ST. PETERSBURG, FLORIDA

Average Temperature

Years on Record: 49

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		73		61		63		68		73		78		82		83		83		82		76		69		63

Average High Temperature

Years on Record: 49

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		81		70		71		76		81		86		89		90		90		89		84		77		72

Average Low Temperature

Years on Record: 49

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		65		53		54		59		64		70		74		76		76		75		68		60		54

Highest Recorded Temperature

Years on Record: 49

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		100		87		86		90		93		96		100		99		97		97		94		90		89

Lowest Recorded Temperature

Years on Record: 49

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		20		25		30		32		41		55		54		67		68		61		43		29		20

Average Number of Days Above 90F/32C

Years on Record: 49

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		75		---		---		1		6		15		18		19		14		2		---		---		---

Average Number of Days Below 40F/4C

Years on Record: 49

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		8		3		1		1		---		---		---		---		---		---		---		1		2

Average Number of Days Below 32F/0C

Years on Record: 49

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

Average Precipitation

Years on Record: 49

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in.		45.8		2.3		2.8		3.4		1.6		2.6		5.7		7		7.8		6.1		2.5		1.9		2.2

Average Precipitable Water

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in.		1.3		0.9		0.9		0.9		1		1.3		1.7		1.9		1.9		1.8		1.4		1		0.9

Average Number of Rainy Days

Years on Record: 49

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		103		6		6		7		5		6		12		16		16		12		6		5		6

Average Number of Days With Thunderstorms

Years on Record: 49

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		81		1		2		3		3		5		13		19		19		11		3		1		1

Most Rain Reported in a Day

Years on Record: 49

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in.		10.7		4.3		3.5		3.1		3		7.4		10.7		7.3		6.8		6		4.9		5.1		3.2

Most Rain Reported in a Month

Years on Record: 49

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in.		67.6		11		8.7		14.4		5.2		11.2		17.2		19		18.1		17.3		11.2		7		7.6

Least Rain Reported in a Month

Years on Record: 49

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in.		29.3		---		0.1		0.1		---		---		1		1.8		1.2		0.8		---		---		0.1

Average Relative Humidity

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		75.5		76.5		75.3		73.2		70.7		70.4		76		78		78.8		78.9		75.5		75.4		75.7

Average Morning Relative Humidity

Years on Record: 10

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		80.5		79.9		80.6		79.8		78.9		79.3		80.8		78.9		81.1		83.4		80.4		81.8		80.6

Average Evening Relative Humidity

Years on Record: 10

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		57		57.8		56.3		54.1		51.2		51.8		58.6		59		61.6		60.3		55.9		58.6		58.5

Average Dew Point

Years on Record: 10

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		61		49		52		55		58		64		70		71		72		70		64		59		52

Average Wet Bulb

Years on Record: 10

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		65		54		57		60		63		68		74		74		75		73		68		63		56

Heating Degree Days

Years on Record: 49

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		510		163		116		49		6		---		---		---		---		---		3		42		131

Cooling Degree Days

Years on Record: 49

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		3653		56		66		139		244		419		517		558		561		509		348		164		72

Growing Degree Days

Years on Record: 49

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		8569.3		341		367.3		558		690		868		960		1023		1023		960		806		570		403

Average Length of Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		12.6		11		11.6		12.4		13.3		14		14.3		14.1		13.5		12.7		11.9		11.2		10.8

Average Number of Days With Fog

Years on Record: 49

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		92		14		11		11		7		5		4		2		3		6		7		10		12

Average Possibility of Clouds

Years on Record: 10

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		42.4		43.7		45.7		42.4		32.8		32.5		45.7		50.5		50.1		44.6		32.6		41.3		47.6

Average Total Sky Cover

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		52		53.1		52.9		50.4		45.2		44.5		56.7		60.6		59.5		57.9		48.3		44.9		52

Average Opaque Sky Cover

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		44.4		46.1		47.1		42.7		38		37		49.3		49.7		49		48		41.1		40		46

Average Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		5		3.4		4.1		5.2		6.3		7		6.5		6		5.5		5.1		4.5		3.8		3.2

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		1.4		1.6		1.9		2		2.3		2.4		2.2		1.8		1.4		1.1		1

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		5.3		4.4		5		5.7		6.2		6.4		5.7		5.4		5.3		5.3		5.4		4.9		4.3

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		5.6		4.8		5.1		5.9		6.7		7.3		6		5.2		4.9		5.1		5.5		5.5		4.8

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		5		3.4		4.1		5.2		6.3		7		6.5		6		5.5		5.1		4.5		3.8		3.2

Maximum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.9		1.2		1.5		1.8		2.1		2.3		2.5		2.5		2.3		2		1.6		1.3		1.1

Maximum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		6.2		5.5		6.3		6.8		6.9		7.1		6.5		6		5.8		6		6.3		5.6		4.9

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		7.1		6.6		7.2		7.9		8.2		9.1		7.9		6.6		6		6.3		7.2		6.8		5.8

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		4.3		2.9		3.5		4.4		5.5		6		5.8		5.1		4.7		4.3		3.8		3.1		2.7

Minimum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.4		0.9		1.1		1.3		1.6		1.6		2		2.2		2.1		1.7		1.2		0.9		0.9

Minimum 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		3.6		4.1		4.7		5.4		5.5		5.2		4.7		4.5		4.4		4.4		3.9		3.5

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		4.1		3.5		3.7		4.2		5.1		5.4		4.8		3.8		3.6		3.7		4		3.8		3.5