FEDERAL WAY, WASHINGTON

Average Temperature

Years on Record: 49

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		11.2		4.3		6.3		7.4		10.1		13.3		15.9		18.1		18.2		15.8		11.8		7.7		5.7

Average High Temperature

Years on Record: 49

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		15.7		7.2		9.9		11.7		14.9		18.7		21.3		24.1		23.8		20.9		16.1		11		8.6

Average Low Temperature

Years on Record: 49

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		6.7		1.3		2.6		3.3		5.1		7.8		10.6		12.2		12.5		10.7		7.5		4.4		2.8

Highest Recorded Temperature

Years on Record: 49

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		36.1		19.4		22.8		22.8		30		32.8		36.1		35.6		35.6		34.4		30		22.2		18.3

Lowest Recorded Temperature

Years on Record: 49

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		-13.9		-12.2		-11.7		-7.8		-4.4		-1.1		2.8		5.6		7.2		2.8		-2.8		-13.3		-13.9

Average Number of Days Above 90F/32C

Years on Record: 49

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		1.9		---		---		---		---		0.1		0.3		0.7		0.7		0.1		---		---		---

Average Number of Days Below 32F/0C

Years on Record: 49

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		33.1		10.5		5.9		4.5		0.7		0.1		---		---		---		---		0.4		3.9		7.2

Average Precipitation

Years on Record: 49

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		955		142		100		89		60		38		37		20		31		52		85		135		165

Average Number of Days With Precipitation

Years on Record: 49

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		158		20		16		17		13		10		9		5		6		9		13		18		22

Most Reported Precipitation in a Month

Years on Record: 49

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		479		255		193		181		134		84		142		76		104		149		188		250		479

Least Reported Precipitation in a Month

Years on Record: 49

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		---		17		26		9		6		6		2		---		---		---		11		20		55

Most Precipitation Reported in a Day

Years on Record: 49

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		81.3		69.3		56.1		46.5		40.1		26.7		50		32.8		38.1		45.7		81.3		69.8		63.2

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

Years on Record: 49

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		92		13		9		10		7		5		4		2		3		5		8		12		14

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

Years on Record: 49

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		22		4		2		2		1		---		1		---		1		1		2		4		4

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

Years on Record: 49

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

Average Snowfall

Years on Record: 49

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		16		9.9		2.3		1.5		---		---		---		---		---		---		---		0.5		1.8

Most Snow Reported in a Month

Years on Record: 49

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		84.6		84.6		27.4		32.3		1.3		---		---		---		---		---		---		12.7		25.4

Heating Degree Days

Years on Record: 49

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		1165.6		263.3		183.9		165		91.7		27.8		3.3		---		---		5		52.8		153.3		219.4

Cooling Degree Days

Years on Record: 49

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		75.6		---		---		---		---		3.3		10.6		27.2		26.1		7.8		0.6		---		---

Growing Degree Days

Years on Record: 49

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		1016.3		---		---		---		1.7		101.6		178.3		251.4		254.9		173.3		55.1		---		---

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		15.8		16.5		16.1		14.7		13		11.3		9.9		9.1

Average Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		12.8		4.4		7.6		11.3		15.7		18.6		20.7		22.9		20.3		15.3		9.1		4.9		3.7

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		2.7		4		5.9		7.7		9		9.5		9.2		8		6.7		4.5		3		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		13.9		7.1		10.9		13.5		16.2		17.1		18		20.4		20.2		17.8		12.3		7.8		6.1

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		13.4		6.2		9.8		11.6		14.5		16.2		18.4		22.5		21.3		17.1		11.5		6.7		5.5

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		12.8		4.4		7.6		11.3		15.7		18.6		20.7		22.9		20.3		15.3		9.1		4.9		3.7

Maximum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		6.4		3.1		4.4		6.5		7.7		9.1		9.6		10		8.3		7.4		5.3		3.6		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		16.9		9.5		12.3		17.6		19.1		22		20.9		23.9		22.3		21.2		15.7		10.7		7.3

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		17.5		8.3		11.4		16.4		19.3		24.9		24.1		27.6		24.2		21.4		15.3		9.7		6.8

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		10.7		3.8		5.7		9.4		13.4		14.9		17.1		19		17.9		12.5		7.4		4.1		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		5.7		2.4		3.4		5.6		7.5		8.8		9.3		9		7.9		6.2		4		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		11.4		5.9		7.8		10.8		13.5		13.5		14.9		16.9		17.6		14.1		9.7		6.2		5.3

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		9.7		5		6.6		8.3		10.4		10		12.2		16		17.1		12.6		8.7		5.1		4.6