VERNONIA, OREGON

Average Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		9.1		2.6		4.2		6.1		8.1		10.8		13.5		16		16.3		14		9.7		5.3		2.7

Average High Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		15.4		6.8		9.3		11.9		14.5		17.7		20.6		24		24.7		22.5		16.8		10		6.6

Average Low Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		2.7		-1.6		-1.1		0.3		1.7		4		6.4		7.9		7.8		5.4		2.5		0.7		-1.2

Highest Recorded Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		29		9.6		13.6		16.6		17.1		21.9		23.4		29		28.4		26.4		21.1		13.1		8.7

Lowest Recorded Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		-7.8		-7.8		-5.9		-2.1		-1.7		2.3		4.9		6.6		5.6		2.4		-0.3		-4.6		-6.8

Average Number of Days Above 90F/32C

Years on Record: 75

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		10.1		---		---		0.1		0.2		0.5		1		3.1		2.7		2.3		0.1		---		---

Average Number of Days Below 32F/0C

Years on Record: 75

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		100.5		18.9		15.4		16.6		10.1		4		0.4		---		0.1		1		6		12.4		15.6

Average Number of Days Below 0F/-17C

Years on Record: 75

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		0.4		0.3		---		---		---		---		---		---		---		---		---		---		---

Average Precipitation

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		1248		190		150		134		95		60		42		16		20		53		93		192		204

Average Number of Days With Precipitation

Years on Record: 75

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		155		19		17		18		14		12		9		4		5		8		13		17		19

Most Reported Precipitation in a Month

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		446		381		427		244		216		123		106		70		75		126		204		384		446

Least Reported Precipitation in a Month

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		---		13		10		46		22		7		10		---		---		---		2		37		56

Most Precipitation Reported in a Day

Years on Record: 75

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		128.8		67.8		73.9		54.1		46.2		28.2		45.7		16		25.1		49.5		65		79		128.8

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

Years on Record: 75

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		110		14		13		14		8		8		5		2		3		4		10		14		15

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

Years on Record: 75

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		34		5		5		4		2		1		1		---		1		1		3		5		6

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

Years on Record: 75

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

Average Snowfall

Years on Record: 75

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		106.9		42.4		17.5		22.4		2		0.5		---		0.2		---		---		---		1.8		20.1

Average Snow Cover

Years on Record: 19

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		---		5		2		---		---		---		---		---		---		---		---		---		2

Most Snow Reported in a Month

Years on Record: 75

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		268.7		268.7		129.5		154.9		15.2		10.2		---		7.6		---		---		1.3		15.2		127.8

Heating Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		3388.9		488.9		397.2		378.9		307.2		232.8		146.1		83.3		76.1		135		269.4		389.4		484.4

Cooling Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		25.6		---		---		---		---		---		0.6		10		11.1		3.9		---		---		---

Growing Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		631.4		---		---		---		---		25.8		105		186		194.6		120		---		---		---

Average Length of Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		12.8		9.7		10.9		12.5		14.1		15.6		16.3		15.9		14.6		13		11.4		10		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		12.3		4.3		7.5		11.2		14.9		18		19.6		20.9		19.2		14.8		8.8		4.8		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		5.9		2.7		4		5.9		6.7		8.9		9.4		9.1		8		6.6		4.4		2.9		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		13.2		6.8		10.4		13.2		15.4		16.5		17		18.7		19		17		11.7		7.2		5.7

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		12.4		5.8		9.4		11.1		14.7		15		16.3		19.4		19.2		16.1		10.7		6.1		5.1

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		12.3		4.3		7.5		11.2		14.9		18		19.6		20.9		19.2		14.8		8.8		4.8		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		6.3		3.1		4.4		6.5		7.1		9		9.5		9.2		8.1		7.1		5.1		3.4		2.8

Maximum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		16.2		9.1		12.4		17.2		19.5		20.2		20.1		22.1		21.1		19.9		15.1		9.8		7.8

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		16.6		8.1		11.5		15.9		20.4		21.8		22.4		25.5		22.7		19.8		14.3		8.8		7.4

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		9.9		3.6		5.7		8.6		12.4		14.6		16.3		14.7		16.1		12.6		7		4.1		3.1

Minimum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		5.6		2.4		3.4		5.4		6.4		8.7		9.2		8.9		7.9		6.2		3.8		2.6		2.1

Minimum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		10.4		5.4		7.6		9.6		12.7		13.3		14.3		13.1		15.7		14.1		9		5.9		4.6

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		8.4		4.3		6.3		6.8		10.8		9.5		11.1		9.4		13.6		12.5		7.8		4.7		3.8