OKANOGAN, WASHINGTON

Average Temperature

Years on Record: 102

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		9.2		-4.8		-1.2		4.7		10.1		14.7		18.6		22.3		21.4		16.2		9.3		1.9		-2.8

Average High Temperature

Years on Record: 102

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		16.1		-1.1		3.5		11.1		17.8		23.1		27		31.6		30.6		25.1		16.8		6.4		0.6

Average Low Temperature

Years on Record: 102

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		2.4		-8.6		-5.8		-1.7		2.3		6.3		10.1		13.1		12.2		7.4		1.9		-2.5		-6.2

Highest Recorded Temperature

Years on Record: 102

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		45.6		15.6		17.2		26.1		35.6		38.3		41.7		45.6		41.7		38.9		32.2		25		19.4

Lowest Recorded Temperature

Years on Record: 102

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		-32.2		-30		-32.2		-21.7		-9.4		-7.2		-1.1		1.7		-0.6		-6.7		-13.3		-21.1		-29.4

Average Number of Days Above 90F/32C

Years on Record: 102

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		36.7		---		---		---		0.1		1.2		4.8		15.2		12.9		2.5		---		---		---

Average Number of Days Below 32F/0C

Years on Record: 102

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		151.6		29.6		25.4		22.2		9.6		2.2		0.1		---		---		1.6		10.8		21.6		28.4

Average Number of Days Below 0F/-17C

Years on Record: 102

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		7.1		3.9		1.5		0.1		---		---		---		---		---		---		---		0.1		1.6

Average Precipitation

Years on Record: 102

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		300		34		28		20		22		24		28		14		13		14		23		37		42

Average Number of Days With Precipitation

Years on Record: 102

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		67		8		6		5		5		5		6		3		3		4		5		8		9

Most Reported Precipitation in a Month

Years on Record: 102

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		127		99		86		74		69		112		116		118		73		73		74		96		127

Least Reported Precipitation in a Month

Years on Record: 102

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

Most Precipitation Reported in a Day

Years on Record: 102

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		56.1		49.8		27.7		18.5		31.8		44.5		56.1		51.8		29.2		36.3		27.4		27.2		48.3

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

Years on Record: 102

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		35		4		3		3		2		3		3		1		1		2		3		5		5

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

Years on Record: 102

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

Average Snowfall

Years on Record: 102

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		56.6		18.5		10.4		1.8		---		---		---		---		---		---		---		6.3		19.6

Average Snow Cover

Years on Record: 68

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		2		17		10		2		---		---		---		---		---		---		---		---		7

Most Snow Reported in a Month

Years on Record: 102

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		92.2		76.7		80		21.6		1.3		---		---		---		---		---		5.1		52.1		92.2

Heating Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		3742.8		723.3		538.3		420		258.3		134.4		52.8		18.3		9.4		95.6		296.7		507.2		688.3

Cooling Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		313.3		---		---		---		---		7.2		45		120.6		103.3		37.2		---		---		---

Growing Degree Days

Years on Record: 102

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		1325.2		---		---		---		1.7		144.7		256.7		382.3		353.1		186.7		---		---		---

Average Length of Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		12.8		9.5		10.8		12.5		14.3		15.9		16.7		16.3		14.8		13.1		11.3		9.8		9

Average Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		13.6		4.9		8.2		12.6		16.9		20.3		22		23.9		20.8		15.8		9.6		5.2		3.9

Average Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		6.2		2.8		4.2		6.2		7.6		8.9		9.5		9.4		8.1		6.8		4.8		3		2.4

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		15.2		8.3		12.6		15.7		17.8		18.6		19		21.3		20.9		18.5		13.4		8.6		7.2

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		15.1		7.6		11.2		14.1		17.2		19.1		20.5		24.1		22.4		18.2		12.7		7.5		6.4

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		13.6		4.9		8.2		12.6		16.9		20.3		22		23.9		20.8		15.8		9.6		5.2		3.9

Maximum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		6.5		3.1		4.5		6.8		7.7		9.1		9.7		10.4		8.7		7.5		5.3		3.4		2.6

Maximum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		17.6		9.5		14.2		18.8		20.3		22.2		21.6		24.2		22.8		21.8		16.7		10.6		8.2

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		18.2		8.8		12.7		17.9		21.2		25.2		25.4		27.9		24.8		22		16.5		9.2		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		11.4		4.4		6.7		11		13.8		16.9		19.6		17.9		18		13		8.4		4.4		3.3

Minimum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		5.9		2.7		3.7		5.9		7.5		8.8		9.4		9.1		7.9		6.3		4.3		2.7		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		12.5		7.3		10.1		13.8		14		15.4		17		15.8		17.9		14.9		11.5		7		5.7

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		11.2		6.6		8.6		11.4		11.3		13.2		16.4		14.2		17.7		13.6		10.6		6		4.9