GLENTANA, MONTANA

Average Temperature

Years on Record: 55

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		3.8		-13		-9.6		-3.5		4.7		10.9		15.8		18.8		18.3		12.1		5.5		-3.5		-10.7

Average High Temperature

Years on Record: 55

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		11.4		-6.9		-3.4		3		12.4		19.2		24		27.8		27.7		21.1		13.3		2.9		-4.4

Average Low Temperature

Years on Record: 55

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		-3.8		-19.2		-15.8		-9.9		-3		2.6		7.6		9.9		8.8		3.2		-2.4		-9.9		-16.9

Highest Recorded Temperature

Years on Record: 55

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		40.6		13.3		17.8		22.8		32.8		36.7		40.6		39.4		40		36.7		31.7		24.4		12.8

Lowest Recorded Temperature

Years on Record: 55

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		-46.1		-45.6		-46.1		-38.3		-27.8		-13.3		-6.7		-1.7		-3.9		-16.7		-28.3		-36.1		-43.9

Average Number of Days Above 90F/32C

Years on Record: 55

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		16		---		---		---		---		0.3		1.8		5.6		7		1.3		---		---		---

Average Number of Days Below 32F/0C

Years on Record: 55

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		210.1		30.5		27.7		29.5		22.5		9.9		1.1		0.1		0.7		8.1		21.3		28.2		30.6

Average Number of Days Below 0F/-17C

Years on Record: 55

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		52.6		16.6		11.9		5.5		0.2		---		---		---		---		---		0.2		4.7		13.6

Average Precipitation

Years on Record: 55

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		304		7		6		8		16		47		73		54		32		32		15		7		6

Average Number of Days With Precipitation

Years on Record: 55

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		60		3		3		3		4		8		10		8		6		5		4		3		3

Most Reported Precipitation in a Month

Years on Record: 55

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		178		34		31		42		66		149		164		178		103		143		65		24		27

Least Reported Precipitation in a Month

Years on Record: 55

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

Most Precipitation Reported in a Day

Years on Record: 55

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		75.2		15.5		12.7		41.7		53.3		62		63.5		75.2		47.8		41.7		22.9		20.3		8.9

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

Years on Record: 55

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		32		1		1		1		2		5		7		5		3		3		2		1		1

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

Years on Record: 55

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		6		---		---		---		---		1		2		1		1		1		---		---		---

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

Years on Record: 55

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

Average Snowfall

Years on Record: 55

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		38.4		6.3		5.3		7.1		2.8		1.8		---		---		---		---		1.3		5.8		7.9

Average Snow Cover

Years on Record: 43

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		2		10		7		2		---		---		---		---		---		---		---		---		5

Most Snow Reported in a Month

Years on Record: 55

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		48.3		22.9		22.9		48.3		27.9		35.6		---		---		---		2.5		11.4		30.5		40.6

Heating Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		5432.2		976.1		766.7		650.6		401.7		227.8		101.7		49.4		70		205		398.9		678.3		906.1

Cooling Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		158.9		---		---		---		---		2.8		26.7		53.3		66.1		10		---		---		---

Growing Degree Days

Years on Record: 55

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		794.6		---		---		---		---		27.6		173.3		273.8		256.6		63.3		---		---		---

Average Length of Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		12.9		9.4		10.8		12.5		14.4		16		16.8		16.4		14.9		13.1		11.3		9.7		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		13.1		4.5		7.8		12.1		17.5		20.5		21.5		22.9		18.9		14		9		5.3		3.8

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		2.7		4.1		6.1		7.6		8.9		9.6		9.2		8		6.4		4.6		3.1		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		14.8		8		12.4		15.8		18.5		18.9		18.6		20.3		18.8		16.4		12.6		9.3		7.2

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		14.5		7.2		10.8		13.6		18.5		19.7		19.8		22.9		19.4		15.6		11.8		8		6.4

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		13.1		4.5		7.8		12.1		17.5		20.5		21.5		22.9		18.9		14		9		5.3		3.8

Maximum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		6.3		3		4.4		6.5		7.7		9.1		9.8		9.8		8.2		6.9		4.8		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		16.8		9.6		13.5		18.3		21		20.9		21.3		23.2		21.4		19.3		13.8		10.7		8.6

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		17.4		8.9		12		16.7		22.3		23.5		25.1		27.2		23.4		19.3		13.1		9.6		7.9

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		3.9		6.6		9.8		14.8		17.6		18.2		18.5		16.4		10.8		8.2		4.6		3

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		2.5		3.7		5.6		7.5		8.9		9.5		9.1		8		5.9		4.3		2.8		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		12.2		6.8		10.2		12.5		15.2		16.1		15.8		16.4		16.2		12.2		11.3		8		5.3

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		10.7		5.9		8.6		9.5		13.2		14.5		14.1		15.3		14.8		10.3		10.4		6.7		4.5