TRINITY NATIONAL FOREST, CALIFORNIA

Average Temperature

Years on Record: 50

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		11.3		3.2		5.2		6.9		9.4		13.5		17.7		21.1		20.7		17.4		12.2		6.2		2.8

Average High Temperature

Years on Record: 50

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		19.8		8.4		11.4		14.1		17.8		22.8		28		32.6		32.3		28.5		21.7		12.6		7.8

Average Low Temperature

Years on Record: 50

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		2.9		-2.2		-1.1		-0.3		1		4.1		7.4		9.7		9.1		6.4		2.8		-0.1		-2.2

Highest Recorded Temperature

Years on Record: 50

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		43.9		19.4		25		28.3		33.3		37.2		41.1		43.9		43.3		41.1		36.7		26.7		22.2

Lowest Recorded Temperature

Years on Record: 50

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		-20		-17.8		-14.4		-9.4		-8.3		-5		-2.2		-1.1		1.1		-2.8		-9.4		-11.1		-20

Average Number of Days Above 90F/32C

Years on Record: 50

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		56.3		---		---		---		0.1		1.5		7.4		18.6		18.6		8.7		1.3		---		---

Average Number of Days Below 32F/0C

Years on Record: 50

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		126.1		23.4		18.9		18.2		13		3.8		0.5		---		---		0.6		6.8		16.9		23.8

Average Number of Days Below 0F/-17C

Years on Record: 50

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

Average Precipitation

Years on Record: 50

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		933		169		134		112		56		42		22		10		15		20		62		128		166

Average Number of Days With Precipitation

Years on Record: 50

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		95		13		12		13		10		7		4		2		2		3		6		11		12

Most Reported Precipitation in a Month

Years on Record: 50

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		528		451		402		323		259		145		102		56		86		97		361		384		528

Least Reported Precipitation in a Month

Years on Record: 50

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		---		8		2		13		5		---		---		---		---		---		---		2		6

Most Precipitation Reported in a Day

Years on Record: 50

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		160		106.9		160		78.7		54.4		43.9		58.4		49.5		46		38.4		99.8		88.9		110.5

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

Years on Record: 50

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		66		10		9		9		5		5		2		1		2		2		4		8		9

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

Years on Record: 50

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		26		4		4		3		1		1		1		---		---		1		2		4		5

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

Years on Record: 50

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		9		2		2		1		---		---		---		---		---		---		1		1		2

Average Snowfall

Years on Record: 50

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		59.4		16		11.7		7.6		4.1		---		---		---		---		---		0.2		5.1		14.7

Average Snow Cover

Years on Record: 45

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

Most Snow Reported in a Month

Years on Record: 50

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		85.1		81.3		85.1		68.6		54.6		0.5		---		---		---		---		7.6		50.8		75.2

Heating Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		2842.2		468.3		370.6		351.7		261.7		152.8		66.1		25.6		18.3		69.4		197.2		371.7		488.9

Cooling Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		341.7		---		---		---		6.1		10.6		45.6		115		102.8		50.6		11.1		---		---

Growing Degree Days

Years on Record: 50

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		1307.5		---		---		---		---		108.5		230		344.4		332.4		223.3		68.9		---		---

Average Length of Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		12.7		10.1		11.2		12.5		13.9		15		15.6		15.3		14.2		12.9		11.5		10.4		9.8

Average Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		17		7.1		10.2		14.4		18.8		23.5		27.7		29		25.4		19.9		13.6		7.8		6.2

Average Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		4.6		2.6		3.5		5		6.5		7.2		6.8		5.5		4.9		4.1		3.4		2.8		2.3

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		19		12.3		14.8		17.7		19.4		21.6		23.9		25.6		25.3		23.6		20		13		11.6

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		22.7		13		15.8		18.2		20.5		25.7		32.4		36.5		33.4		28.6		22.4		13.8		12.4

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		17		7.1		10.2		14.4		18.8		23.5		27.7		29		25.4		19.9		13.6		7.8		6.2

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		2.8		3.9		5.5		7.2		8.5		8		7		6		5.5		4.2		3.1		2.5

Maximum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		23		16.4		20.6		22		23.9		25.9		27.1		27.6		27.8		26.5		24.6		17.8		16.1

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		30		18.7		24.8		25.2		29.2		36		41.6		42		39.3		33.9		29.7		20.7		18.5

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		13.9		5.5		7.7		12.3		13		17.1		24.5		26		23.1		16.4		10.9		6.2		4.4

Minimum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		3.5		2.2		2.6		4.2		5.3		5.4		4.8		4.3		3.6		3.2		2.3		2.3		1.9

Minimum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		14.9		8.5		10		14.4		13		15.6		21.2		23		22.9		18.8		14.9		9.2		6.9

Minimum 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		7.9		8.9		13.2		9.9		13.5		25.5		29.6		27.8		19.9		14.8		8.6		6.3