BOULDER, UTAH

Average Temperature

Years on Record: 42

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		56.7		36.2		40.9		47.1		55.5		63		71.5		78.8		76		68.3		57.7		46.4		38.9

Average High Temperature

Years on Record: 42

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		75.5		51.2		56.3		64.5		74.4		82.9		93.1		100.1		96.5		90.3		77.9		64.2		54.2

Average Low Temperature

Years on Record: 42

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		37.9		21.2		25.4		29.6		36.6		42.9		49.8		57.3		55.5		46.3		37.5		28.3		23.7

Highest Recorded Temperature

Years on Record: 42

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		116		81		83		85		95		105		112		114		116		108		100		86		76

Lowest Recorded Temperature

Years on Record: 42

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		-9		-9		-6		11		14		20		25		40		33		24		11		7		---

Average Number of Days Above 90F/32C

Years on Record: 42

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		106.7		---		---		---		0.9		7.7		20.8		29.8		27.3		17.9		2.2		---		---

Average Number of Days Below 32F/0C

Years on Record: 42

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		139		28.2		23.1		20.7		7.6		1.8		0.3		---		---		0.9		7.4		22		27.1

Average Number of Days Below 0F/-17C

Years on Record: 42

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		0.9		0.6		0.3		---		---		---		---		---		---		---		---		---		0.1

Average Precipitation

Years on Record: 42

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		6.3		0.6		0.6		0.7		0.6		0.5		0.2		0.6		0.7		0.3		0.5		0.4		0.6

Average Number of Days With Precipitation

Years on Record: 42

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

Most Reported Precipitation in a Month

Years on Record: 42

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		6.2		2		1.7		3		3.1		2.6		0.8		3.3		6.2		1.6		1.9		2.2		2.5

Most Precipitation Reported in a Day

Years on Record: 42

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		3.6		1.1		0.8		1.5		1.1		1.3		0.7		1.7		3.6		0.9		1.1		1.2		1

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

Years on Record: 42

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		16		2		2		2		2		1		---		1		1		1		1		1		2

Average Snowfall

Years on Record: 42

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		7.5		3.6		1.2		0.8		0.1		0.3		---		---		---		---		---		0.2		1.3

Average Snow Cover

Years on Record: 15

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

Most Snow Reported in a Month

Years on Record: 42

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		28		28		10		7		2		6.5		---		---		---		---		0.1		4		11

Heating Degree Days

Years on Record: 42

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		2144		583		399		252		78		16		2		---		---		1		46		269		498

Cooling Degree Days

Years on Record: 42

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		1189		---		---		---		5		52		218		428		343		133		10		---		---

Growing Degree Days

Years on Record: 42

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		3699.5		---		---		---		165		403		645		892.8		806		549		238.7		---		---

Average Length of Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		12.6		10.4		11.3		12.4		13.7		14.7		15.2		14.9		14		12.8		11.6		10.6		10.1

Average Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		5		2.8		3.7		5.2		6.3		7		7.1		6.6		5.8		5.2		4.1		3.1		2.6

Average Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.4		0.7		1		1.2		1.6		1.9		2.1		2.2		2		1.5		1.1		0.8		0.6

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		5.7		4.8		5.2		6.3		6.5		6.4		6.2		5.9		5.6		5.8		5.6		4.9		4.7

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		6.5		5.5		5.9		7.2		7.5		7.7		7.6		6.7		5.9		6.4		6.3		5.7		5.4

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		5		2.8		3.7		5.2		6.3		7		7.1		6.6		5.8		5.2		4.1		3.1		2.6

Maximum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.6		0.9		1.2		1.4		1.9		2.2		2.3		2.3		2.1		1.7		1.3		0.9		0.7

Maximum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		6.4		5.4		6.5		7.1		7.1		7.1		6.6		6.4		6.4		6.6		7		5.5		5.6

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		7.9		6.3		8.2		8.7		8.8		9.4		8.7		7.9		7.6		7.9		8.5		6.7		6.7

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		4.4		2.3		3		4.8		5.6		6.3		6.5		6.2		5.4		4.7		3.5		2.7		2.3

Minimum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.2		0.6		0.7		1		1.4		1.6		1.9		2		1.7		1.2		0.7		0.7		0.5

Minimum 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		3.7		4		5.7		5.7		5.7		5.7		5.5		5.2		5.1		4.5		4.2		3.9

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		5.2		3.8		4		6.1		6		6.2		6.4		5.9		5.3		5.2		4.5		4.6		4.2