LOTHAIR, MONTANA

Average Temperature

Years on Record: 108

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		5.1		-7.9		-5.8		-1.6		4.7		9.9		14.3		18.3		17.2		11.8		6.3		-0.9		-5.7

Average High Temperature

Years on Record: 108

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		11.8		-2.1		0.3		4.6		11.4		16.9		21.2		26.6		25.6		19.4		13.3		4.9		-0.2

Average Low Temperature

Years on Record: 108

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		-1.7		-13.6		-11.8		-7.7		-2.1		2.9		7.3		10		8.9		4.1		-0.7		-6.8		-11.3

Highest Recorded Temperature

Years on Record: 108

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		41.7		19.4		21.7		25		31.7		32.8		38.3		41.1		41.7		36.1		31.1		26.1		19.4

Lowest Recorded Temperature

Years on Record: 108

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		-43.9		-43.3		-43.9		-36.7		-31.7		-12.8		-2.8		---		-3.9		-20		-25.6		-36.1		-43.3

Average Number of Days Above 90F/32C

Years on Record: 108

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		7.8		---		---		---		---		0.1		0.7		3.8		2.9		0.4		---		---		---

Average Number of Days Below 32F/0C

Years on Record: 108

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		188.8		29		26.2		27.9		20.5		7.8		0.5		---		0.2		5.6		17.5		25.3		28.3

Average Number of Days Below 0F/-17C

Years on Record: 108

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		34		10.9		7.6		3.7		0.3		---		---		---		---		---		0.3		3.2		7.9

Average Precipitation

Years on Record: 108

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		289		8		7		11		20		47		69		37		33		28		12		8		8

Average Number of Days With Precipitation

Years on Record: 108

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		72		5		4		6		6		9		10		7		6		6		4		4		5

Most Reported Precipitation in a Month

Years on Record: 108

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		228		58		28		45		59		178		202		228		126		105		56		35		37

Least Reported Precipitation in a Month

Years on Record: 108

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

Most Precipitation Reported in a Day

Years on Record: 108

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		71.1		43.7		11.9		20.6		28.4		51.8		71.1		59.2		59.7		48.8		35.6		30.5		22.9

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

Years on Record: 108

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		31		1		1		1		3		5		6		4		3		3		2		1		1

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

Years on Record: 108

		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: 108

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

Average Precipitable Water

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm.		1		0.6		0.6		0.7		0.8		1.2		1.5		1.7		1.7		1.4		1		0.7		0.6

Average Snowfall

Years on Record: 108

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		81.8		14		11.4		12.4		10.4		3.3		0.2		---		---		1.8		6.1		11.2		10.9

Average Snow Cover

Years on Record: 96

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

Most Snow Reported in a Month

Years on Record: 108

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		50		50		39.6		44.5		43.4		27.9		10.4		---		---		17.8		28.2		41.1		45.2

Average Relative Humidity

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		58.1		65		64		60.4		57.3		55.2		58		51.1		50.2		54.2		58.8		60.5		63.6

Heating Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		4933.3		793.3		642.8		588.3		401.7		263.9		138.3		71.7		95.6		210.6		381.7		592.2		753.3

Cooling Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		108.3		---		---		---		---		---		8.3		38.9		52.2		8.9		---		---		---

Growing Degree Days

Years on Record: 108

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		662.1		---		---		---		---		---		128.3		256.6		223.9		53.3		---		---		---

Average Length of Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		12.8		9.4		10.8		12.5		14.3		15.9		16.8		16.3		14.8		13.1		11.3		9.8		9

Average Total Sky Cover

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		46.1		52		50.2		49.4		51.6		51.5		49.9		34		33.9		38.4		44.3		49.8		48.1

Average Opaque Sky Cover

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		39.6		43.8		43.3		42.9		46.2		45.5		44.4		29		29.5		33.6		38.3		38.6		39.6

Average Wind Speed

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
km/h		20.2		22.8		19.9		21.2		21		20.4		19.3		16.7		16.4		17.7		21.1		23.2		22.8

Average Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		13.2		4.2		7.6		11.8		17.4		20.5		22.2		23.7		19.4		14.2		9.1		5.1		3.6

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		2.6		4		6		7.6		9		9.6		9.4		8		6.5		4.6		3		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		14.7		7.4		11.9		15		18.4		18.9		19.2		21.1		19.5		16.7		12.8		8.8		6.9

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		14.6		6.6		10.4		13		18.4		19.7		20.9		24.1		20.4		16		12.1		7.6		6.1

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		13.2		4.2		7.6		11.8		17.4		20.5		22.2		23.7		19.4		14.2		9.1		5.1		3.6

Maximum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		6.4		2.8		4.5		6.6		7.9		9.1		9.8		9.9		8.1		7.3		4.9		3.3		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		17.1		8.3		14.4		18.3		22		21.6		22.5		23.2		20.8		20.9		14.2		10.4		8

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		17.8		7.5		12.8		17.4		23.4		24.6		26.9		27.2		22.6		21.2		13.6		9		7.2

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		11.2		3.7		6.2		9.9		15.2		17.6		18.9		18.8		17.5		11.1		8		4.5		3.2

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		2.4		3.5		5.6		7.5		8.9		9.5		9.2		8		5.9		4.2		2.7		2

Minimum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		12.3		6.4		9.6		12.2		15.7		16.1		16.4		16.6		17.4		12.6		11.1		7.5		5.8

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		5.5		8		9.7		14.1		14.5		15.3		15.8		16.9		10.8		10.2		6.4		5