NATRONA, WYOMING

Average Temperature

Years on Record: 63

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		7.5		-4.8		-2.7		0.9		5.9		11.4		17.1		21.6		20.7		14.7		8.1		0.8		-3.9

Average High Temperature

Years on Record: 63

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		14.9		0.9		3.2		7.7		13.4		19.3		25.9		30.9		29.9		23.6		15.8		7		1.8

Average Low Temperature

Years on Record: 63

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		---		-10.6		-8.7		-5.8		-1.5		3.5		8.3		12.3		11.4		5.8		0.3		-5.4		-9.5

Highest Recorded Temperature

Years on Record: 63

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		40		15.6		20		23.9		28.9		35		38.9		40		38.9		36.1		30.6		22.2		17.2

Lowest Recorded Temperature

Years on Record: 63

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		-40.6		-40		-35.6		-29.4		-21.1		-8.9		-2.2		-1.1		0.6		-8.9		-19.4		-29.4		-40.6

Average Number of Days Above 90F/32C

Years on Record: 63

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		30.4		---		---		---		---		0.1		4.4		13.8		10.6		1.7		---		---		---

Average Number of Days Below 32F/0C

Years on Record: 63

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		180.8		29.3		26.3		27.1		19.8		6.4		0.2		---		---		3.2		15.3		24.5		28.8

Average Number of Days Below 0F/-17C

Years on Record: 63

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		17.2		6.1		3.2		1.6		0.1		---		---		---		---		---		---		1.7		4.4

Average Precipitation

Years on Record: 63

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		304		13		14		23		36		53		36		31		18		24		26		18		14

Average Number of Days With Precipitation

Years on Record: 63

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		95		7		7		9		10		11		9		8		6		7		7		7		7

Most Reported Precipitation in a Month

Years on Record: 63

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		164		36		36		62		100		164		119		90		68		86		117		69		94

Least Reported Precipitation in a Month

Years on Record: 63

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

Most Precipitation Reported in a Day

Years on Record: 63

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		56.4		13.5		15		24.9		46.2		56.4		54.6		45.2		56.1		51		52.3		25.1		32

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

Years on Record: 63

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		35		2		2		3		4		5		4		3		2		3		3		2		2

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

Years on Record: 63

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		4		---		---		---		1		1		1		1		---		---		---		---		---

Average Snowfall

Years on Record: 63

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		195.3		25.4		25.4		32.8		30.7		9.9		0.5		---		---		3.3		16		24.9		26.4

Average Snow Cover

Years on Record: 51

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

Most Snow Reported in a Month

Years on Record: 63

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		159.5		99.6		60.5		92		143		62.5		7.6		---		---		29.2		56.9		94.2		159.5

Heating Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		5066.7		739.4		626.7		610		470.6		325.6		168.3		80		100.6		223.9		400.6		599.4		721.7

Cooling Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		15.6		---		---		---		---		---		3.3		7.8		3.9		0.6		---		---		---

Growing Degree Days

Years on Record: 63

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		1085.4		---		---		---		---		43.1		211.7		359.9		330.7		140		---		---		---

Average Length of Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		12.7		10		11.1		12.5		14		15.2		15.9		15.5		14.4		12.9		11.5		10.2		9.6

Average Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		15.3		6.8		10		14		17.9		22.1		24.6		24.4		21.7		17.1		11.8		7.5		5.9

Average Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		4.9		2.3		3.3		4.9		6.5		7.6		7.9		7.4		6.3		4.9		3.6		2.6		2

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		17.9		13.4		15.6		17.7		18.6		20.3		21.3		21.7		21.6		20.3		17.6		13.5		12.6

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		20		14.2		16.7		18.4		19.6		23.3		26.3		26.9		25.6		22.8		19		14.4		13.4

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		15.3		6.8		10		14		17.9		22.1		24.6		24.4		21.7		17.1		11.8		7.5		5.9

Maximum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		5.4		2.5		3.6		5.2		7.1		8.4		8.7		7.9		6.7		5.6		3.9		2.8		2.2

Maximum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		20.7		16.4		19.3		20.8		23.5		22.9		23.9		23.3		22.5		22.5		19.8		17		16.1

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		25		18.4		22.8		23.5		28.8		29		33		30.9		27.5		26.8		22.2		19.4		18

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		13.4		5.9		8.5		12.5		14.4		17.9		21.6		22.8		20.5		14.9		10.7		6.3		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		4.3		2		2.7		4.2		5.3		6.8		6.7		6.7		6		4.3		3.3		2.2		1.7

Minimum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		15.1		10.9		12.6		15.4		14.7		16.4		18.8		20.3		20.3		17.1		15.4		10.7		8.3

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		15.3		10.7		12.3		14.8		12.7		15.2		20.2		23.5		22.9		17.5		15.7		10.2		7.8