HERRON, MICHIGAN

Average Temperature

Years on Record: 95

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		43.1		19		19.2		28		40.7		52.1		62		66.9		65		57.6		47		35.6		24.4

Average High Temperature

Years on Record: 95

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		53.7		27.3		28.9		37.8		51.6		64.9		75.1		79.8		77.5		69.2		57.6		43.2		31.5

Average Low Temperature

Years on Record: 95

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		32.5		10.6		9.6		18.2		29.8		39.3		48.9		54		52.6		45.9		36.6		27.9		17.2

Highest Recorded Temperature

Years on Record: 95

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		106		62		65		82		90		94		104		106		102		99		90		77		65

Lowest Recorded Temperature

Years on Record: 95

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		-37		-28		-37		-27		-7		20		27		34		29		23		12		-6		-27

Average Number of Days Above 90F/32C

Years on Record: 95

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		7.5		---		---		---		---		0.4		1.8		2.8		1.8		0.6		---		---		---

Average Number of Days Below 32F/0C

Years on Record: 95

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		177.2		30.2		27.6		28.4		19.6		6.9		0.6		---		0.1		2.3		11.2		21.5		29

Average Number of Days Below 0F/-17C

Years on Record: 95

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		19.7		6.9		7.1		2.8		---		---		---		---		---		---		---		0.2		2.6

Average Precipitation

Years on Record: 95

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		29.2		1.8		1.4		2		2.4		2.8		2.9		3		3.1		3.2		2.4		2.3		1.9

Average Number of Days With Precipitation

Years on Record: 95

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		141		14		11		11		11		12		11		10		10		12		12		13		14

Most Reported Precipitation in a Month

Years on Record: 95

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		10.4		4.1		4.9		7.4		5.6		8.3		8.4		7.2		6.3		10.4		6.5		7.5		5.1

Least Reported Precipitation in a Month

Years on Record: 95

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		0.1		0.2		0.1		0.3		0.5		0.5		0.2		0.2		0.7		0.3		0.2		0.6		0.4

Most Precipitation Reported in a Day

Years on Record: 95

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		5.1		1.8		2.9		1.8		1.6		2.2		2.5		2.8		3		5.1		3.4		2.3		2.3

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

Years on Record: 95

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		68		5		4		5		6		6		6		6		6		7		6		6		5

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

Years on Record: 95

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		17		1		1		1		1		2		2		2		2		2		1		1		1

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

Years on Record: 95

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		3		---		---		---		---		---		---		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		143.2		13.5		11.2		11.6		11.7		11.3		10.4		9.9		10.4		12.4		12.2		13.6		14.4

Most Rain Reported in a Day

Years on Record: 81

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		5.1		1.8		2.9		1.7		1.6		2.2		2.5		2.8		3		5.1		2.1		2.3		2.3

Most Rain Reported in a Month

Years on Record: 81

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		39.2		3.9		4.9		5.7		5.6		8.3		8.4		7.2		6.3		10.4		6.5		7.4		5.1

Least Rain Reported in a Month

Years on Record: 81

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		17.1		0.2		0.2		0.3		0.5		0.5		0.2		0.2		0.7		0.3		0.2		0.6		0.4

Average Snowfall

Years on Record: 95

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		76.1		19.2		15		12.5		4.3		0.4		---		---		---		---		0.6		7.1		17

Most Snow Reported in a Month

Years on Record: 95

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		54.8		43.5		35.3		49.4		16.7		8.9		---		---		---		0.2		8.5		34.8		54.8

Heating Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		8274		1448		1285		1133		729		394		150		46		82		267		587		897		1256

Cooling Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		290		---		---		---		3		13		54		115		82		22		1		---		---

Growing Degree Days

Years on Record: 95

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		1642		---		---		---		---		65.1		360		523.9		465		228		---		---		---

Average Length of Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		12.8		9.8		11		12.5		14.1		15.5		16.2		15.8		14.5		13		11.4		10.1		9.4

Average Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		3.7		1.3		2.2		3.5		4.8		5.8		6.3		6.4		5.4		4		2.6		1.4		1.1

Average Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.4		0.6		0.9		1.3		1.8		2.2		2.3		2.2		1.9		1.5		1.1		0.7		0.5

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		4.2		2.4		3.4		4.5		5		5.3		5.5		5.7		5.4		4.7		3.7		2.4		2

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		4.4		2.2		3.2		4.4		5.2		5.9		6.5		6.8		6.1		5		3.7		2.3		2

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		3.7		1.3		2.2		3.5		4.8		5.8		6.3		6.4		5.4		4		2.6		1.4		1.1

Maximum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.5		0.6		1		1.4		1.9		2.3		2.5		2.4		2		1.6		1.1		0.7		0.6

Maximum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		5.1		2.9		4.4		5.8		6.1		6.2		6.2		6.5		6.1		6.3		4.6		3.3		2.4

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		6		2.8		4.6		6.5		7.3		7.9		8		8.8		7.5		7.7		4.9		3.4		2.7

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		3.1		1		1.9		2.9		4.1		4.7		4.9		4.9		5		3.5		2.3		1.2		0.9

Minimum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.3		0.6		0.9		1.1		1.6		1.9		2.1		1.8		1.7		1.1		1		0.7		0.5

Minimum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		3.4		1.7		2.7		3.6		4.2		4.3		4.3		4.3		5		3.9		3.1		1.8		1.6

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		3.1		1.5		2.4		3		3.8		3.9		3.9		4		5.2		3.7		2.8		1.5		1.5