IADHO, IDAHO

Average Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		7.3		-6.1		-2.9		2.3		7.2		11.8		16.6		20.4		19.9		14.6		8.2		0.6		-5.3

Average High Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		14.7		-1.3		2.6		8.7		14.8		19.9		25.4		30		29.9		23.9		16.3		6.1		-0.4

Average Low Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		-0.1		-10.8		-8.4		-4		-0.4		3.7		7.8		10.8		9.9		5.2		0.1		-4.9		-10.3

Highest Recorded Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		32.5		2.8		8.1		13.8		19.9		24.9		29.8		32.5		32.3		28.6		22.3		12.2		3.2

Lowest Recorded Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		-17.7		-17.7		-15.9		-10.7		-3.7		1.4		5.9		8		7.6		1.7		-1.8		-9.1		-16.5

Average Number of Days Above 90F/32C

Years on Record: 16

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		31.7		---		---		---		---		0.3		3.6		16		10.6		1.3		---		---		---

Average Number of Days Below 32F/0C

Years on Record: 16

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		216.1		30.9		27.8		30.5		23.6		8.9		1.3		0.1		0.7		7.7		25.4		28.6		30.7

Average Number of Days Below 0F/-17C

Years on Record: 16

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		43.3		16.9		10		3.3		---		---		---		---		---		---		0.1		2		11.1

Average Precipitation

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		361		32		26		34		32		51		30		19		24		24		28		30		32

Average Number of Days With Precipitation

Years on Record: 16

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		70		8		6		5		6		8		7		4		5		4		3		6		8

Most Reported Precipitation in a Month

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		116		60		80		109		72		116		80		54		68		71		63		81		81

Least Reported Precipitation in a Month

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		---		6		---		1		5		8		4		---		2		---		---		---		---

Most Precipitation Reported in a Day

Years on Record: 16

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		45.2		21.6		21.1		12.2		14.7		45.2		30.5		19.1		19.3		25.4		23.6		21.1		17

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

Years on Record: 16

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		25		2		2		1		2		4		4		1		2		2		1		2		2

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

Years on Record: 16

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

Average Snowfall

Years on Record: 16

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		7.6		---		---		1.3		---		---		---		---		---		---		---		---		6.3

Most Snow Reported in a Month

Years on Record: 16

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		6.3		---		---		3.8		---		---		---		---		---		---		---		---		6.3

Heating Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		4224.4		756.7		595.6		496.7		333.3		203.3		81.1		18.9		28.3		130.6		313.3		531.7		735

Cooling Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		207.2		---		---		---		---		2.2		29.4		82.2		76.7		16.7		---		---		---

Growing Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		1022.2		---		---		---		---		56.8		198.3		322.1		308.3		136.7		---		---		---

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		15.5		6.9		10.2		14.5		18.6		21.7		24.3		24.9		22		17.5		11.9		7.3		6

Average Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		4.8		2.1		3		4.5		6.3		7.7		7.9		7.2		6		4.6		3.4		2.4		1.8

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		18.5		14.5		16.9		19.3		19.7		20		21.1		22.1		22.1		21.2		18.3		13.9		12.6

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		21.2		15.4		18.2		20.4		21.6		22.8		26.1		28.4		26.9		24.6		20.1		14.8		14.8

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		15.5		6.9		10.2		14.5		18.6		21.7		24.3		24.9		22		17.5		11.9		7.3		6

Maximum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		5.3		2.3		3.5		5		6.8		8.3		8.8		7.8		6.7		5.5		3.8		2.7		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		21.7		17.8		20.5		22.6		22.9		24.1		24.5		24.8		24.1		23.6		23.1		18.1		14.4

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		27		19.8		23.5		25.9		27.8		32.3		34.9		35.2		31.2		28.9		27.3		20.2		17.5

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		13.5		6.3		8.3		12.6		16.2		18.4		20.9		23.1		20.2		14.7		10.3		6		5.5

Minimum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		3.9		1.8		2.5		3.8		5.4		6.2		6.4		5.9		5.3		3.9		2.5		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		15.7		12.7		12.9		16.2		16.8		16.9		18.2		20.5		20.1		17		15		10.5		11.1

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		16.3		13.1		12.5		15.5		16.4		16.3		19.2		24.4		22.6		17.4		15.3		10.2		12.5