HARNEY, SOUTH DAKOTA

Average Temperature

Years on Record: 8

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		6.2		-5.3		-2.7		0.8		4.4		10.4		15.6		17.7		18.3		13.4		6.7		-0.4		-3.9

Average High Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		13.4		2.2		4.5		8.1		11.1		17.1		22.2		24.9		25.7		21.4		14.1		6.2		3.2

Average Low Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		-0.9		-12.2		-10.2		-6.3		-2.2		3.7		8.4		10.5		10.3		5.6		-1.2		-7.1		-11.1

Highest Recorded Temperature

Years on Record: 8

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		35.6		17.8		21.1		24.4		26.7		33.3		32.8		35.6		34.4		33.3		29.4		22.2		19.4

Lowest Recorded Temperature

Years on Record: 8

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		-35.6		-31.1		-35.6		-27.2		-16.7		-5		---		3.3		0.6		-6.1		-20		-24.4		-35

Average Number of Days Above 90F/32C

Years on Record: 8

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		5.7		---		---		---		---		0.1		0.6		1.6		3		0.4		---		---		---

Average Number of Days Below 32F/0C

Years on Record: 8

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		194.7		30		27.4		28.1		21.1		6.4		0.1		---		---		3.4		18.3		29.1		30.6

Average Number of Days Below 0F/-17C

Years on Record: 8

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		21		8.4		4.4		1.9		---		---		---		---		---		---		0.3		1		5

Average Precipitation

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		685		14		22		35		81		155		109		73		60		40		54		25		17

Average Number of Days With Precipitation

Years on Record: 8

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		83		3		4		5		10		12		12		12		7		6		6		3		3

Most Reported Precipitation in a Month

Years on Record: 8

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		245		27		30		68		126		245		217		114		120		69		147		39		27

Least Reported Precipitation in a Month

Years on Record: 8

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		---		2		3		7		25		63		49		24		27		18		8		9		---

Most Precipitation Reported in a Day

Years on Record: 8

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		86.6		17.8		16.8		34.3		33.5		86.6		61.7		34.3		48.3		33		54.1		15.2		11.7

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

Years on Record: 8

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		57		2		3		3		7		9		9		7		5		4		4		2		2

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

Years on Record: 8

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		17		---		1		1		2		4		2		2		2		1		1		1		---

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

Years on Record: 8

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

Average Snowfall

Years on Record: 8

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		143.3		13.7		15		22.9		36.6		3.6		---		---		---		0.8		14.7		14		22.1

Most Snow Reported in a Month

Years on Record: 8

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		67.3		42.2		32.8		41.1		67.3		14		---		---		---		6.3		36.8		30.5		64.8

Heating Degree Days

Years on Record: 8

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		2905.6		560		435.6		371.1		253.9		101.7		15.6		1.7		4.4		48.3		200		394.4		518.9

Cooling Degree Days

Years on Record: 8

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		91.1		---		---		---		---		2.2		11.7		30		37.8		9.4		---		---		---

Growing Degree Days

Years on Record: 8

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		776.4		---		---		---		---		12.1		166.7		237.7		256.6		103.3		---		---		---

Average Length of Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		12.7		9.9		11		12.5		14		15.3		16		15.6		14.4		12.9		11.4		10.2		9.5

Average Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		14.6		6.1		9.2		12.9		17.5		21.3		23.6		23.8		20.8		16.3		11.1		7		5.4

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		2.3		3.3		4.9		6.5		7.7		8.1		7.5		6.5		5		3.6		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		16.9		12.1		14.6		16.4		18.3		19.6		20.5		21.2		20.8		19.3		16.6		12.7		10.8

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		18.7		12.4		15.3		16.4		19.1		21.9		24.6		26.1		24.1		21.4		17.5		13.5		12.3

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		14.6		6.1		9.2		12.9		17.5		21.3		23.6		23.8		20.8		16.3		11.1		7		5.4

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		2.4		3.5		5.2		7		8.3		8.8		8.5		6.9		5.8		4		2.7		2.1

Maximum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		19.9		15.4		17.2		19.9		23.2		22.3		23		23.4		23.1		21.7		19.2		16.2		14.5

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		24.1		16.7		19.4		22.2		28.4		27.8		30.9		31.6		29.2		25.5		21.4		18.3		18

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		12		5.1		6.7		10.8		14.7		14.9		21.1		19.8		19.4		12.5		9.5		5.3		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		4.4		2		2.9		4.4		5.3		7		7.2		6.6		5.6		4.5		3.3		2.2		1.6

Minimum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		13.2		9.3		9.5		13		15.1		13.6		18.4		17.6		19.2		14		13.4		8.9		6.8

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		12.6		8.8		8.1		11.5		13.5		10.6		19.6		18		21		12.8		13		8		6.7