LANCASTER, PENNSYLVANIA

Average Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		11.2		-1.6		-0.2		4.8		10.4		15.9		21.2		23.4		22.6		18.3		11.9		6.4		0.9

Average High Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		16.7		3.1		4.6		10.3		16.5		21.9		27.1		29.2		28.3		24		17.8		11.6		5.3

Average Low Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		5.8		-6.2		-5.1		-0.7		4.4		9.9		15.4		17.7		16.9		12.6		6.1		1.2		-3.6

Highest Recorded Temperature

Years on Record: 54

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		41		25		25		31		34		36		39		40		41		37		35		27		22

Lowest Recorded Temperature

Years on Record: 54

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		-32		-32		-27		---		-11		-2		---		5		3		-2		-7		-21		-22

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		0.1		---		---		---		---		---		---		0.1		---		---		---		---		---

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		10.5		---		---		---		---		---		2.2		5.2		2.9		0.3		---		---		---

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		81.8		---		---		---		1.5		5.8		18.3		25		22.6		7.7		0.9		---		---

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		146.2		---		---		1.1		6.9		17.3		27.7		30.7		30.1		23.2		8.5		0.5		0.2

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		202.5		0.9		0.8		6.5		16.4		27.9		29.9		31		31		29.4		20.1		7.2		1.4

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		254.7		4		4.2		14.4		25.8		30.9		30		31		31		30		29.6		18.5		5.3

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		308.8		11		13.7		26.7		29.6		31		30		31		31		30		30.9		27.6		16.3

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		357.9		31		28		31		30		30.9		29.3		27.6		28.5		29.5		31		30		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		292.8		31		28		31		29.8		27.4		14.3		7.1		9.3		23.6		30.3		30		31

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		227.4		31		28		30.7		27.3		15.8		1.8		---		0.5		7.5		25		28.7		31

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		170.6		30.5		27.5		27.4		16.5		3.1		---		---		---		0.8		12.3		22.9		29.7

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		112.9		27.7		24.7		17.5		3.7		0.2		---		---		---		---		1.5		12.7		24.9

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		36.3		14.7		9.9		2.5		0.1		---		---		---		---		---		---		1.4		7.6

Average Number of Days Below 10F/-12C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		7.2		3.8		2.1		0.2		---		---		---		---		---		---		---		---		1.2

Average Number of Days Below 0F/-17C

Years on Record: 12

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Average Precipitation

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		1066.8		66		63.5		86.4		91.4		101.6		96.5		111.8		86.4		109.2		91.4		88.9		78.7

Average Precipitable Water

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm.		2		1		1		1.2		1.5		2.2		3		3.4		3.3		2.7		1.9		1.5		1.1

Average Number of Rainy Days

Years on Record: 64

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		74		6		5		6		6		6		6		7		7		5		5		4		6

Average Snowfall

Years on Record: 51

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		69		18		19		15		3		---		---		---		---		---		---		2		11

Average Dew Point

Years on Record: 12

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		4		-6		-6		-3		2		8		13		16		16		13		6		---		-5

Heating Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		5502		1110		935		756		432		179		24		1		4		78		364		645		975

Cooling Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		842		---		---		---		6		45		180		286		243		75		7		---		---

Growing Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		3167		1		1		19		110		337		606		750		703		448		156		30		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		10.2		11.2		12.5		13.8		14.9		15.5		15.2		14.2		12.9		11.6		10.4		9.9

Average Total Sky Cover

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		54.3		61.8		57.1		56.7		55.4		53.2		53.2		49.3		49.8		50		49.3		57.1		59.4

Average Opaque Sky Cover

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		50.5		58.5		53		53.7		52.1		49.6		48.2		43.9		44.3		46.5		46.2		53.4		56.2

Average Wind Speed

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
km/h		12.3		14.4		14.7		15.3		14.3		12.2		11.2		9.8		8.6		10.1		10.8		12.4		13.7

Average Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		13.4		6.8		9.9		13		15.9		18.6		19.9		20		17.8		14.8		11.3		7.3		5.9

Average Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		5.7		2.8		3.8		5.5		7.2		8.3		8.9		8.5		7.5		5.9		4.3		3.1		2.5

Average 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		11.3		13.8		15.3		16.1		17.1		17.4		17.9		17.3		16.4		15.2		11.3		10.1

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		14.5		11.3		14		14.3		14.5		16.1		16.9		17.7		16.6		15.9		15.1		11.3		10.2

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		13.4		6.8		9.9		13		15.9		18.6		19.9		20		17.8		14.8		11.3		7.3		5.9

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		2.9		4		5.7		7.3		8.6		9.1		8.8		7.7		6.2		4.5		3.2		2.6

Maximum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		17.9		13.8		17.5		18.2		18.7		20.3		20.1		20		19.6		19.9		19.6		14.6		12.8

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		19.4		14.5		19.4		18.8		18.9		22.5		22.5		22.2		20.9		21.7		21.7		16		13.5

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		11.1		5.9		8.5		11.5		13.4		13		15.6		17.1		16.1		12.5		9.6		5.9		4.5

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		2.7		3.4		5.1		6.9		7.8		8.4		8.1		7.1		5.3		3.6		2.8		2.4

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		9.2		11.1		13.2		13.3		11.9		13.8		15.4		15.6		13.5		12.3		8.3		6.9

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		8.5		10.3		11.2		10.2		7.6		10.2		12.9		13.5		11.4		11.1		7.3		6.1