GRANGEVILLE - NEZPERCE NATIONAL FOREST, IDAHO

Average Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		8.9		-0.4		1.8		4.6		7.9		11.8		15.6		19.4		19.6		14.6		8.9		3.2		-0.5

Average High Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		15		3.4		6.7		10.2		14.3		18.3		22.4		27.6		28.3		22.7		15.5		7.3		3.3

Average Low Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		2.8		-4.3		-3		-1		1.6		5.3		8.8		11.2		10.9		6.5		2.3		-1.1		-4.3

Highest Recorded Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		32		6.6		11.3		15.4		18.8		22.7		26.4		32		31.9		28.3		20.7		13.6		7.2

Lowest Recorded Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		-11.7		-11.7		-8.9		-3.8		-0.7		3.4		7.1		8.7		7.9		3.7		-0.2		-6.6		-9.8

Average Number of Days Above 90F/32C

Years on Record: 26

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		28.5		---		---		---		0.1		0.6		2.5		11		11.6		2.7		---		---		---

Average Number of Days Below 32F/0C

Years on Record: 26

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		143.9		27.5		23.1		20.6		11.7		2.2		---		---		---		1.8		10		20		27.1

Average Number of Days Below 0F/-17C

Years on Record: 26

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		2.3		1.2		0.3		---		---		---		---		---		---		---		---		0.1		0.6

Average Precipitation

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		608		37		33		60		72		92		72		42		30		41		45		46		38

Average Number of Days With Precipitation

Years on Record: 26

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		138		13		12		15		14		14		11		7		6		8		9		14		15

Most Reported Precipitation in a Month

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		160		79		84		110		142		160		146		130		99		133		122		99		113

Least Reported Precipitation in a Month

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		---		10		6		21		11		45		16		2		---		3		---		14		7

Most Precipitation Reported in a Day

Years on Record: 26

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		64.8		31		17		33.5		45.7		64.8		47		63.5		29.7		36.1		48		28.7		24.9

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

Years on Record: 26

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		76		6		6		8		8		9		7		4		3		5		5		7		8

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

Years on Record: 26

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

Average Snowfall

Years on Record: 26

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		94.7		29.5		13.7		10.9		2.3		0.2		---		---		---		---		1.5		9.9		26.7

Most Snow Reported in a Month

Years on Record: 26

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		115.1		115.1		40.6		53.3		17.8		4.6		---		---		---		---		20.3		30.5		68.6

Heating Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		3615.6		582.8		462.2		425.6		312.2		203.3		97.8		36.1		33.9		129.4		291.7		456.1		584.4

Cooling Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		176.7		---		---		---		---		1.1		16.1		68.9		73.3		17.2		---		---		---

Growing Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		952.4		---		---		---		---		56.8		168.3		291.1		297.9		138.3		---		---		---

Average Length of Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		12.8		9.7		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		5.4		8.7		13		17		19.6		22.4		25.2		21.8		15.9		9.9		5.7		4.7

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		3.1		4.4		6.3		6.9		8.9		9.4		9.7		8.3		6.8		4.8		3.2		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		9.4		12.9		15.9		17.8		18		19.5		22.4		21.7		18.4		13.4		9		8.1

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		15.4		8.1		11.6		14.2		18.1		17.8		21.1		25.2		23.1		17.9		12.6		7.8		7.3

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		14.1		5.4		8.7		13		17		19.6		22.4		25.2		21.8		15.9		9.9		5.7		4.7

Maximum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		6.8		3.4		4.7		6.9		7.1		9		9.8		11.4		9.5		7.7		5.5		3.6		2.9

Maximum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		18.2		10.8		14.2		19.2		19.8		21.8		23.3		25.6		24.2		22.6		18		10.8		8.9

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		18.8		9.4		13		18.2		20.9		24.5		27.6		28.1		25.5		22.7		17.7		9.8		8.1

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		11.8		4.9		7.2		11.3		15.5		17.1		18.6		18.5		19.3		12.2		8		4.6		4.1

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		3.9		6		6.7		8.7		9.2		8.9		7.9		6.2		4.1		2.8		2.5

Minimum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		12.8		8.3		10.3		13.5		16.1		15.6		16.2		16.4		19.1		13.7		10.6		6.8		7

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		11.6		7.1		9		11.3		15.7		13.4		14.7		15.2		19.6		11.9		9.6		5.7		6.2