NATIONAL MINE, MICHIGAN

Average Temperature

Years on Record: 52

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		4.2		-10.6		-9.6		-4.4		3.1		10.3		15.5		18.3		17.2		12.6		6.4		-0.9		-7.6

Average High Temperature

Years on Record: 52

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		9.6		-6.1		-4.2		1.2		8.7		16.6		21.9		24.6		23.2		18.2		11.2		2.9		-3.7

Average Low Temperature

Years on Record: 52

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		-1.2		-15.1		-14.9		-10.1		-2.6		3.9		9.1		12.1		11.2		7.1		1.6		-4.7		-11.4

Highest Recorded Temperature

Years on Record: 52

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		37.2		11.7		16.1		21.1		33.3		35		37.2		37.2		35.6		33.9		30.6		21.7		15

Lowest Recorded Temperature

Years on Record: 52

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		-36.7		-35.6		-36.7		-34.4		-22.8		-8.3		-3.9		1.1		-0.6		-6.1		-12.8		-25		-33.3

Average Number of Days Above 90F/32C

Years on Record: 52

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		3.1		---		---		---		---		0.2		0.7		1.4		0.7		0.2		---		---		---

Average Number of Days Below 32F/0C

Years on Record: 52

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		193		30.9		28		29.1		22.3		8.6		0.7		---		---		2.6		14.2		25.9		30.5

Average Number of Days Below 0F/-17C

Years on Record: 52

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		34.8		11.2		10.8		5.4		0.3		---		---		---		---		---		---		0.5		6.7

Average Precipitation

Years on Record: 52

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		895		58		49		71		71		79		83		74		80		99		93		74		65

Average Number of Days With Precipitation

Years on Record: 52

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		159		17		13		14		11		11		12		11		11		13		14		15		17

Most Reported Precipitation in a Month

Years on Record: 52

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		311		168		136		154		167		201		311		142		218		193		196		210		176

Least Reported Precipitation in a Month

Years on Record: 52

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		2		11		12		7		23		2		16		14		11		31		24		21		9

Most Precipitation Reported in a Day

Years on Record: 52

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		118.1		56.1		38.9		61.5		78.5		80		103.9		62.7		60.7		109		118.1		55.4		58.4

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

Years on Record: 52

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		79		7		5		6		6		6		7		6		6		8		8		7		7

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

Years on Record: 52

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		22		1		1		2		2		2		2		2		2		3		2		2		1

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

Years on Record: 52

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		7		---		---		1		---		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		161.2		16.7		12.9		13.4		11.5		10.6		12		10.4		11.5		13.8		13.9		15.3		17.5

Most Rain Reported in a Day

Years on Record: 38

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

Most Rain Reported in a Month

Years on Record: 38

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		1310		130		90		150		160		200		310		140		210		190		190		200		170

Least Rain Reported in a Month

Years on Record: 38

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		590		10		10		---		20		---		10		10		10		30		20		20		---

Average Snowfall

Years on Record: 52

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		451.9		97.3		78.2		75.4		31		3.6		---		---		---		0.2		13.7		54.1		98.3

Most Snow Reported in a Month

Years on Record: 52

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		233.4		232.9		233.4		211.1		140.2		57.4		---		---		---		4.3		47.2		124.2		209.8

Heating Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		5395.6		921.7		780.6		711.1		477.2		260		111.1		51.1		74.4		193.3		388.9		601.7		824.4

Cooling Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		92.8		---		---		---		---		6.7		16.7		40		27.8		1.7		---		---		---

Growing Degree Days

Years on Record: 52

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		734.1		---		---		---		---		8.6		165		258.3		223.9		78.3		---		---		---

Average Length of Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		12.8		9.7		10.9		12.5		14.2		15.7		16.4		16		14.6		13		11.4		9.9		9.2

Average Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		13.3		3.8		7.1		12.3		17.8		22		23.5		22.9		20		14.1		8.7		4.5		3.2

Average Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		5.9		2.5		3.8		6.2		7.6		8.9		9.4		9.1		8		6.4		4.4		2.8		2.1

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		14.4		6.3		10.6		15.9		18.8		20.2		20.4		20.4		19.9		16.2		11.7		7.2		5.2

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		14.2		5		9		13.4		18.5		21.9		23		22.6		20.9		15.2		10.9		5.9		4.3

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		13.3		3.8		7.1		12.3		17.8		22		23.5		22.9		20		14.1		8.7		4.5		3.2

Maximum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		6.3		2.7		4.4		6.5		7.8		9.5		9.7		10		8.3		6.7		4.9		3.2		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		16.8		7.5		13.3		18.5		22		23.5		22.8		23.9		22.3		18.2		13.6		9.2		6.5

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		17.3		6.4		11.7		16.2		23.3		26.7		27.1		27.6		24.2		17.9		13		8.1		5.7

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		11.3		2.8		5.4		9.1		15.4		19.6		20.5		19.2		17.7		11.9		7.3		3.6		2.5

Minimum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		5.6		2		3.2		5.5		7.5		8.8		9.3		9		7.9		6.1		4		2.4		1.8

Minimum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		11.8		4.1		7.7		11.2		15.8		18		17.8		17.1		17.5		13.4		9.7		5.2		3.7

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		10.6		3		6		7.8		14		17.7		17.9		16.4		16.9		11.7		8.6		3.9		2.7