JACKSONVILLE, NORTH CAROLINA

Average Temperature

Years on Record: 40

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		17		7		8		12		16		21		25		27		26		23		18		13		8

Average High Temperature

Years on Record: 40

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		22		12		14		18		23		26		30		31		31		28		23		19		14

Average Low Temperature

Years on Record: 40

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		11		1		2		6		10		15		19		22		21		18		12		7		2

Highest Recorded Temperature

Years on Record: 40

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		38		27		30		33		35		36		38		38		38		36		35		31		27

Lowest Recorded Temperature

Years on Record: 40

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		-20		---		-10		-11		-3		---		7		12		12		6		-4		-7		-20

Average Number of Days Above 90F/32C

Years on Record: 40

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		41		---		---		---		1		3		8		15		12		4		---		---		---

Average Number of Days Above 70F/21C

Years on Record: 40

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		230		3		5		11		20		29		30		31		31		29		24		13		5

Average Number of Days Below 32F/0C

Years on Record: 40

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		48		15		11		5		---		---		---		---		---		---		---		3		12

Average Precipitation

Years on Record: 32

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		1330		110		90		100		70		90		130		180		160		110		80		80		90

Average Precipitable Water

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm.		2.6		1.5		1.5		1.7		2		2.8		3.8		4.4		4.2		3.6		2.5		2		1.6

Average Number of Days With Thunderstorms

Years on Record: 24

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		86		2		2		3		7		10		13		21		16		7		2		2		1

Most Rain Reported in a Month

Years on Record: 32

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		1670		210		230		200		220		210		290		360		410		320		220		170		160

Least Recorded Rainfall

Years on Record: 32

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		970		30		20		20		---		10		50		60		40		20		10		10		10

Average Relative Humidity

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		72.6		69		66.1		65.5		66.3		72.7		76.5		78.3		79.4		78		76.1		73.1		70.2

Average Morning Relative Humidity

Years on Record: 40

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		82		79		77		79		79		82		84		86		88		88		86		82		80

Average Evening Relative Humidity

Years on Record: 40

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		58		57		53		52		49		56		62		66		67		63		58		56		57

Average Dew Point

Years on Record: 37

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		11		1		1		5		9		15		18		21		21		18		12		7		2

Heating Degree Days

Years on Record: 40

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		1576.4		361.7		282.5		189.4		41.7		---		---		---		---		---		8.6		150		301.4

Cooling Degree Days

Years on Record: 40

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		952.7		---		---		---		---		86.1		191.7		266.9		249.7		158.3		---		---		---

Growing Degree Days

Years on Record: 40

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		2854.7		---		---		68.9		208.3		344.4		441.7		525.3		508.1		408.3		249.7		100		---

Average Length of Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		12.6		10.6		11.4		12.4		13.5		14.5		14.9		14.7		13.8		12.8		11.7		10.8		10.3

Average Number of Days With Fog

Years on Record: 24

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		237		18		14		17		15		22		23		22		25		24		21		19		17

Average Total Sky Cover

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		54.7		54.5		56.4		52.9		52.5		56.8		59.3		60.2		60.8		56.3		47.9		47		51.6

Average Opaque Sky Cover

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		51.7		51.4		52.2		50.1		50.4		53.2		56		57.1		58		53.3		45.8		44.5		48.7

Average Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		15.3		8.8		11.3		15.3		18.9		20.9		21.3		20.7		18.3		16.1		13.5		10		8.2

Average Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		6		3.4		4.4		5.8		7.2		8.3		8.8		8.6		7.8		6.3		4.6		3.5		3

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		16.6		12.9		14.4		17.4		18.9		19.1		18.7		18.5		17.6		17.3		17.2		14.3		12.8

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		16.5		13.4		14.4		16.9		18.5		19		18.5		18.1		16.3		16.5		17.5		15.2		13.6

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		15.3		8.8		11.3		15.3		18.9		20.9		21.3		20.7		18.3		16.1		13.5		10		8.2

Maximum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		6.3		3.5		4.6		6.1		7.6		8.7		9.1		8.9		8		6.6		5.1		3.8		3.2

Maximum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		19.4		15.9		18.2		19.8		22		21.4		20.9		20.3		20.1		19.7		21.9		17.5		15.3

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		21.3		18		20		20.7		24.3		23.8		23.5		21.7		20.9		20.6		24.9		20.2		17.2

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		12.5		7.3		8.3		12.6		15.7		17.1		17.7		18		15.8		13.4		10.5		7.3		6.4

Minimum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		5.5		3		3.9		5.4		6.4		7.7		8.2		8.2		7.3		5.9		3.7		3.1		2.8

Minimum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		13.1		10.1		9.8		13.9		15.5		15.7		15.8		16.2		15.2		14.1		12.5		9.5		9

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		10.9		9.4		7.7		11.6		12.7		12.6		12.7		13.6		12.1		11.4		10.6		8.3		8.3