ONAKA, SOUTH DAKOTA

Average Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		7.2		-9.9		-6.2		-0.1		7.4		14.1		19.4		22.9		21.9		16.2		8.8		-1		-7.8

Average High Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		-16.7		-0.4		5.9		14.6		21.3		26.8		30.9		29.9		24.4		16.2		4.5		-2.3		13.9

Highest Recorded Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		36		3.3		6.2		11.5		19.9		25.9		33.4		36		33.8		28.2		18.9		13.1		4.7

Average Precipitation

Years on Record: 100

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		462		11		12		22		45		65		89		64		55		41		32		14		11

Average Number of Days With Precipitation

Years on Record: 100

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		62		3		3		5		6		8		9		7		6		5		4		3		3

Most Reported Precipitation in a Month

Years on Record: 100

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		234		70		76		92		142		173		234		187		193		212		187		80		107

Least Reported Precipitation in a Month

Years on Record: 100

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		---		---		---		---		---		7		12		5		2		---		---		---		---

Most Precipitation Reported in a Day

Years on Record: 100

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		136.1		22.9		61		55.6		72.9		82.5		129.5		104.7		99.1		136.1		64.5		27.9		88.9

Avg. No. of Days w/Precip. Above 0.1in/2.5mm

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		38.7		1.2		1.2		2.7		3.7		5.4		6		4.8		3.9		3.6		3.4		1.7		1.1

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

Years on Record: 100

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		39		1		2		2		4		5		6		5		4		4		3		2		1

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

Years on Record: 100

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		10		---		---		---		1		2		2		2		1		1		1		---		---

Avg. No. of Days w/Precip. Above 0.5in/13mm

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		12.5		0.1		0.1		0.5		1		2.1		2.5		2.1		1.3		1.4		1		0.2		0.2

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

Years on Record: 100

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

Average Snowfall

Years on Record: 100

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		65.3		10.2		12.7		12.9		7.6		0.2		---		---		---		---		1.5		8.6		11.4

Average Number of Days With Snow

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		12		2		2		2.2		1.2		---		---		---		---		---		0.2		2		2.4

Most Snow Reported in a Month

Years on Record: 100

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		83.8		83.8		76.2		55.4		69.8		10.2		---		---		---		6.3		36.8		63.8		53.3

Avg. No. of Days w/Snow Above 1in/2.5cm

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		10		1.6		1.8		1.8		1.1		---		---		---		---		---		0.2		1.6		1.9

Avg. No. of Days w/Snow Above 3in/7.5cm

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		3.9		0.5		0.6		0.7		0.6		---		---		---		---		---		---		0.9		0.6

Avg. No. of Days w/Snow Above 5in/12.7cm

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		1.7		0.1		0.3		0.3		0.3		---		---		---		---		---		---		0.4		0.3

Avg. No. of Days w/Snowfall Above 10in/25cm

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		0.2		---		0.1		---		0.1		---		---		---		---		---		---		---		---

Avg. # of Days w/Snow Depth Above 1in/2.5cm

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		52		14.6		9.3		8.3		1.9		0.1		---		---		---		---		0.3		5.6		11.9

Avg. # of Days w/Snow Depth Above 3in/7.5cm

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		31.1		8.6		5.6		4.7		1		---		---		---		---		---		0.1		2.8		8.3

Avg. # of Days w/Snow Depth Above 5in/12.7cm

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		19		5		3.6		3		0.7		---		---		---		---		---		---		1.9		4.8

Avg. # of Days w/Snow Depth Above 10in/25cm

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		7.9		2.7		0.6		0.7		0.2		---		---		---		---		---		---		0.7		3

Heating Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		4460.6		875.6		686.1		572.8		328.9		146.1		42.2		15.6		13.3		92.8		295.6		581.1		810.6

Cooling Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		397.8		---		---		---		1.1		15		73.3		156.1		123.9		28.3		---		---		---

Growing Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		1364		---		---		---		---		127.4		281.7		399.6		368.6		186.7		---		---		---

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		13.9		5.8		8.6		12.6		17.4		20.4		22.5		22.8		19.9		15		10.3		6.3		4.9

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		2.2		3.2		4.8		6.4		7.9		8.4		7.8		6.6		5.2		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		16.2		11.9		13.9		16.5		18.2		18.8		19.5		20.3		19.9		17.8		15.4		11.9		10.2

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		17.5		12.1		14		16.3		19.3		20.5		22.5		24.1		22.6		19		16.1		12.2		11.3

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		13.9		5.8		8.6		12.6		17.4		20.4		22.5		22.8		19.9		15		10.3		6.3		4.9

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		8.9		8.6		7.2		5.7		3.9		2.6		1.9

Maximum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		19.4		14		17.8		20.2		23		22		22.5		22.2		23.1		21.6		18		15.5		12.6

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		23.1		14.8		19.5		21.5		28.1		27.5		29.8		28.7		29.3		25.4		19.8		17.4		14.8

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		11.1		5.1		7.5		8.3		14.4		14.9		19.8		17.8		17.1		11.4		8.5		4.5		3.9

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		2.8		4.4		5.3		7		7.4		7.1		5.6		4.4		3.3		2.1		1.7

Minimum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		12.3		9.9		11.2		9.9		14.7		13.6		17.2		15.9		16.8		12.7		11.7		7.2		7.2

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		11.3		9.6		10.7		7.1		13.2		10.8		17.5		14.8		16.7		11		11.1		6.2		7.2