TWIN MOUNTAIN, NEW HAMPSHIRE

Average Temperature

Years on Record: 44

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		39.9		14.8		15.7		25.2		38.4		50		59.6		63.6		61.3		54.5		44.1		32.6		19.1

Average High Temperature

Years on Record: 44

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		52		26.3		28.2		36.3		50.1		63.9		73.5		76.9		74.5		67.7		56.1		41.8		29.2

Average Low Temperature

Years on Record: 44

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		27.8		3.2		3.3		14		26.6		36		45.7		50.4		47.9		41.3		32.5		23.3		9

Highest Recorded Temperature

Years on Record: 44

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		95		68		61		70		85		92		91		95		92		92		84		70		65

Lowest Recorded Temperature

Years on Record: 44

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		-40		-40		-36		-30		-12		16		25		30		26		16		10		-15		-35

Average Number of Days Above 90F/32C

Years on Record: 44

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		2		---		---		---		---		0.1		0.2		1.1		0.4		0.2		---		---		---

Average Number of Days Below 32F/0C

Years on Record: 44

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		202.8		30		27.9		29.5		22.9		11.8		2.3		0.4		1.5		6.9		15.8		24.5		29.3

Average Number of Days Below 0F/-17C

Years on Record: 44

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		40.8		13.5		12		5.5		0.4		---		---		---		---		---		---		0.4		9

Average Precipitation

Years on Record: 44

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		44.6		2.8		3		3.2		3.5		3.9		4.3		3.9		4.5		3.6		3.5		4.8		3.7

Average Number of Days With Precipitation

Years on Record: 44

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		147		13		12		12		12		13		13		12		13		10		10		13		14

Most Reported Precipitation in a Month

Years on Record: 44

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		9.9		7		6.3		8.1		6		7		8.5		7.4		7.5		8.9		8		9.1		9.9

Least Reported Precipitation in a Month

Years on Record: 44

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		0.6		1		1.4		0.8		1.6		1.5		1.6		1.3		0.6		1.2		1		1.9		0.6

Most Precipitation Reported in a Day

Years on Record: 44

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		4.7		1.6		3.1		3.1		1.9		2.6		2.3		3		4		3.5		3.3		4.2		4.7

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

Years on Record: 44

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		101		8		8		8		9		9		9		8		9		7		7		10		9

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

Years on Record: 44

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		29		2		2		2		2		2		3		3		3		3		2		3		2

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

Years on Record: 44

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		8		---		---		---		---		1		1		1		1		1		1		1		1

Average Snowfall

Years on Record: 44

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		126.1		24.6		28.3		22.8		9.6		0.5		---		---		---		---		1.9		12		26.4

Most Snow Reported in a Month

Years on Record: 44

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		78.2		49.8		78.2		42.5		27.5		3		---		---		---		0.2		8.3		30		56.5

Heating Degree Days

Years on Record: 44

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		6283		1247		1107		925		502		201		32		6		19		109		350		672		1113

Cooling Degree Days

Years on Record: 44

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		138		---		---		---		---		3		25		56		39		15		---		---		---

Growing Degree Days

Years on Record: 44

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		1194.9		---		---		---		---		---		288		421.6		350.3		135		---		---		---

Average Length of Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		12.8		9.9		11		12.5		14		15.4		16.1		15.7		14.5		13		11.4		10.1		9.5

Average Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		3.5		1.7		2.6		3.7		4.5		4.9		5.3		5.3		4.9		3.8		2.6		1.6		1.4

Average Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.5		0.6		0.9		1.4		1.9		2.3		2.5		2.4		2		1.6		1.1		0.7		0.6

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		4.1		3.4		4.3		4.8		4.6		4.5		4.7		4.7		4.8		4.4		3.6		2.7		2.7

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		4.1		3.5		4.4		4.8		4.5		4.2		4.5		4.6		4.8		4.4		3.5		2.6		2.9

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		3.5		1.7		2.6		3.7		4.5		4.9		5.3		5.3		4.9		3.8		2.6		1.6		1.4

Maximum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.5		0.7		1		1.4		1.9		2.3		2.5		2.4		2.1		1.6		1.1		0.8		0.6

Maximum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		4.9		4		5.1		5.6		5.8		5.5		5.3		5.3		5.6		5.1		4.4		3.1		4

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		5.4		4.2		5.7		6		6.5		6.2		5.9		5.8		6.4		5.5		4.6		3.2		4.8

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		2.9		1.5		2.2		3.3		3.7		3.9		4.3		4.5		4.1		3.2		1.9		1.4		1.2

Minimum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.4		0.6		0.8		1.2		1.7		2.2		2.4		2.3		1.9		1.5		1		0.7		0.5

Minimum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		3.3		2.9		3.3		4.1		3.7		3.6		3.8		4.1		3.9		3.5		2.3		2.1		2

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		2.8		2.8		3.1		3.9		3.1		2.6		2.8		3.4		3.3		3		1.9		1.9		2.1