HERRON, MICHIGAN

Average Temperature

Years on Record: 95

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		6.2		-7.2		-7.1		-2.2		4.8		11.2		16.7		19.4		18.3		14.2		8.3		2		-4.2

Average High Temperature

Years on Record: 95

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		12.1		-2.6		-1.7		3.2		10.9		18.3		23.9		26.6		25.3		20.7		14.2		6.2		-0.3

Average Low Temperature

Years on Record: 95

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		0.3		-11.9		-12.4		-7.7		-1.2		4.1		9.4		12.2		11.4		7.7		2.6		-2.3		-8.2

Highest Recorded Temperature

Years on Record: 95

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		41.1		16.7		18.3		27.8		32.2		34.4		40		41.1		38.9		37.2		32.2		25		18.3

Lowest Recorded Temperature

Years on Record: 95

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		-38.3		-33.3		-38.3		-32.8		-21.7		-6.7		-2.8		1.1		-1.7		-5		-11.1		-21.1		-32.8

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
mm		742		45		37		52		62		72		73		75		79		81		60		59		48

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
mm		264		105		125		187		142		211		213		182		159		264		166		189		129

Least Reported Precipitation in a Month

Years on Record: 95

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		3		4		3		8		13		12		5		6		17		7		5		16		10

Most Precipitation Reported in a Day

Years on Record: 95

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		130.6		46.5		72.6		47		41.7		56.1		64		71.1		75.2		130.6		87.4		58.4		57.9

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
mm		130		40		70		40		40		50		60		70		70		130		50		50		50

Most Rain Reported in a Month

Years on Record: 81

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		990		90		120		140		140		210		210		180		150		260		160		180		120

Least Rain Reported in a Month

Years on Record: 81

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		430		---		---		---		10		10		---		---		10		---		---		10		---

Average Snowfall

Years on Record: 95

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		193.3		48.8		38.1		31.8		10.9		1		---		---		---		---		1.5		18		43.2

Most Snow Reported in a Month

Years on Record: 95

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		139.2		110.5		89.7		125.5		42.4		22.6		---		---		---		0.5		21.6		88.4		139.2

Heating Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		4596.7		804.4		713.9		629.4		405		218.9		83.3		25.6		45.6		148.3		326.1		498.3		697.8

Cooling Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		161.1		---		---		---		1.7		7.2		30		63.9		45.6		12.2		0.6		---		---

Growing Degree Days

Years on Record: 95

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		912.3		---		---		---		---		36.2		200		291.1		258.3		126.7		---		---		---

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
Mj/m2		13.4		4.6		7.8		12.5		17.1		20.8		22.8		22.9		19.6		14.5		9.3		5.2		3.9

Average Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		5.1		2.3		3.4		4.8		6.5		7.8		8.3		7.7		6.7		5.3		3.8		2.5		1.9

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		15		8.5		12.2		16.3		18		19.1		19.8		20.4		19.5		17.1		13.3		8.6		7.2

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		15.9		7.9		11.6		15.9		18.8		21.2		23.2		24.6		21.8		17.9		13.2		8.2		7.2

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		4.6		7.8		12.5		17.1		20.8		22.8		22.9		19.6		14.5		9.3		5.2		3.9

Maximum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		5.4		2.3		3.4		5.1		6.9		8.3		9		8.6		7.1		5.7		3.9		2.6		2

Maximum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		18.2		10.4		15.8		21		22.1		22.4		22.1		23.3		22		22.8		16.5		11.7		8.8

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		21.6		10.2		16.6		23.4		26.3		28.4		28.9		31.5		26.9		27.6		17.6		12.3		9.5

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		11.2		3.7		6.7		10.3		14.7		17		17.8		17.5		18.1		12.5		8.1		4.2		3.4

Minimum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		4.5		2.2		3.1		4.1		5.6		6.8		7.5		6.6		6		4		3.5		2.5		1.9

Minimum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		12.2		6.3		9.9		13		15.1		15.6		15.5		15.6		17.9		14.2		11.1		6.4		5.7

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		11.2		5.3		8.6		10.9		13.7		14.1		14		14.3		18.7		13.2		10		5.5		5.3