MARIETTA, GEORGIA

Average Temperature

Years on Record: 45

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		61		42		45		52		61		69		76		79		78		72		62		52		44

Average High Temperature

Years on Record: 45

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		70		50		55		62		71		79		85		88		87		81		72		61		53

Average Low Temperature

Years on Record: 45

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		51		33		36		42		50		59		66		70		69		63		51		42		35

Highest Recorded Temperature

Years on Record: 45

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		104		78		79		85		91		94		100		102		104		99		95		83		77

Lowest Recorded Temperature

Years on Record: 45

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		-4		-4		2		10		28		38		45		54		55		33		23		4		-1

Average Number of Days Above 90F/32C

Years on Record: 45

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		32		---		---		---		1		7		12		9		3		---		---		---		---

Average Number of Days Below 32F/0C

Years on Record: 45

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		53		15		11		6		1		---		---		---		---		---		1		6		13

Average Number of Days Below 20F/-6C

Years on Record: 45

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		7		3		1		1		---		---		---		---		---		---		---		1		1

Average Precipitation

Years on Record: 45

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in.		52.5		5		4.8		5.7		4.3		4.4		3.7		4.9		3.8		3.6		3.1		3.8		4.6

Average Precipitable Water

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in.		1		0.5		0.6		0.6		0.8		1.1		1.4		1.6		1.6		1.3		0.9		0.7		0.6

Average Number of Rainy Days

Years on Record: 45

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		116		11		11		11		9		9		10		12		10		8		6		9		10

Average Number of Days With Thunderstorms

Years on Record: 45

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		49		1		2		3		4		6		8		11		8		3		1		1		1

Most Rain Reported in a Day

Years on Record: 45

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in.		4.9		4.7		4.4		4.9		3.9		4.3		3.2		4		3		3.9		4.5		4.9		3

Most Rain Reported in a Month

Years on Record: 45

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in.		78.3		12.4		11.2		13.8		12.6		8.9		10.4		11.9		9.2		10.4		8.4		15.3		12.3

Least Rain Reported in a Month

Years on Record: 45

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in.		36.8		0.7		0.8		1.6		0.4		0.2		0.8		0.5		0.5		---		0.2		---		0.6

Average Snowfall

Years on Record: 41

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in.		1.9		0.8		0.6		0.6		---		---		---		---		---		---		---		---		0.4

Average Number of Days With Snow

Years on Record: 41

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

Deepest Snow Cover Reported

Years on Record: 41

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in.		6		4		3		6		---		---		---		---		---		---		---		---		1

Most Snow Reported in a Day

Years on Record: 41

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in.		22.1		4		6.2		1		---		---		---		---		---		---		0.9		3.8		6.2

Most Snow Reported in a Month

Years on Record: 41

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in.		13.1		6		5.2		12.8		1		---		---		---		---		---		---		0.9		5.1

Average Relative Humidity

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		69.3		69.2		65.6		63.2		63.3		68.7		71.9		73.1		72.5		72.3		72		70.4		70.4

Average Morning Relative Humidity

Years on Record: 10

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		78.2		73.5		73		73.3		74.3		78.9		80.5		82		84.4		83.5		81.4		78.1		74.7

Average Evening Relative Humidity

Years on Record: 10

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		54.6		55.5		53		50.8		47		53		55.1		56.9		58.1		59		53.5		56.2		56.7

Average Dew Point

Years on Record: 10

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		49		30		33		38		45		56		64		67		67		61		50		41		33

Average Wet Bulb

Years on Record: 10

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		55		38		41		46		52		61		68		71		70		65		56		48		40

Heating Degree Days

Years on Record: 46

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		2956		644		483		420		172		29		---		---		---		12		132		419		645

Cooling Degree Days

Years on Record: 46

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		1767		---		---		9		41		185		348		454		425		245		54		5		1

Growing Degree Days

Years on Record: 45

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		4620		---		---		62		330		589		780		899		868		660		372		60		---

Average Length of Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		12.6		10.7		11.4		12.4		13.5		14.4		14.9		14.6		13.8		12.8		11.7		10.8		10.4

Average Number of Days With Fog

Years on Record: 45

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		175		14		12		13		11		14		15		17		19		18		14		14		14

Average Possibility of Clouds

Years on Record: 10

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		54.9		62.1		60.8		59.4		51.9		56.1		53.2		56		53.2		50		44.7		52.5		60

Average Total Sky Cover

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		58.4		63		62.7		60		56.9		58.3		61.2		61		59.7		53.8		49.2		53		60.4

Average Opaque Sky Cover

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		52.3		58		56		53.9		51		51.7		54.3		53.8		52.7		48.8		45.1		48.3		55.1

Average Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		4.2		2.4		3		4.1		5.1		5.6		5.7		5.7		5.2		4.6		3.9		2.7		2.2

Average Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.7		1		1.3		1.7		2		2.3		2.5		2.4		2.2		1.8		1.3		1		0.9

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		4.5		3.4		3.8		4.6		5.1		5.1		5.1		5.1		5		4.9		4.9		3.8		3.3

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		4.4		3.4		3.6		4.3		4.8		4.9		4.8		5		4.6		4.8		5.1		3.9		3.4

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		4.2		2.4		3		4.1		5.1		5.6		5.7		5.7		5.2		4.6		3.9		2.7		2.2

Maximum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.8		1		1.3		1.7		2.1		2.4		2.5		2.5		2.2		1.9		1.4		1.1		0.9

Maximum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		5.5		4.2		5.1		5.7		5.8		5.7		5.7		6.1		6		5.8		6.2		5.2		3.9

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		6		4.6		5.5		6		6.1		6.1		6.3		7		6.5		6.2		7.1		6.1		4.3

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		3.4		1.9		2.5		3.3		4		4.4		4.7		5.1		4.5		3.9		3		2		1.9

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		0.9		1.1		1.5		1.9		2.2		2.3		2.1		1.9		1.6		1		0.8		0.8

Minimum 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		2.5		3		3.6		3.9		4.1		4.2		4.6		4.3		4.1		3.6		2.5		2.6

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		2.9		2.2		2.4		2.8		2.9		3		3.2		3.9		3.5		3.4		3		2.2		2.4