CLARK FORK - EAST, IDAHO

Average Temperature

Years on Record: 45

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		7.3		-3.4		-1.1		2.4		7.7		11.8		14.4		17.5		17.2		12.9		7.7		2.4		-1.4

Average High Temperature

Years on Record: 45

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		13.9		0.5		3.6		8.1		15.1		20		22.3		27.1		27.1		21.5		14.1		6.4		2

Average Low Temperature

Years on Record: 45

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		0.7		-7.5		-5.7		-3.2		0.3		3.7		6.6		7.9		7.4		4.4		1.3		-1.6		-4.9

Highest Recorded Temperature

Years on Record: 45

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		36.1		13.9		13.9		20		30.6		30.6		33.9		36.1		36.1		35		30		19.4		11.7

Lowest Recorded Temperature

Years on Record: 45

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		-34.4		-34.4		-33.3		-26.7		-7.8		-7.2		-2.2		0.6		-1.7		-5.6		-7.8		-23.3		-24.4

Average Number of Days Above 90F/32C

Years on Record: 45

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		8		---		---		---		---		---		0.4		3.1		3.7		0.7		---		---		---

Average Number of Days Below 32F/0C

Years on Record: 45

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		163.7		28.2		25.4		25.7		15.8		5.2		0.5		---		0.2		3.3		11.9		20		27.6

Average Number of Days Below 0F/-17C

Years on Record: 45

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		6.8		3.9		1.2		0.5		---		---		---		---		---		---		---		0.3		0.9

Average Precipitation

Years on Record: 45

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		862		105		90		82		49		53		62		26		29		50		99		101		116

Average Number of Days With Precipitation

Years on Record: 45

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		125		15		12		12		9		9		10		5		5		7		11		15		15

Most Reported Precipitation in a Month

Years on Record: 45

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		334		334		266		192		96		148		120		69		101		142		257		155		240

Least Reported Precipitation in a Month

Years on Record: 45

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		---		---		45		29		10		26		---		---		---		13		9		18		21

Most Precipitation Reported in a Day

Years on Record: 45

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		237.5		53.3		237.5		33.3		30		31.2		51.8		22.1		49.5		33.3		47		76.7		39.4

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

Years on Record: 45

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		89		11		9		9		6		6		6		3		3		5		9		11		11

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

Years on Record: 45

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		19		2		2		2		1		1		1		1		1		1		2		2		3

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

Years on Record: 45

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

Average Snowfall

Years on Record: 45

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		175.5		65.8		34.8		21.8		1		---		---		---		---		---		0.5		9.1		42.4

Most Snow Reported in a Month

Years on Record: 45

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		196.8		196.8		113.3		54.6		10.2		---		---		---		---		---		5.1		37.6		126.8

Heating Degree Days

Years on Record: 45

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		2390		502.8		390		319.4		154.4		55.6		15.6		1.7		2.2		37.8		157.8		311.1		441.7

Cooling Degree Days

Years on Record: 45

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		49.4		---		---		---		---		0.6		4.4		23.3		18.3		2.8		---		---		---

Growing Degree Days

Years on Record: 45

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		733.2		---		---		---		---		56.8		131.7		232.5		223.9		88.3		---		---		---

Average Length of Day

Years on Record: 30

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

Average Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		13.4		4.9		8.2		12.7		17		19.6		21.2		23.9		20.7		14.8		9.1		5.2		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		6.2		2.9		4.2		6.2		7.6		9		9.5		9.5		8.2		6.6		4.6		3		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		15		8.4		12.8		16.2		17.8		18		18.3		21.3		20.7		17.4		12.6		8.7		7.5

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		14.7		7.6		11.2		14.3		17.3		17.9		19.1		23.8		22		16.7		11.8		7.4		6.7

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		13.4		4.9		8.2		12.7		17		19.6		21.2		23.9		20.7		14.8		9.1		5.2		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		6.7		3.1		4.4		6.8		7.7		9.1		9.7		11.8		9.1		7.7		5.3		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		17.5		9.3		13.6		19.1		19.6		20.8		21.2		25.6		23.4		22.2		16.3		10.3		8.1

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		17.9		8.5		12.1		18.1		20.1		23.1		24.9		28.1		25.2		22.5		16.1		9.1		7.3

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		4.5		6.9		11.1		15.6		17		18.4		16.2		17.1		10.4		6.7		4.5		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		5.8		2.7		3.8		5.9		7.5		8.8		9.4		9.1		8		5.8		3.7		2.7		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		7.7		10.3		13.7		16.2		15.5		16		14.4		16.8		11.5		8.8		7.1		6

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		10.4		6.8		8.9		11.6		14.7		13.3		14.4		11.6		15.8		9.4		7.6		6		5.2