CHESAPEAKE, VIRGINIA

Average Temperature

Years on Record: 84

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		14.3		3.9		3.4		8		13.9		17.9		23.3		25.1		24.7		21		15.1		10.1		4.9

Average High Temperature

Years on Record: 84

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		22.4		12.3		11.9		17.1		22.7		26.1		31.3		32.6		32.2		28.8		23.2		18.3		13.1

Average Low Temperature

Years on Record: 84

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		6.1		-4.4		-5		-0.6		4.8		9.7		15.4		17.5		17.4		13.2		6.9		1.8		-3.3

Highest Recorded Temperature

Years on Record: 84

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		39.4		24.4		26.7		30.6		34.4		35		38.3		39.4		38.9		36.1		34.4		29.4		27.2

Lowest Recorded Temperature

Years on Record: 84

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		-17.8		-17.8		-16.1		-11.1		-6.7		-1.1		5		9.4		7.8		2.2		-4.4		-10.6		-13.9

Average Number of Days Above 90F/32C

Years on Record: 84

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		61.6		---		---		---		0.7		2.8		14.5		20		17.7		5.4		0.4		---		---

Average Number of Days Below 32F/0C

Years on Record: 84

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		114.2		24.5		24.5		18.6		6.6		0.5		---		---		---		---		3.3		12.5		23.7

Average Number of Days Below 0F/-17C

Years on Record: 84

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

Average Precipitation

Years on Record: 84

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		1299		101		96		105		92		106		113		152		140		117		95		87		96

Average Number of Days With Precipitation

Years on Record: 84

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		103		10		9		9		9		9		8		10		9		7		6		7		9

Most Precipitation Reported in a Day

Years on Record: 84

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm.		200.2		78.5		73.7		132.1		105.7		138.4		123.2		115.8		200.2		163.8		185.4		113		92.7

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

Years on Record: 84

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		83		8		7		8		7		7		7		9		8		6		5		6		7

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

Years on Record: 84

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

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

Years on Record: 84

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		15		1		1		1		1		1		1		2		2		1		1		1		1

Most Rain Reported in a Month

Years on Record: 84

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		1913		269		245		263		194		289		304		365		481		313		265		239		241

Least Rain Reported in a Month

Years on Record: 84

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		836		32		14		20		11		30		17		29		10		10		---		6		32

Average Snowfall

Years on Record: 84

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm.		9.7		3		2.5		0.8		---		---		---		---		---		---		---		---		2.8

Most Snow Reported in a Month

Years on Record: 84

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm.		63.5		30.5		38.1		22.9		---		---		---		---		---		---		---		5.1		53.3

Heating Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		2000		463.3		376.7		275.6		127.2		24.4		---		---		---		6.7		108.3		228.3		389.4

Cooling Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		753.3		---		---		---		3.9		48.3		150		222.2		201.7		103.3		23.9		---		---

Growing Degree Days

Years on Record: 84

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		2172.8		---		---		---		116.7		244.6		400		466.7		456.4		330		156.7		1.7		---

Average Length of Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		12.7		10.5		11.3		12.4		13.6		14.6		15.1		14.9		14		12.8		11.7		10.7		10.2

Average Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		14.8		8		10.7		14.5		17.9		20.1		21.5		20.6		18.3		16		13.1		9.1		7.4

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		3.2		4.2		5.7		7.2		8.3		8.8		8.5		7.6		6.1		4.4		3.3		2.8

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		16.2		12.2		13.9		16.8		18		18.4		18.8		18.4		17.6		17.5		17.2		13.6		11.9

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		16.2		12.6		14.1		16.2		17.2		17.9		19.1		18.3		16.7		17.2		17.8		14.4		12.6

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		14.8		8		10.7		14.5		17.9		20.1		21.5		20.6		18.3		16		13.1		9.1		7.4

Maximum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		6.1		3.3		4.4		5.9		7.5		8.6		9.1		8.9		7.9		6.4		4.9		3.6		3

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		14.1		16.7		20		21.1		20.7		20.9		20.4		19.9		20.5		22.7		16.8		14.2

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		20.9		15.3		18.3		21.4		22.9		22.6		23.9		22.5		20.9		22.2		26.4		19.1		15.7

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		12.1		6.8		7.8		12.8		14.7		14.2		18.8		17.8		15.2		13.8		10.2		7.2		5.8

Minimum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		5.3		3		3.9		5.1		6.5		7.8		8.2		8.1		7.2		5.5		3.2		2.9		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		12.8		9.8		9.2		14.5		14.6		13.1		16.6		16		14.6		14.7		12.5		9.8		8.5

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		10.8		9.2		7.5		12.7		11.6		8.8		14.7		13.5		11.5		12.7		10.9		8.9		7.9