THIEF RIVER FALLS, MINNESOTA

Average Temperature

Years on Record: 73

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		3.3		-17.2		-13.8		-5.9		4.4		11.7		17.2		19.7		18.9		13.2		6.5		-3.2		-12.2

Average High Temperature

Years on Record: 73

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		9.5		-11.2		-7.7		-0.1		10.6		18.9		23.9		26.7		26.2		20.1		12.7		1.4		-7.2

Average Low Temperature

Years on Record: 73

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		-2.9		-23.1		-19.9		-11.8		-1.7		4.4		10.3		12.8		11.6		6.4		0.4		-7.9		-17.3

Highest Recorded Temperature

Years on Record: 73

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		42.2		4.4		11.7		29.4		32.8		37.8		38.9		42.2		37.2		37.2		32.2		21.7		12.2

Lowest Recorded Temperature

Years on Record: 73

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		-43.9		-43.9		-42.8		-37.2		-24.4		-10.6		-3.3		1.1		-1.1		-9.4		-23.9		-34.4		-40

Average Number of Days Above 90F/32C

Years on Record: 73

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		7.7		---		---		---		---		0.3		1.5		2.4		2.9		0.4		---		---		---

Average Number of Days Below 32F/0C

Years on Record: 73

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		193		30.8		28		29.9		19.8		7.2		0.4		---		0.1		3.4		15.1		27.6		30.7

Average Number of Days Below 0F/-17C

Years on Record: 73

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		65.7		22.7		16.6		7.8		0.2		---		---		---		---		---		0.1		3.4		15

Average Precipitation

Years on Record: 73

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		562		18		13		24		47		69		86		88		73		61		38		26		19

Average Number of Days With Precipitation

Years on Record: 73

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		80		5		4		5		6		8		11		9		8		8		6		5		5

Most Reported Precipitation in a Month

Years on Record: 73

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		331		76		62		85		190		331		217		187		245		166		181		89		65

Least Reported Precipitation in a Month

Years on Record: 73

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		---		---		---		---		1		---		9		20		14		7		---		1		---

Most Precipitation Reported in a Day

Years on Record: 73

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		190.5		31		31.8		38.1		69.8		190.5		67.3		109		74.9		67.3		80		31.8		19.3

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

Years on Record: 73

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		51		3		2		3		4		6		7		7		5		5		4		3		2

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

Years on Record: 73

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		13		---		---		---		1		2		2		2		2		2		1		1		---

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

Years on Record: 73

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

Average Precipitable Water

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm.		1.4		0.6		0.6		0.8		1		1.6		2.3		2.6		2.5		2		1.3		0.9		0.7

Average Number of Rainy Days

Years on Record: 35

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		44		1		1		2		3		5		6		6		5		4		2		2		1

Average Snowfall

Years on Record: 73

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		93.7		19.6		12.4		18.5		5.1		0.8		---		---		---		0.5		3.6		14.2		19.1

Most Snow Reported in a Month

Years on Record: 73

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		81.3		76.2		55.1		81.3		37.3		15.2		---		---		---		15.2		25.4		67.3		59.2

Average Dew Point

Years on Record: 13

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		-1		-19		-15		-10		-1		3		11		14		12		6		1		-6		-15

Heating Degree Days

Years on Record: 73

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		4127.2		928.9		750.6		580		255.6		84.4		9.4		1.1		2.2		55		205		480		775

Cooling Degree Days

Years on Record: 73

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		178.3		---		---		---		0.6		7.8		34.4		67.2		55		12.8		0.6		---		---

Growing Degree Days

Years on Record: 73

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		940.4		---		---		---		---		51.7		215		301.4		275.6		96.7		---		---		---

Average Length of Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		12.8		9.5		10.8		12.5		14.3		15.9		16.7		16.2		14.8		13		11.3		9.8		9

Average Total Sky Cover

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		53.2		59.1		56.8		56.6		49.1		52.4		51.3		40.9		41.3		48.9		53.3		62.2		65

Average Opaque Sky Cover

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		46.7		52.6		49.6		50.2		44.1		46.3		45		32.9		34.8		42.2		47		56		60.4

Average Wind Speed

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
km/h		16.3		16.7		16.7		17.3		18		18		15.2		13.4		14		15.6		17.2		17.4		17

Average Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		12.7		5		8.5		12.6		16.9		19.9		20.5		20.6		18.1		12.7		8.5		5.4		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		6.1		3		4.4		6.2		7.6		8.9		9.5		9.2		8		6.2		4.4		3.1		2.5

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		14.3		8.8		13.2		16.6		17.8		18.2		17.8		18.4		18		14.6		11.5		9.3		7.4

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		13.6		8		11.7		14.3		17.2		18.5		18.1		19		17.8		13.2		10.7		8		6.6

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		12.7		5		8.5		12.6		16.9		19.9		20.5		20.6		18.1		12.7		8.5		5.4		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		6.3		3.2		4.8		6.5		7.7		9.1		9.7		9.3		8.2		6.7		4.7		3.4		2.6

Maximum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		16.4		10		15.4		18.5		21.3		20.1		20.9		20.7		20.7		18.3		13		10.4		8.3

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		16.7		9.2		14		16.3		22.6		21.9		24.3		23.5		22.2		18		12.3		9.1		7.6

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		10.8		4.3		7.4		11		13.9		17.4		17.8		16.9		14.8		10.8		7.4		5		3.5

Minimum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		5.9		2.6		4		5.8		7.5		8.8		9.4		9.1		8		5.9		4		3		2.2

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		7.2		11.4		14.2		14.2		15.9		15.4		14.9		14.4		12.1		9.9		8.4		6.3

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		10.2		6.3		9.8		11.4		11.4		14		13.3		12.5		11.7		10		8.9		7.1		5.5