ROSWELL, GEORGIA

Average Temperature

Years on Record: 109

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		58.4		38.6		41.6		49.7		58.1		66.2		73.4		76.5		76		70.3		59.2		49.9		41.7

Average High Temperature

Years on Record: 109

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		70.2		49.2		53.4		62.4		71.5		78.4		84.9		87.4		86.9		81.3		71.7		62.3		52.7

Average Low Temperature

Years on Record: 109

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		46.7		27.9		29.9		37		44.7		53.9		61.9		65.6		65.2		59.3		46.7		37.5		30.7

Highest Recorded Temperature

Years on Record: 109

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		102		75		80		88		91		95		101		102		101		98		88		84		76

Lowest Recorded Temperature

Years on Record: 109

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		-10		-10		1		6		24		31		40		48		50		28		25		10		-1

Average Number of Days Above 90F/32C

Years on Record: 109

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		28.9		---		---		---		---		0.9		6		10.4		9.1		2.5		---		---		---

Average Number of Days Below 32F/0C

Years on Record: 109

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		84.7		20.9		18		10.9		3.4		---		---		---		---		---		1.7		10.8		19

Average Number of Days Below 0F/-17C

Years on Record: 109

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		0.5		0.4		---		---		---		---		---		---		---		---		---		---		0.1

Average Precipitation

Years on Record: 109

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in.		52.3		4.9		4.9		6		4.2		4.3		3.8		4.5		4		3.8		3.6		3.7		4.7

Average Number of Days With Precipitation

Years on Record: 109

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		110		11		9		11		9		9		8		10		9		8		7		8		10

Most Precipitation Reported in a Day

Years on Record: 109

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in.		5.4		4.7		4.8		5.2		3.2		3.3		3.9		3.3		3.1		3.4		3.8		4.4		5.4

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

Years on Record: 109

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		79		8		7		8		6		6		6		7		6		5		5		6		8

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

Years on Record: 109

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		35		3		4		4		3		3		3		3		3		3		2		2		3

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

Years on Record: 109

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

Most Rain Reported in a Month

Years on Record: 109

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in.		72.6		11		13.1		13.9		11		9		8.5		10.8		7.9		15.3		9.9		7.2		14.7

Least Rain Reported in a Month

Years on Record: 109

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in.		40.7		0.8		0.9		1.1		0.4		0.5		0.5		0.9		1.1		---		---		1.5		0.8

Average Snowfall

Years on Record: 109

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in.		1.7		1.2		0.4		---		---		---		---		---		---		---		---		---		0.1

Most Snow Reported in a Month

Years on Record: 109

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in.		16		16		3.5		1		---		---		---		---		---		---		---		---		2

Heating Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		3705		837		655		480		229		83		6		---		---		21		217		455		722

Cooling Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		1231		---		---		5		13		102		237		347		332		168		22		5		---

Growing Degree Days

Years on Record: 109

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		3968.9		---		---		---		243		502.2		702		821.5		806		609		285.2		---		---

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 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		2.5		3.1		4.2		5.2		5.6		5.7		5.7		5.2		4.6		3.9		2.7		2.3

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		4.6		3.5		3.9		4.7		5.2		5.2		5.1		5.1		5		4.9		4.9		3.8		3.4

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		4.4		3.6		3.7		4.5		5		4.9		4.8		5		4.6		4.6		5		4		3.5

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		2.5		3.1		4.2		5.2		5.6		5.7		5.7		5.2		4.6		3.9		2.7		2.3

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		5.5		5.6		5.9		5.7		5.6		6.2		5.9		5.8		6.2		5.1		4

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		4.7		6.1		5.8		6.3		6.1		6		7.3		6.5		6.2		7.1		5.9		4.4

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		3.4		2		2.5		3.5		3.9		4.5		4.9		4.8		4.5		3.9		3.1		1.9		1.8

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		2.4		2.1		1.9		1.6		1		0.9		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		2.7		3		3.8		3.9		4.2		4.4		4.3		4.3		4.1		3.7		2.3		2.5

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		2.4		2.4		3.1		2.8		3.1		3.5		3.4		3.5		3.4		3.2		1.8		2.3