RALPH, SOUTH DAKOTA

Average Temperature

Years on Record: 63

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		6.1		-9.4		-6.2		-1.5		5.9		11.9		17.1		21.1		20.4		13.9		7.2		-1.2		-6.9

Average High Temperature

Years on Record: 63

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		13.9		-2.4		0.7		5.4		13.9		19.9		24.8		29.8		29.8		23.3		16.1		6.1		0.1

Average Low Temperature

Years on Record: 63

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		-1.9		-16.3		-13.1		-8.4		-1.9		4.1		9.2		12.2		11		4.6		-1.5		-8.4		-13.8

Highest Recorded Temperature

Years on Record: 63

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		44.4		20.6		22.2		26.1		35		35		40		44.4		41.7		40.6		35		27.8		28.3

Lowest Recorded Temperature

Years on Record: 63

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		-41.1		-41.1		-41.1		-36.7		-22.2		-18.3		-3.3		---		-2.2		-10.6		-24.4		-30		-38.3

Average Number of Days Above 100F/38C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		2.6		---		---		---		---		---		0.1		1.6		0.8		0.1		---		---		---

Average Number of Days Above 90F/32C

Years on Record: 63

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		26.4		---		---		---		0.1		0.4		2.4		9.8		10.8		2.8		0.2		---		---

Average Number of Days Above 80F/26C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		77.7		---		---		---		1.4		4.3		11.4		23.8		24.1		11		1.4		0.1		---

Average Number of Days Above 70F/21C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		131		---		0.1		0.9		5.6		13.9		23.8		29.8		29.6		19.7		6.9		0.6		---

Average Number of Days Above 60F/15C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		179.2		0.3		1		4.5		13.5		24.3		28.9		31		30.8		26.5		14.8		3.5		0.2

Average Number of Days Above 50F/10C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		225.4		1.7		4.6		11.9		21.3		29.5		30		31		31		29.1		24.1		9.6		1.8

Average Number of Days Above 40F/4C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		275.3		8.7		11.5		19.8		27.4		30.7		30		31		31		29.9		28.8		17.4		9.2

Average Number of Days Below 70F/21C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		364.5		31		28		31		30		31		30		30.7		30.8		30		31		30		31

Average Number of Days Below 60F/15C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		348.1		31		28		31		30		30.9		28.1		22.4		25.6		29.2		31		30		31

Average Number of Days Below 50F/10C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		291.2		31		28		31		29.9		27.2		14.7		5.8		8.3		23.7		30.7		30		31

Average Number of Days Below 40F/4C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		231.9		31		28		30.9		26.3		14.2		3		0.2		1		10.7		25.9		29.8		31

Average Number of Days Below 32F/0C

Years on Record: 63

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		196.6		30.2		27.4		28.5		20.1		6.8		0.5		0.1		0.2		5.6		19.1		27.9		30.2

Average Number of Days Below 20F/-6C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		100.4		24.3		17.8		12.4		3.5		---		---		---		---		0.1		3.7		14.2		24.5

Average Number of Days Below 10F/-12C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		53.3		15.7		10.4		5		0.5		---		---		---		---		---		0.6		6.2		14.9

Average Number of Days Below 0F/-17C

Years on Record: 63

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		36.9		13		8.1		4		0.1		---		---		---		---		---		0.1		2.7		8.9

Average Precipitation

Years on Record: 63

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		387		9		9		16		38		65		87		51		38		30		26		12		8

Average Number of Days With Precipitation

Years on Record: 63

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		66		4		4		5		7		8		9		7		6		5		4		4		3

Most Reported Precipitation in a Month

Years on Record: 63

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		231		39		42		65		123		176		231		199		125		124		126		50		27

Least Reported Precipitation in a Month

Years on Record: 63

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		---		---		---		---		---		15		12		5		---		---		---		---		---

Most Precipitation Reported in a Day

Years on Record: 63

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		76.2		24.1		22.9		45		52.3		66		76.2		46.2		70.4		59.7		50.8		33.8		12.7

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		1.3		2.4		3.6		5.7		6.7		5.1		3.4		2.8		2.7		2.1		1.7

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

Years on Record: 63

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		38		1		1		2		4		6		7		5		4		3		2		2		1

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

Years on Record: 63

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		8		---		---		---		1		1		2		1		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		7.8		0.1		0.1		0.3		1.1		1.6		1.8		1.3		0.6		0.4		0.5		---		---

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

Years on Record: 63

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

Average Snowfall

Years on Record: 63

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		67.3		11.4		10.2		12.4		7.9		1.5		---		---		---		0.8		3		10.4		9.7

Most Snow Reported in a Month

Years on Record: 63

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		55.9		45		37.1		50.8		53.3		25.4		---		---		---		38.1		29.2		55.9		42.7

Heating Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		8043		1429		1176		1017		637		341		112		22		33		223		610		1033		1409

Cooling Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		510		---		---		---		1		11		66		206		186		39		1		---		---

Growing Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		2265		---		---		3		47		186		406		649		619		292		59		4		---

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		14.1		15.6		16.3		15.9		14.6		13		11.4		10		9.3

Average Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		14.1		5.5		8.8		12.7		17.4		20.8		23		23.7		20.3		15.3		10.2		6.2		4.8

Average Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		6.2		3.2		4.5		6.3		7		8.8		9.3		9.1		8		6.7		4.9		3.5		2.8

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		15.6		9.7		13.2		15.8		18.2		19.1		20		21.1		20.1		17.6		13.9		10.2		8.3

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		15.5		8.3		11.7		13.7		18.6		19.9		22.1		23.8		21.1		16.9		13.1		9		7.5

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		14.1		5.5		8.8		12.7		17.4		20.8		23		23.7		20.3		15.3		10.2		6.2		4.8

Maximum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		6.5		3.4		4.8		6.5		7.5		8.9		9.8		9.4		8.3		7.1		5.3		3.9		3.1

Maximum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		17.8		10.6		15.1		17.2		22.3		21.4		23.3		22.9		22.3		20.2		15.8		12.2		9.9

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		18.4		9.2		13.9		16		24.2		23.8		27.6		26.6		24.2		20.1		15.1		11.3		9.2

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		4.9		7		9.8		14.8		15.2		19.4		17.8		17.1		11.3		8.3		4.9		3.8

Minimum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		5.8		2.9		3.8		5.7		6.6		8.7		9.2		8.9		7.9		6		4.2		2.9		2.4

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		8.3		10.3		11.8		15.3		13.8		16.9		15.8		16.7		12.4		11		7.7		6.4

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		7		8.7		8.8		14.5		10.4		16.1		13.9		15.5		10.3		10		6.3		5.5