WESTLAKE, OREGON

Average Temperature

Years on Record: 39

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		52		43.2		45.6		46.4		49.2		53		57.4		60.3		61.2		59.6		54.7		48.5		45.1

Average High Temperature

Years on Record: 39

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		61.7		50.3		53.8		55.2		58.8		63.2		67.8		72		73		71.7		65.1		57.3		52.1

Average Low Temperature

Years on Record: 39

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		42.4		36		37.4		37.7		39.6		42.9		47.1		48.6		49.3		47.5		44.2		39.8		38.1

Highest Recorded Temperature

Years on Record: 39

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		102		70		80		82		93		98		98		101		102		101		94		80		69

Lowest Recorded Temperature

Years on Record: 39

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		10		12		16		23		24		28		30		35		33		28		25		17		10

Average Number of Days Above 90F/32C

Years on Record: 39

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		2.1		---		---		---		0.1		0.2		0.2		0.2		0.5		0.9		0.1		---		---

Average Number of Days Below 32F/0C

Years on Record: 39

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		46.2		11		7.5		7.3		3.9		1.3		0.1		---		---		0.2		1.4		6.1		7.5

Average Precipitation

Years on Record: 39

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		80.2		13.3		9.9		9.6		5.3		3.8		2.4		0.8		1.1		2.7		7.2		11.1		13.1

Average Number of Days With Precipitation

Years on Record: 39

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		176		22		19		20		17		14		10		5		6		8		14		19		22

Most Reported Precipitation in a Month

Years on Record: 39

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		24.9		24.9		18.5		18.8		12.2		10.2		8		2.9		7.2		7.6		18.9		21		21.3

Least Reported Precipitation in a Month

Years on Record: 39

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		---		3.7		2.7		2		1.4		0.4		0.1		---		---		0.4		0.6		0.9		5.1

Most Precipitation Reported in a Day

Years on Record: 39

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		5.1		4.2		3.7		3.2		2.6		2.7		2.3		1.3		1.6		3.1		5.1		3.8		4

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

Years on Record: 39

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		130		19		15		16		11		9		6		2		3		5		11		15		18

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

Years on Record: 39

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		56		10		7		7		4		2		1		---		1		2		5		8		9

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

Years on Record: 39

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		23		4		3		3		1		1		---		---		---		1		2		4		4

Average Snowfall

Years on Record: 39

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		4.5		2.7		0.6		0.5		---		---		---		---		---		---		---		0.1		0.6

Most Snow Reported in a Month

Years on Record: 39

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		43		43		4.8		5.4		0.3		---		---		---		---		---		---		3.1		6

Heating Degree Days

Years on Record: 39

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		1783		367		268		268		182		93		19		2		1		10		66		199		308

Cooling Degree Days

Years on Record: 39

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		32		---		---		---		---		1		3		6		11		9		2		---		---

Growing Degree Days

Years on Record: 39

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		1415.2		---		---		---		---		93		222		319.3		347.2		288		145.7		---		---

Average Length of Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		12.7		9.9		11		12.5		14		15.3		16		15.6		14.4		12.9		11.4		10.2		9.5

Average Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		3.7		1.4		2.2		3.3		4.4		5.5		6.1		6.4		5.7		4.4		2.8		1.5		1.2

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		1.4		1.9		2.2		2.4		2.1		1.8		1.4		1.1		0.7		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		4.1		2.3		3.2		4		4.6		5		5.3		5.7		5.7		5.2		4		2.4		2

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		3.2		3.9		4.5		5.3		5.8		6.8		6.5		5.7		4.1		2.3		2

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		3.7		1.4		2.2		3.3		4.4		5.5		6.1		6.4		5.7		4.4		2.8		1.5		1.2

Maximum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.5		0.7		1		1.5		2		2.3		2.5		2.4		2		1.6		1.1		0.8		0.6

Maximum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		5.1		3.6		3.8		5.3		5.8		6.2		6		6.7		6.2		6.2		5		3.5		3

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		6		3.8		4		5.8		6.5		7.8		7.6		9.2		7.6		7.3		5.5		3.7		3.6

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		1.7		2.5		3.5		4.3		5.1		5.3		4.8		3.7		2		1.2		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		1.3		0.6		0.9		1.3		1.7		1.9		2.2		1.8		1.7		1.2		1		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		3.2		1.8		2.2		2.9		3.6		3.9		4.5		4.8		4.7		4.1		2.6		1.8		1.5

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		1.6		1.9		2.3		2.8		3.2		4.2		4.7		4.6		3.9		2.2		1.5		1.5