PRINCE FREDERICK, MARYLAND

Average Temperature

Years on Record: 77

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		13.2		1.3		2.4		6.8		12.7		17.9		22.2		24.4		23.7		20.6		14.2		8.8		3.6

Average High Temperature

Years on Record: 77

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		19.2		6.6		8.1		12.6		19.2		24.4		28.4		30.3		29.7		26.6		20.6		15		8.9

Average Low Temperature

Years on Record: 77

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		7.3		-3.9		-3.1		1.1		6.3		11.5		16.1		18.4		17.8		14.5		8		2.7		-1.6

Highest Recorded Temperature

Years on Record: 77

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		39.4		24.4		25.6		28.9		33.9		35.6		38.3		39.4		38.3		36.7		35		29.4		24.4

Lowest Recorded Temperature

Years on Record: 77

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		-21.7		-21.7		-18.3		-12.8		-5		-1.1		3.3		10		7.2		1.1		-5		-12.2		-16.1

Average Number of Days Above 90F/32C

Years on Record: 77

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		27.1		---		---		---		0.4		1.6		5.8		9.4		6.9		2.8		0.3		---		---

Average Number of Days Below 32F/0C

Years on Record: 77

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		96.6		23.9		20.7		13.9		4.3		0.2		---		---		---		---		2.6		11.2		19.8

Average Number of Days Below 0F/-17C

Years on Record: 77

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		0.3		0.2		0.1		---		---		---		---		---		---		---		---		---		---

Average Precipitation

Years on Record: 77

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		1108		75		82		98		87		96		100		103		131		86		87		77		87

Average Number of Days With Precipitation

Years on Record: 77

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		97		8		8		9		9		9		9		9		8		7		6		6		7

Most Precipitation Reported in a Day

Years on Record: 77

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm.		188.7		71.1		55.9		64.5		153.2		74.7		81.3		101.6		188.7		128.3		98		53.6		50.3

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

Years on Record: 77

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		74		6		6		7		6		7		6		7		6		5		5		5		6

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

Years on Record: 77

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		31		2		3		3		2		3		3		2		3		2		2		2		3

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

Years on Record: 77

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		12		1		1		1		1		1		1		1		2		1		1		1		1

Most Rain Reported in a Month

Years on Record: 77

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		1420		119		174		186		221		234		251		271		450		200		216		197		179

Least Rain Reported in a Month

Years on Record: 77

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		791		10		12		41		10		8		20		34		24		7		8		5		12

Average Snowfall

Years on Record: 77

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm.		49		17		11.7		8.1		0.5		---		---		---		---		---		---		1.5		10.2

Most Snow Reported in a Month

Years on Record: 77

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm.		127.8		68.6		44.5		66		7.6		---		---		---		---		---		---		27.4		44.5

Heating Degree Days

Years on Record: 77

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		2738.6		526.2		448.1		356.5		167.5		11.2		---		---		---		---		124.9		284.2		455.6

Cooling Degree Days

Years on Record: 77

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		537.4		---		---		---		---		---		116.7		186.9		167.1		66.7		---		---		---

Growing Degree Days

Years on Record: 77

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		2017.2		---		---		---		82.5		247.2		366.7		445.2		425.4		316.7		133.5		---		---

Average Length of Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		12.7		10.3		11.3		12.4		13.7		14.8		15.3		15		14.1		12.8		11.6		10.5		10

Average Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		13.9		7.1		9.9		13.4		16.8		19.2		20.3		20.1		17.9		15.3		12.1		8		6.2

Average Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		5.8		3		4		5.5		7.2		8.3		8.9		8.6		7.6		5.9		4.3		3.2		2.7

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		15.3		11.2		13.4		15.6		17		17.6		17.8		17.9		17.3		17		16.3		12.3		10.3

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		15		11.3		13.4		14.7		15.8		16.9		17.4		17.6		16.4		16.6		16.6		12.6		10.4

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		13.9		7.1		9.9		13.4		16.8		19.2		20.3		20.1		17.9		15.3		12.1		8		6.2

Maximum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		5.9		3		4.1		5.7		7.4		8.6		9.1		8.8		7.8		6.3		4.6		3.3		2.7

Maximum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		18.1		13.4		16.7		18.9		19.4		20.7		20.7		19.5		19.3		19.9		20.6		15.6		12.3

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		19.6		14		18.5		19.8		20		23.1		23.6		20.8		20		21.5		23.1		17.4		13

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		11.4		6		7.9		10.8		14.5		12.7		17.1		17.9		15.8		13.1		9.8		5.9		4.8

Minimum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		5.4		2.8		3.6		5.1		6.8		7.7		8.3		8.3		7.3		5.4		3.5		2.8		2.6

Minimum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		12.1		9		9.9		12.1		14.5		11.7		15.1		16.1		15.3		14.1		12.3		8.1		7.2

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		10.1		8.3		8.6		9.7		11.8		7.2		12.1		13.9		12.9		12.2		10.8		7		6.4