EAST ANACONDA, MONTANA

Average Temperature

Years on Record: 76

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		5.7		-5.6		-3.5		-1		4.3		9.2		13.6		18.7		17.6		12.3		6.7		-0.1		-3.8

Average High Temperature

Years on Record: 76

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		11.2		-1.5		0.9		3.9		9.8		15.2		19.9		26		24.8		18.6		12.1		4.2		0.2

Average Low Temperature

Years on Record: 76

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		0.2		-9.8		-7.9		-5.9		-1.2		3.2		7.3		11.3		10.4		5.9		1.4		-4.3		-7.7

Highest Recorded Temperature

Years on Record: 76

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		37.8		12.2		14.4		19.4		28.9		32.2		35		37.2		37.8		33.3		27.8		21.7		15

Lowest Recorded Temperature

Years on Record: 76

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		-37.2		-35.6		-37.2		-27.8		-22.8		-10		-4.4		---		-2.2		-15		-22.2		-31.7		-35.6

Average Number of Days Above 90F/32C

Years on Record: 76

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		4.3		---		---		---		---		---		0.5		2.3		1.3		0.1		---		---		---

Average Number of Days Below 32F/0C

Years on Record: 76

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		179.4		29.3		26.6		27.4		19.5		7.7		0.8		---		0.1		3.1		12.5		23.9		28.6

Average Number of Days Below 0F/-17C

Years on Record: 76

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		12.7		5.2		2.6		1.4		---		---		---		---		---		---		0.1		0.9		2.4

Average Precipitation

Years on Record: 76

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		340		20		10		20		20		40		50		30		20		30		20		20		20

Average Number of Days With Precipitation

Years on Record: 76

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		97		8		7		8		8		11		12		8		7		7		7		7		7

Most Reported Precipitation in a Month

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		166		27		14		42		72		124		166		145		96		69		60		20		35

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		16		---		---		2		1		---		---

Most Precipitation Reported in a Day

Years on Record: 76

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		63.5		35.6		31.8		21.6		32.8		52.1		63.5		46.7		33.5		40.4		45.7		38.1		31.8

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

Years on Record: 76

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		44		3		2		3		3		5		7		4		4		4		3		3		3

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

Years on Record: 76

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

Average Snowfall

Years on Record: 76

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		151.1		27.9		20.8		24.9		16		7.6		1		---		0.2		3.6		8.6		19.1		21.3

Average Snow Cover

Years on Record: 76

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

Most Snow Reported in a Month

Years on Record: 76

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		106.7		83.8		74.9		80		106.7		53.3		33		---		6.3		25.4		73.7		69.8		86.4

Heating Degree Days

Years on Record: 76

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		3068.3		570		460		426.1		257.8		131.7		45		4.4		8.3		72.2		196.1		384.4		512.2

Cooling Degree Days

Years on Record: 76

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		107.8		---		---		---		---		1.1		11.1		51.7		37.8		6.1		---		---		---

Growing Degree Days

Years on Record: 76

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		679.6		---		---		---		---		---		106.7		268.7		235.9		68.3		---		---		---

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		14.3		5.8		9.2		13.7		17.6		20		22.3		24.6		21.2		16		10.3		6.3		5

Average Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		6.3		3.3		4.6		6.4		7		8.9		9.3		9.4		8.2		6.8		4.9		3.5		2.9

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		16		10.2		13.9		17.1		18.5		18.4		19.4		21.9		21.1		18.5		14		10.4		8.7

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		15.9		8.8		12.5		15.4		19		18.4		20.9		24.7		22.4		18		13.3		9.1		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		14.3		5.8		9.2		13.7		17.6		20		22.3		24.6		21.2		16		10.3		6.3		5

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		4.9		7		7.3		9		9.5		11		9.3		7.7		5.5		3.8		3.1

Maximum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		18.5		11		15		20		21.4		21.5		22.1		25.1		23.9		22.4		17.9		11.9		9.5

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		19		9.6		14.2		18.5		22.9		24		26		28.1		25.4		22.5		17.6		10.4		8.9

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		12.2		5.3		8.3		12.5		15.8		17.9		18.9		18.9		18.8		12.5		8.8		5.1		4.5

Minimum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		5.9		3.1		4.2		6.2		6.8		8.7		9.2		8.9		7.9		6.2		4.4		3		2.7

Minimum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		13.6		9.2		12.3		15.5		16.5		16.3		16.4		16.8		18.5		14		11.7		7.9		7.7

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		12.4		7.9		10.8		13.3		16.2		14.6		15.1		15.8		18.6		12.4		10.8		6.7		7