2		4

Average Number of Cloudy Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		107		7		6		7		9		11		11		11		11		11		8		8		7

Average Number of Partly Cloudy Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		232		20		18		21		19		19		18		19		19		18		21		20		20

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		5		---		---		---		0.1		1		0.3		2		1		0.3		0.1		---		---

Average Wind Speed

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mph		3.4		1.4		2		3.6		5.6		5.8		5.8		3.8		3.4		3.8		3.6		2.2		1.6

Average No. of Days With Blowing Dust/Sand

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		10		3		1		0.1		0.1		0.1		---		---		---		0.1		1		2		3

Average Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		2.9		0.7		1.5		2.9		4.2		4.9		5.4		5.2		4.3		2.7		1.7		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		1.5		0.4		0.9		1.5		2		2.6		2.8		2.6		2.2		1.5		1		0.6		0.3

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		3.5		1.8		3		4.4		5		4.5		4.6		4.6		4.3		3.2		2.9		2		1.2

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		3.3		1.6		2.6		3.9		4.6		4.4		4.9		4.8		4.1		2.9		2.5		1.7		1.2

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		2.9		0.7		1.5		2.9		4.2		4.9		5.4		5.2		4.3		2.7		1.7		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		1.6		0.5		1		1.7		2		2.6		2.8		2.6		2.2		1.6		1.1		0.6		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		4		1.9		3.5		5.3		5.7		5.3		5.6		5.3		5		4		3.2		2.3		1.5

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		4.2		1.7		3.1		4.9		5.6		5.8		6.9		6.2		5.4		3.9		2.8		2		1.5

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		2.4		0.6		1.3		2.3		3.5		4.1		4.5		4.5		3.9		2.4		1.3		0.5		0.4

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		0.8		1.4		2		2.6		2.7		2.6		2.2		1.4		0.8		0.4		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		2.8		1.6		2.4		3.2		4.1		3.9		3.9		3.9		3.8		2.8		2.1		1		1.1

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		2.4		1.4		2.1		2.5		3.2		3		3.3		3.5		3.4		2.3		1.7		0.7		1.1