BELLTOWER, MONTANA

Average Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		42.1		18.6		24.8		32.8		42.1		50.8		59		66.2		65.3		54.6		43.3		28.7		19.3

Average High Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		8		36.1		44.6		55.1		64.4		74.2		83.6		82.9		70.7		57.8		40.3		30.6		55

Highest Recorded Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		90.2		40.7		47.8		55.8		66.5		72.1		84.9		89.6		90.2		80		65.5		54.4		41.6

Average Precipitation

Years on Record: 62

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		13.7		0.5		0.5		0.7		1.2		2.4		2.6		1.7		1.2		1.1		0.9		0.5		0.5

Average Number of Days With Precipitation

Years on Record: 62

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		52		3		3		4		5		7		7		6		4		4		3		3		3

Most Reported Precipitation in a Month

Years on Record: 62

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		8.3		1.8		2		2.1		4.6		8.3		6		5.1		4		5.8		3.9		2.6		2.3

Least Reported Precipitation in a Month

Years on Record: 62

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		---		---		---		---		---		0.4		---		---		---		---		---		---		---

Most Precipitation Reported in a Day

Years on Record: 62

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		4		0.8		0.7		1.2		2.1		4		3		1.8		2		2.5		2.1		2.2		0.7

Avg. No. of Days w/Precip. Above 0.1in/2.5mm

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		35		1.6		1.4		2.1		3.3		5.4		5.4		4.6		2.6		3.1		2.3		1.6		1.6

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

Years on Record: 62

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		36		2		2		2		3		6		5		4		3		3		2		2		2

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

Years on Record: 62

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		8		---		---		---		1		1		2		1		1		1		1		---		---

Avg. No. of Days w/Precip. Above 0.5in/13mm

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		8		0.2		---		0.3		0.8		1.5		1.8		1.2		0.6		0.8		0.6		0.1		0.1

Average Snowfall

Years on Record: 62

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		29.7		5.2		5.1		5.9		3.4		0.5		---		---		---		---		1		3.5		5.1

Average Number of Days With Snow

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		9.7		2.1		1.3		2.3		0.7		0.1		---		---		---		---		0.4		1		1.8

Most Snow Reported in a Month

Years on Record: 62

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		40		26		21		25		40		11		---		---		---		2		12		28		27.2

Avg. No. of Days w/Snow Above 1in/2.5cm

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		9.2		2		1.3		2.2		0.7		0.1		---		---		---		---		0.4		0.9		1.6

Avg. No. of Days w/Snow Above 3in/7.5cm

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		3.3		0.7		0.4		0.8		0.3		0.1		---		---		---		---		0.1		0.5		0.4

Avg. No. of Days w/Snow Above 5in/12.7cm

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		1.2		0.2		0.1		0.3		0.3		0.1		---		---		---		---		0.1		---		0.1

Avg. No. of Days w/Snowfall Above 10in/25cm

Years on Record: 30

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

Heating Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		8578		1439		1125		997		687		443		207		80		95		326		674		1089		1416

Cooling Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		259		---		---		---		---		1		25		116		103		14		---		---		---

Growing Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		1409.3		---		---		---		---		24.8		270		502.2		474.3		138		---		---		---

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		11		12.5		14.1		15.5		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
kWh/m2		3.9		1.5		2.5		3.5		4.8		5.8		6.4		6.6		5.6		4.2		2.8		1.7		1.3

Average Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.7		0.9		1.2		1.7		1.9		2.4		2.6		2.5		2.2		1.9		1.4		1		0.8

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		4.3		2.7		3.7		4.4		5.1		5.3		5.6		5.9		5.6		4.9		3.9		2.8		2.3

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		4.3		2.3		3.3		3.8		5.2		5.5		6.1		6.6		5.9		4.7		3.7		2.5		2.1

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		3.9		1.5		2.5		3.5		4.8		5.8		6.4		6.6		5.6		4.2		2.8		1.7		1.3

Maximum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.8		0.9		1.3		1.8		2.1		2.5		2.7		2.6		2.3		2		1.5		1.1		0.9

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		2.9		4.2		4.8		6.2		5.9		6.5		6.4		6.2		5.6		4.4		3.4		2.8

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		5.1		2.6		3.9		4.4		6.7		6.6		7.7		7.4		6.7		5.6		4.2		3.2		2.6

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		3.1		1.4		2		2.7		4.1		4.2		5.4		4.9		4.7		3.1		2.3		1.4		1.1

Minimum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.6		0.8		1.1		1.6		1.8		2.4		2.6		2.5		2.2		1.7		1.2		0.8		0.7

Minimum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		3.4		2.3		2.9		3.3		4.3		3.8		4.7		4.4		4.6		3.5		3.1		2.1		1.8

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		2.9		1.9		2.4		2.4		4		2.9		4.5		3.9		4.3		2.9		2.8		1.8		1.5