COLTON, WASHINGTON

Average Temperature

Years on Record: 39

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		54.7		34.8		39.7		46.5		54.5		61.2		67.7		75.5		73.5		66.4		55.8		43.1		38.3

Average High Temperature

Years on Record: 39

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		66.2		40.9		47.7		56.4		66.7		75		82.2		91.8		89.6		81.4		67.4		50.5		44.5

Average Low Temperature

Years on Record: 39

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		43.2		28.1		31.7		36.6		42.1		47.3		53.2		59.2		57.3		51.4		44.2		35.7		32

Highest Recorded Temperature

Years on Record: 39

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		112		64		71		79		96		103		109		112		110		105		94		77		69

Lowest Recorded Temperature

Years on Record: 39

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		-10		-10		-6		11		19		26		21		43		42		29		11		---		-4

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		51		---		---		---		0.1		2.4		6.3		19.1		16.6		6.3		0.2		---		---

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		65.7		18.7		12.8		7.4		1.3		0.1		---		---		---		0.1		1.1		9		15.1

Average Number of Days Below 0F/-17C

Years on Record: 39

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		1.2		0.7		0.4		---		---		---		---		---		---		---		---		---		---

Average Precipitation

Years on Record: 39

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		18.3		2.3		1.6		1.9		1.2		1.2		1.5		0.3		0.4		1		1.6		2.5		2.7

Average Number of Days With Precipitation

Years on Record: 39

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		83		10		8		10		7		6		6		2		2		4		7		10		11

Most Reported Precipitation in a Month

Years on Record: 39

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		7.5		7.3		4.7		5.5		2.8		3.5		4.4		1.5		1.5		4.6		3.5		5.3		7.5

Least Reported Precipitation in a Month

Years on Record: 39

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		---		0.2		0.3		0.5		---		0.2		---		---		---		---		---		0.3		0.3

Most Precipitation Reported in a Day

Years on Record: 39

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		2.5		1.5		1.6		2.5		1.2		1		2		0.8		1.2		2.1		1.4		1.8		1.6

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		54		7		5		6		4		4		4		1		1		3		5		7		7

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		9		1		1		1		---		---		1		---		---		1		1		1		2

Average Snowfall

Years on Record: 39

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		4.9		2.3		0.8		0.1		---		---		---		---		---		---		---		0.2		1.5

Most Snow Reported in a Month

Years on Record: 39

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		9.8		9.8		4.7		2		---		---		---		---		---		---		---		1.5		8

Heating Degree Days

Years on Record: 39

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		2389		627		431		272		85		18		1		---		---		5		75		358		517

Cooling Degree Days

Years on Record: 39

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		872		---		---		---		5		38		117		327		271		106		8		---		---

Growing Degree Days

Years on Record: 39

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		3204		---		---		---		135		347.2		531		790.5		728.5		492		179.8		---		---

Average Length of Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		12.8		9.6		10.9		12.5		14.2		15.7		16.4		16		14.7		13		11.4		9.9		9.2

Average Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		3.8		1.3		2.3		3.5		4.8		5.7		6.4		6.8		5.9		4.4		2.7		1.4		1.1

Average Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.7		0.8		1.2		1.7		2.1		2.5		2.6		2.6		2.3		1.9		1.3		0.9		0.7

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		4.2		2.3		3.4		4.4		5		5.2		5.5		6		5.9		5.1		3.7		2.3		1.9

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		4.2		2		3		3.9		4.9		5.3		6.1		6.8		6.3		4.9		3.5		2		1.7

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		3.8		1.3		2.3		3.5		4.8		5.7		6.4		6.8		5.9		4.4		2.7		1.4		1.1

Maximum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.9		0.9		1.3		1.9		2.2		2.5		2.8		3		2.4		2.1		1.5		1		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		4.9		2.7		3.8		5.2		5.8		6.3		6.5		6.9		6.3		6.2		4.5		2.9		2.2

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		5.1		2.3		3.5		5		6.1		7.2		7.7		7.8		6.9		6.2		4.4		2.6		2

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		1.2		1.8		3.1		4		4.8		5.2		4.7		5.1		3.3		2.2		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		1.6		0.7		1		1.7		2.1		2.4		2.6		2.5		2.2		1.7		1.1		0.7		0.6

Minimum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		3.4		2		2.6		3.7		4		4.4		4.5		4.1		5.1		3.7		2.9		1.8		1.7

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		3		1.7		2.2		3.2		3.3		3.8		4.2		3.4		5.1		3.2		2.6		1.4		1.5