BLACKBURN, ENGLAND

Average Temperature

Years on Record: 21

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		50		41		40.1		44.6		47.3		53.6		56.3		61.7		60.8		55.4		50.9		45.5		41

Average High Temperature

Years on Record: 21

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		55.4		44.6		44.6		50		53.6		60.8		62.6		68		68		60.8		55.4		50		44.6

Average Low Temperature

Years on Record: 21

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		44.6		37.4		35.6		39.2		41		46.4		50		55.4		53.6		50		46.4		41		37.4

Highest Recorded Temperature

Years on Record: 21

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		93.2		57.2		59		66.2		73.4		78.8		84.2		86		93.2		78.8		77		60.8		59

Lowest Recorded Temperature

Years on Record: 21

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		15.8		23		23		26.6		28.4		30.2		37.4		44.6		41		37.4		28.4		21.2		15.8

Average Number of Days Below 32F/0C

Years on Record: 10

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		53.5		11.8		12.2		10.2		3.9		0.4		---		---		---		---		2.8		4.1		8.1

Average Precipitation

Years on Record: 35

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in.		39.5		3.8		2.7		2.2		2.2		2.6		2.7		3.6		4.2		3.9		4.3		3.9		3.6

Average Number of Days With Precipitation

Years on Record: 21

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		232		21		19		21		19		15		18		18		19		20		21		21		20

Average Number of Rainy Days

Years on Record: 35

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		96		9.6		7.8		6.2		6.3		6.8		6.9		8.3		8.9		8.5		8.9		8.5		9.3

Average Snowfall

Years on Record: 10

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in.		11.3		3.6		5.2		0.3		---		---		---		---		---		---		---		---		2.2

Average Number of Days With Snow

Years on Record: 21

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		16		3		4		2		1		---		---		---		---		---		1		1		4

Average Relative Humidity

Years on Record: 21

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		79		84		83		80		77		75		78		76		76		80		82		86		85

Average Dew Point

Years on Record: 10

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		44		36		34		37		39		44		50		54		53		51		46		41		38

Heating Degree Days

Years on Record: 21

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		5511.8		744		703.4		632.4		531		353.4		261		102.3		130.2		288		437.1		585		744

Growing Degree Days

Years on Record: 21

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		1188		---		---		---		---		111.6		189		362.7		334.8		162		27.9		---		---

Average Length of Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		13		8.8		10.5		12.5		14.7		16.8		17.9		17.3		15.4		13.2		11.1		9.2		8.2

Average Number of Days With Fog

Years on Record: 21

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		27		5		3		1		1		1		2		1		1		2		2		3		5

Average Wind Speed

Years on Record: 21

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mph		10		12.4		11.8		11.8		10.6		8.7		8.7		8.7		8.7		8.7		9.3		10		10.6

Highest Reported Wind Gust

Years on Record: 21

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mph		44.8		44.8		42.9		41.7		32.3		27.4		25.5		29.9		34.8		29.9		32.3		34.8		41.7

Average Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		2.4		0.6		1.2		2.1		3.2		4.3		4.3		4.2		3.5		2.5		1.3		0.7		0.4

Average Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.5		0.4		0.8		1.3		2		2.5		2.7		2.6		2.2		1.5		0.8		0.5		0.3

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		2.5		1		1.8		2.5		3.2		3.9		3.7		3.7		3.4		2.8		1.8		1.2		0.8

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		2		0.8		1.5		1.8		2.3		3.2		2.9		2.9		2.6		2.2		1.5		1		0.7

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		2.4		0.6		1.2		2.1		3.2		4.3		4.3		4.2		3.5		2.5		1.3		0.7		0.4

Maximum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.6		0.5		0.9		1.5		2.1		2.6		2.8		2.7		2.3		1.6		1		0.6		0.4

Maximum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		3.3		1.5		2.4		3.7		4.2		4.5		4.7		4.7		4.9		3.5		2.6		1.5		1.1

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		3.1		1.4		2.1		3.3		3.8		4.3		4.8		4.8		5		3.1		2.3		1.4		1

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.9		0.4		0.9		1.7		2.5		3.6		3.6		3.6		3		2.1		1		0.5		0.4

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		0.4		0.6		1.2		1.8		2.4		2.6		2.5		2.1		1.4		0.7		0.4		0.3

Minimum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.9		0.7		1.2		1.8		2.4		3.3		3.1		3.1		2.8		2.2		1.2		0.7		0.6

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.3		0.5		0.9		1.1		1.4		2.2		1.8		2		1.8		1.5		0.9		0.5		0.4