WHITLASH, MONTANA

Average Temperature

Years on Record: 16

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		6.3		-5		-4		-0.2		5.7		11.2		15.9		18.9		17.2		12.4		7.9		-0.6		-3.6

Average High Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		12.8		1		2.1		6.1		12.4		18.2		22.8		26.3		24.6		19.1		14.3		4.1		1.8

Average Low Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		-0.6		-10.9		-10		-6.1		-0.7		4.4		8.6		10.9		9.4		5.2		0.2		-7.9		-10.3

Highest Recorded Temperature

Years on Record: 16

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		36.7		16.7		19.4		21.1		29.4		32.2		33.9		36.7		34.4		32.8		26.1		26.1		15.6

Lowest Recorded Temperature

Years on Record: 16

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		-36.1		-32.8		-31.7		-27.8		-22.2		-6.1		---		1.7		-1.1		-11.1		-17.8		-32.8		-36.1

Average Number of Days Above 90F/32C

Years on Record: 16

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		5.4		---		---		---		---		0.2		0.5		3.1		1.4		0.2		---		---		---

Average Number of Days Below 32F/0C

Years on Record: 16

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		171.8		27.2		25.1		26.8		16.6		4.5		---		---		0.2		3.9		14.5		25		28

Average Number of Days Below 0F/-17C

Years on Record: 16

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		27		8.2		6.4		2		0.4		---		---		---		---		---		0.1		4.7		5.2

Average Precipitation

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		291		8		8		14		25		48		45		32		39		44		16		6		5

Average Number of Days With Precipitation

Years on Record: 16

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		54		3		2		4		5		8		7		5		6		5		3		3		3

Most Reported Precipitation in a Month

Years on Record: 16

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		154		27		34		25		75		93		92		72		68		154		26		14		14

Least Reported Precipitation in a Month

Years on Record: 16

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		---		---		---		---		---		15		3		3		8		---		---		2		---

Most Precipitation Reported in a Day

Years on Record: 16

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		49.5		6.6		18.5		13.5		15.8		42.2		41.4		27.2		30.5		49.5		19.1		6.1		6.3

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

Years on Record: 16

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

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

Years on Record: 16

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		5		---		---		---		---		1		1		1		1		1		---		---		---

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

Years on Record: 16

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

Average Snowfall

Years on Record: 16

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		44.7		7.1		3.8		9.7		7.9		0.2		---		---		---		---		0.8		6.6		8.6

Most Snow Reported in a Month

Years on Record: 16

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		39.9		26.7		10.7		23.4		39.9		2		---		---		---		0.2		2.8		16.3		30

Heating Degree Days

Years on Record: 16

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		2874.4		551.1		471.1		402.2		220.6		80		9.4		1.7		3.9		64.4		160		401.7		508.3

Cooling Degree Days

Years on Record: 16

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		100.6		---		---		---		---		1.1		15		50.6		27.8		6.1		---		---		---

Growing Degree Days

Years on Record: 16

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		787.5		---		---		---		---		37.9		176.7		277.3		223.9		71.7		---		---		---

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		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		13.2		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		8.9		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		14.3		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		12.3		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