UNIONVILLE, MONTANA

Average Temperature

Years on Record: 10

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		5.1		-5.9		-3.3		-2.7		4		8.9		12.3		16.9		16.5		11.5		6.3		-0.6		-3.3

Average High Temperature

Years on Record: 10

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		12.2		---		3		3.7		11.2		16.4		19.9		25.9		25.6		19.8		13.6		5.4		2.1

Average Low Temperature

Years on Record: 10

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		-2.1		-11.8		-9.7		-9.2		-3.1		1.5		4.7		7.9		7.4		3.2		-1.2		-6.6		-8.7

Highest Recorded Temperature

Years on Record: 10

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		35		13.9		17.2		16.7		26.7		29.4		32.2		35		35		32.2		27.2		19.4		16.1

Lowest Recorded Temperature

Years on Record: 10

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		-37.2		-37.2		-37.2		-36.7		-17.8		-14.4		-5		-2.8		---		-6.7		-16.7		-36.7		-32.2

Average Number of Days Above 90F/32C

Years on Record: 10

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		4.5		---		---		---		---		---		0.1		2.5		1.8		0.1		---		---		---

Average Number of Days Below 32F/0C

Years on Record: 10

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		202.9		29.1		26.6		29.3		23.9		10.5		3.3		0.2		0.1		6.5		18.3		25.9		29.1

Average Number of Days Below 0F/-17C

Years on Record: 10

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		22.8		7.2		4.8		3.8		0.1		---		---		---		---		---		---		2.8		4.1

Average Precipitation

Years on Record: 10

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		435		21		24		29		42		65		70		36		24		37		23		36		28

Average Number of Days With Precipitation

Years on Record: 10

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		85		6		7		7		7		8		11		7		8		7		5		6		6

Most Reported Precipitation in a Month

Years on Record: 10

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		124		41		65		60		81		104		124		95		55		83		53		87		62

Least Reported Precipitation in a Month

Years on Record: 10

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		---		3		7		---		8		24		31		2		1		7		2		2		9

Most Precipitation Reported in a Day

Years on Record: 10

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		63.5		15.2		21.6		23.6		30.7		63.5		47.2		31		14		54.4		20.6		24.1		19.3

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

Years on Record: 10

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		46		3		3		4		4		5		7		4		3		3		2		4		4

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

Years on Record: 10

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		9		---		1		---		1		2		1		1		---		1		1		1		---

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

Years on Record: 10

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

Average Snowfall

Years on Record: 10

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		247.9		27.4		26.2		41.1		39.4		18.3		2.3		---		---		6.1		15.5		34.8		36.8

Most Snow Reported in a Month

Years on Record: 10

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		109.2		54.6		47		109.2		71.1		76.2		19.1		0.8		---		27.9		50.8		74.9		91.4

Heating Degree Days

Years on Record: 10

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		3163.9		578.3		452.8		481.1		264.4		133.3		52.8		10		6.7		77.8		205		402.8		498.9

Cooling Degree Days

Years on Record: 10

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		45.6		---		---		---		---		---		1.1		25.6		17.2		1.7		---		---		---

Growing Degree Days

Years on Record: 10

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		531.8		---		---		---		---		---		70		215.3		201.5		45		---		---		---

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		14.2		15.7		16.4		16		14.6		13		11.4		9.9		9.2

Average Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		13.6		5		8.3		12.4		16.7		20.1		22.2		23.7		20.1		15		9.7		5.7		4.3

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		3		4.3		6.2		7.6		8.9		9.4		9.2		8		6.7		4.8		3.2		2.6

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		15.1		8.7		12.6		15.3		17.4		18.4		19.3		21.1		20		17.4		13.2		9.4		7.6

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		14.8		7.6		11.2		13.4		16.5		18.6		20.9		23.8		21		16.7		12.5		8.2		6.8

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		13.6		5		8.3		12.4		16.7		20.1		22.2		23.7		20.1		15		9.7		5.7		4.3

Maximum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		6.5		3.2		4.6		6.7		7.7		9.1		9.6		10.2		8.5		7.5		5.1		3.5		2.8

Maximum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		17.3		10		14.1		18.4		19.9		21.1		21.8		24.1		22.5		21.5		14.9		10.6		8.7

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		17.9		8.9		13		17.4		20.6		23.4		25.7		27.8		24.4		21.6		14.4		9.5		8.1

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		11.5		4.3		7.2		10.2		14.8		17.2		18.8		18.2		18.1		12.1		8.6		4.9		3.6

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		2.6		3.9		5.7		7.5		8.8		9.3		9		7.9		6.2		4.4		2.9		2.3

Minimum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		12.5		7.2		10.8		12.2		15.1		15.7		16.3		16.2		17.9		13.5		11.6		7.7		6.2

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		11.1		6.1		9.2		9.7		12.8		13.5		15		14.7		17.6		11.8		10.7		6.6		5.3