IRVINE, PENNSYLVANIA

Average Temperature

Years on Record: 118

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		8.8		-3.7		-3.4		1.4		7.7		13.8		18.8		21		20.2		16.7		10.5		4.3		-1.7

Average High Temperature

Years on Record: 118

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		14.7		0.9		1.7		7.1		14.3		21		25.7		27.8		26.8		23.3		16.8		9		2.4

Average Low Temperature

Years on Record: 118

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		2.9		-8.3		-8.7		-4.2		1.2		6.6		11.8		14.2		13.5		10.1		4.2		-0.4		-5.7

Highest Recorded Temperature

Years on Record: 118

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		37.8		23.3		22.8		28.3		33.3		35		36.7		37.2		37.8		37.8		32.2		28.9		23.3

Lowest Recorded Temperature

Years on Record: 118

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		-36.7		-32.2		-36.7		-31.1		-17.8		-6.7		-1.7		2.2		-1.1		-3.3		-10		-17.2		-30

Average Number of Days Above 90F/32C

Years on Record: 118

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		9		---		---		---		---		0.3		2.1		3.8		2.1		0.7		---		---		---

Average Number of Days Below 32F/0C

Years on Record: 118

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		148.4		28		26		24.7		14.3		3.5		0.1		---		---		0.5		6.8		17.7		26.7

Average Number of Days Below 0F/-17C

Years on Record: 118

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		8.7		3.5		3.3		0.8		---		---		---		---		---		---		---		---		1.1

Average Precipitation

Years on Record: 118

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		1108		75		63		84		93		104		117		112		99		96		87		93		85

Average Number of Days With Precipitation

Years on Record: 118

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		162		17		14		15		14		13		12		11		10		11		13		15		17

Most Reported Precipitation in a Month

Years on Record: 118

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		312		184		153		184		192		252		235		312		249		211		213		240		191

Least Reported Precipitation in a Month

Years on Record: 118

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		3		28		9		21		26		14		29		28		17		14		3		25		31

Most Precipitation Reported in a Day

Years on Record: 118

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		118.4		57.7		81.3		70.1		61		81.3		109		100.1		94		107.7		118.4		74.7		102.1

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

Years on Record: 118

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		102		9		7		9		9		9		9		8		7		7		8		10		10

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

Years on Record: 118

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		27		1		1		2		2		3		3		3		3		3		2		2		2

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

Years on Record: 118

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		6		---		---		---		---		1		1		1		1		1		1		---		---

Average Number of Rainy Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		170.4		18.1		15		16.1		15.1		13.3		12.1		11.5		10.7		11.4		13.3		16.4		18.1

Most Rain Reported in a Day

Years on Record: 71

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		110		30		80		40		60		60		100		90		90		70		110		70		50

Most Rain Reported in a Month

Years on Record: 71

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		1450		180		130		150		190		250		230		270		240		210		210		230		180

Least Rain Reported in a Month

Years on Record: 71

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		700		20		---		30		20		10		20		20		20		10		10		30		30

Average Snowfall

Years on Record: 118

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		167.9		39.4		33		26.4		7.9		0.2		---		---		---		---		2		19.6		39.4

Most Snow Reported in a Month

Years on Record: 118

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		131.3		118.4		92.5		92		45		10.2		---		---		---		0.5		27.7		94.2		131.3

Heating Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		3723.9		706.7		605		520.6		319.4		157.8		37.2		6.1		15		70		250		421.7		614.4

Cooling Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		244.4		---		---		---		---		15		46.1		90		78.3		13.9		1.1		---		---

Growing Degree Days

Years on Record: 118

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		1252.1		---		---		---		---		117.1		263.3		341		315.2		200		15.5		---		---

Average Length of Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		12.7		10.1		11.1		12.5		13.9		15.1		15.7		15.4		14.3		12.9		11.5		10.3		9.7

Average Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		12.8		6		9.1		12		15.4		18		20.4		20.4		17.8		14.3		9.6		5.8		4.9

Average Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		5.6		2.6		3.7		5.3		7.1		8.3		8.9		8.5		7.3		5.7		4.2		2.9		2.3

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		14.2		10.6		13.3		14.4		15.7		16.5		17.9		18.1		17.4		16.1		12.8		8.8		8.6

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		13.7		10.3		13.1		13.2		14.3		15.3		18.1		18.7		17.2		15.8		12		8.2		8.3

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		12.8		6		9.1		12		15.4		18		20.4		20.4		17.8		14.3		9.6		5.8		4.9

Maximum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		5.7		2.7		3.8		5.4		7.2		8.5		9.1		8.8		7.6		6		4.3		3		2.3

Maximum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		16.7		12.9		16.3		17.5		17.9		19.6		19.8		19.9		20.3		20		14.9		11.4		10.5

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		17.9		13.2		17.2		17.7		17.9		21.2		22.4		22.4		22.8		22.2		14.9		11.6		10.7

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		10.7		4.5		7.6		10.1		13		14.1		17.7		17.7		16.2		11.6		7.2		3.9		4.2

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		2.5		3.4		5		6.8		7.9		8.5		8.1		6.7		5.1		4.1		2.6		2.3

Minimum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		11.3		6.8		10.3		11.5		13		12.9		15.6		15.8		15.7		12.5		8.9		5.2		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		9.4		5.7		9.4		9.3		10.1		9.2		13.5		14		14.2		10.3		7		3.8		6.2