CORVALLIS, OREGON

Average Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		11.2		4.7		6.1		8		9.7		12.7		15.7		18.8		18.9		16.2		11.7		7.2		4.2

Average High Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		16.9		8.2		10.3		13.2		15.2		19.1		22.6		26.9		27.3		24.1		17.8		11.1		7.4

Average Low Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		5.4		1.3		1.8		2.7		4.1		6.3		8.8		10.6		10.5		8.3		5.5		3.3		1

Highest Recorded Temperature

Years on Record: 12

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		40		17		20		23		30		30		37		40		37		36		30		21		19

Lowest Recorded Temperature

Years on Record: 12

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		-20		-20		-19		-6		-2		-2		1		3		3		---		-3		-10		-6

Average Number of Days Above 100F/38C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		0.5		---		---		---		---		---		---		0.3		0.3		---		---		---		---

Average Number of Days Above 90F/32C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		7		---		---		---		---		---		0.3		3		3.8		---		---		---		---

Average Number of Days Above 80F/26C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		45.9		---		---		---		0.3		1		2.8		16.5		16.8		8.7		---		---		---

Average Number of Days Above 70F/21C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		115.1		---		---		0.5		1.8		8.3		19.9		28		29.8		22.3		4.6		---		---

Average Number of Days Above 60F/15C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		192.1		0.3		0.8		7.3		12.8		25.3		29.2		31		31		29.1		22.3		3		0.2

Average Number of Days Above 50F/10C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		290		10		15.1		26		27.3		31		30		31		31		30		30.8		19		8.8

Average Number of Days Above 40F/4C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		353.9		27.3		28		31		30		31		30		31		31		30		31		29		24.6

Average Number of Days Below 70F/21C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		365		31		28		31		30		31		30		31		31		30		31		30		31

Average Number of Days Below 60F/15C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		363.8		31		28		31		30		31		30		29.8		31		30		31		30		31

Average Number of Days Below 50F/10C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		301.3		31		28		30.8		30		28.8		19.2		13.5		11.3		21.3		28.4		28.4		30.8

Average Number of Days Below 40F/4C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		152.9		23.8		22.7		23		16.8		8.8		1.3		---		---		1.4		11.3		19.6		24.4

Average Number of Days Below 32F/0C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		43.8		11.3		9.1		4.8		0.5		---		---		---		---		---		0.8		4.4		13

Average Number of Days Below 20F/-6C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		1.9		0.5		---		---		---		---		---		---		---		---		---		---		1.4

Average Number of Days Below 0F/-17C

Years on Record: 12

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Average Precipitation

Years on Record: 37

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		1166		215		124		161		95		51		38		5		18		47		61		141		209

Average Number of Days With Precipitation

Years on Record: 37

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		143		19		16		17		13		11		7		2		3		6		12		17		20

Most Reported Precipitation in a Month

Years on Record: 37

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		368		327		301		208		136		103		106		43		120		89		277		368		348

Least Reported Precipitation in a Month

Years on Record: 37

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		---		34		29		12		5		2		---		---		---		9		10		8		74

Most Precipitation Reported in a Day

Years on Record: 37

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		91.4		91.4		77.5		47.5		44.7		35.6		46.7		33.3		29.7		47.2		63		70.1		62.2

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

Years on Record: 37

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		91		14		11		12		7		5		4		1		1		3		8		11		14

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

Years on Record: 37

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		25		5		3		3		1		1		---		---		---		1		2		4		5

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

Years on Record: 37

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		7		1		1		1		---		---		---		---		---		---		1		1		2

Average Precipitable Water

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm.		1.7		1.4		1.2		1.3		1.4		1.7		1.9		2.2		2.2		2		1.7		1.5		1.3

Average Number of Rainy Days

Years on Record: 12

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		84		14		9		10		6		5		4		---		1		3		8		9		12

Average Snowfall

Years on Record: 37

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		14.5		8.4		2.8		2		---		---		---		---		---		---		---		0.5		0.8

Most Snow Reported in a Month

Years on Record: 37

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		100.3		100.3		38.1		22.6		---		---		---		---		---		---		---		20.3		8.4

Average Dew Point

Years on Record: 10

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		6		1		2		2		4		7		9		10		11		9		8		5		3

Heating Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		4882		759		620		578		469		317		153		46		40		134		374		603		789

Cooling Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		172		---		---		---		---		1		10		70		72		18		---		---		---

Growing Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		1990		2		1		16		48		157		308		490		497		335		114		17		4

Average Length of Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		12.8		9.9		11		12.5		14		15.4		16.1		15.7		14.5		13		11.4		10.1		9.4

Average Total Sky Cover

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		56.4		75.9		67.2		64.1		58.3		57.1		51.4		31.2		29.3		34.6		56.9		75.5		76.6

Average Opaque Sky Cover

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		51.3		69.2		59.6		58.3		53.5		52.9		46.3		27		25.6		30.8		51		69.3		72

Average Wind Speed

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
km/h		10.1		9		9		9.8		10.1		10		11.2		13.3		12.3		10.1		8.4		8.7		9.3

Average Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		13.8		5.1		8.2		11.9		15.7		19.1		22.2		24.6		21.9		16.7		10.2		5.4		4.4

Average Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		5.1		2.4		3.4		5		6.8		8.1		8.5		7.2		6.1		4.8		3.8		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		15.3		9.1		12.1		14.6		16.2		17.5		19.3		21.9		21.9		19.9		14.8		8.8		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		16.6		9		12.2		14		15.4		17.8		21.8		27.8		26.5		22.5		15.1		8.4		8.1

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		13.8		5.1		8.2		11.9		15.7		19.1		22.2		24.6		21.9		16.7		10.2		5.4		4.4

Maximum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		5.5		2.4		3.5		5.2		7		8.4		9		8.5		7.1		5.7		4		2.7		2.1

Maximum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		19.2		12.5		14.8		19.7		19.3		23.3		22.4		24.9		24.3		24.3		20.3		13.6		11.1

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		23.3		13.4		16.1		21.7		20.9		30.2		29.3		35.5		31.6		30.2		23		14.7		13.1

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		4.3		6		9.2		12.6		14.5		18.6		20.1		18.5		13		7.3		4.3		3.7

Minimum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		4.4		2.3		3.2		4.4		6.4		6.6		7.5		5.8		5.2		3.7		3.1		2.5		1.9

Minimum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		11.7		6.9		7.8		10.5		12.7		13.2		16.3		17.9		18.2		14.7		9.4		6.3		6

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		10.6		6.3		6.6		8.3		9.9		10		15.3		18.5		19		13.9		7.9		5.3		6