JACKSONVILLE BEACH, FLORIDA

Average Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		21.2		12.7		14.5		17.4		20.4		24.4		27.3		28.3		28.1		26.6		22.7		18.1		14

Average High Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		26.2		18.2		19.9		22.9		26.1		29.7		32		33		32.5		30.7		27.1		23.1		19.2

Average Low Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		16.3		7.3		9.1		11.9		14.7		19.3		22.6		23.6		23.7		22.4		18.2		13.1		8.8

Highest Recorded Temperature

Years on Record: 51

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		39		30		31		33		35		37		38		38		39		36		35		31		30

Lowest Recorded Temperature

Years on Record: 51

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		-12		-12		-4		-5		1		7		9		17		15		-10		2		-6		-10

Average Number of Days Above 100F/38C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		1.2		---		---		---		---		---		0.5		0.3		0.3		---		---		---		---

Average Number of Days Above 90F/32C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		70.3		---		---		0.1		0.9		6.3		14.7		21.1		17.5		8.6		1.2		---		---

Average Number of Days Above 80F/26C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		194.1		0.8		2.3		7.2		14		25.9		28.6		30.9		30.7		27.6		18.4		6.3		1.4

Average Number of Days Above 70F/21C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		284.9		9.9		12.5		20.8		27		30.6		30		31		31		30		29.4		21.1		11.7

Average Number of Days Above 60F/15C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		339.2		21.7		22.6		28.8		29.8		31		30		31		31		30		30.9		28.8		23.7

Average Number of Days Above 50F/10C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		360.7		28.7		27.5		30.8		30		31		30		31		31		30		31		29.9		29.8

Average Number of Days Above 40F/4C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		364.6		30.8		28		31		30		31		30		31		31		30		31		30		30.9

Average Number of Days Below 70F/21C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		235.5		31		28		30.8		29.1		19.5		5.9		1.4		1.5		7		21.9		28.4		31

Average Number of Days Below 60F/15C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		152.7		28.6		25.5		23.1		16		4.6		0.1		---		---		0.5		8.1		19.2		27

Average Number of Days Below 50F/10C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		79.2		20.3		15		10.5		4.6		0.5		---		---		---		---		1.5		8.8		18

Average Number of Days Below 40F/4C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		27.9		10.3		5.3		2.2		0.4		---		---		---		---		---		0.2		2.1		7.3

Average Number of Days Below 32F/0C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		6.8		3.3		1.3		0.1		---		---		---		---		---		---		---		0.2		1.8

Average Number of Days Below 20F/-6C

Years on Record: 30

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

Average Precipitation

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		1249.7		76.2		68.6		99.1		66		66		154.9		160		160		193		86.4		61		61

Average Number of Days With Precipitation

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		115.3		8.2		7.9		8.7		5.6		6.5		14.3		14.5		15.1		12		8.3		6.8		7.4

Avg. No. of Days w/Precip. Above 0.1in/2.5mm

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		75.6		5.1		5.3		6		4.1		4.4		9.4		10.3		10.3		8.1		4.7		3.9		4

Avg. No. of Days w/Precip. Above 0.5in/13mm

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		32.9		2.2		1.6		2.8		1.8		2		4.6		4.1		4.4		4.1		2.2		1.5		1.6

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

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		14.4		0.7		0.7		1.3		0.7		0.6		1.8		2.1		1.7		2.3		1.2		0.7		0.6

Average Precipitable Water

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm.		3.1		2		1.9		2.1		2.4		3.1		4.3		4.7		4.8		4.3		3.2		2.4		2.1

Average Number of Days With Thunderstorms

Years on Record: 44

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		70		1		1		3		4		7		12		16		14		8		2		1		1

Most Rain Reported in a Month

Years on Record: 51

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		1780		200		150		280		170		330		310		340		450		400		270		180		180

Least Recorded Rainfall

Years on Record: 51

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		620		---		10		---		10		10		30		40		60		---		---		---		---

Average Snowfall

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		0.3		---		---		---		---		---		---		---		---		---		---		---		0.3

Average Number of Days With Snow

Years on Record: 30

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

Average Relative Humidity

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		70		68.9		67.3		65.6		63.2		66.2		71.8		72.3		74.4		74.6		71.8		70.8		71.6

Average Morning Relative Humidity

Years on Record: 51

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		84		81		80		81		82		83		86		87		89		88		86		83		82

Average Evening Relative Humidity

Years on Record: 51

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		57		55		52		49		49		52		61		64		65		65		61		57		58

Average Dew Point

Years on Record: 51

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		15		7		7		10		13		17		21		22		22		21		16		11		8

Heating Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		1097		329		216		123		36		2		---		---		---		---		15		105		271

Cooling Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		3009		16		23		72		149		345		483		556		546		444		255		92		29

Growing Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		7505		205		247		419		563		807		933		1021		1011		894		705		440		259

Average Length of Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		12.6		10.9		11.6		12.4		13.4		14.1		14.5		14.3		13.6		12.7		11.8		11		10.7

Average Number of Days With Fog

Years on Record: 44

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		149		16		12		12		11		11		9		8		11		12		15		15		17

Average Total Sky Cover

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		57.4		55.2		57.8		52.6		51		54.3		65		62.9		64.5		62.4		54.4		51.1		57

Average Opaque Sky Cover

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		53.7		53.2		54.7		49.5		48		51		59.1		57		60		58.7		51.2		48		53.8

Average Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		16.3		10.7		13.1		16.9		21.1		22.3		20.2		20.6		18.8		16		14.2		11.8		10

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		3.9		4.9		6.1		7		8.1		9		8.6		8		6.8		5.3		4		3.6

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		17.3		14.2		16.1		18.6		20.8		20.4		18		18.6		18		16.7		16.9		15.3		13.8

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		16.9		14.9		15.7		18		21.5		20.8		16.4		17.5		16.2		14.7		16.3		16.4		14.7

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		16.3		10.7		13.1		16.9		21.1		22.3		20.2		20.6		18.8		16		14.2		11.8		10

Maximum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		6.6		4.2		5.2		6.6		7.7		8.6		9.1		8.9		8.2		7		5.7		4.4		3.8

Maximum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		20.3		17.2		20.6		22		25.1		22.2		21.6		20.9		19.6		19.4		20.3		18.2		16.3

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		22.3		19.7		22.7		23.9		30.1		24.7		24.3		22.3		19.1		19.2		21.8		21.1		18.7

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		13.7		7.9		10.2		13.4		18.5		20.1		18.1		18		16.7		13.9		11.3		8.5		7.8

Minimum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		5.6		3.5		4.1		5.3		5.5		7.6		8		8.1		7.7		6.4		4.7		3.5		3.2

Minimum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		14		9.7		11.8		14.3		18.1		18.5		16.3		16.3		16		14.2		12.8		10.2		10.1

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		11.7		8.3		9.5		11.3		16.6		16.9		13.1		13.2		12.8		10.9		10.4		8.7		9.2