WASHINGTON, DISTRICT OF COLUMBIA

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Elevation: 10 feet Latitude: 38 51N Longitude: 077 02W

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MONTHLY - ALL WEATHER AVERAGES [ Show Summary ]

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TEMPERATURE

Average Temperature

Years on Record: 51

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		58		36		38		46		57		66		75		79		78		71		60		49		39

Average High Temperature

Years on Record: 51

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		67		43		46		55		67		76		84		88		86		80		69		58		47

Average Low Temperature

Years on Record: 51

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		49		28		30		37		46		56		65		70		69		62		50		40		32

Highest Recorded Temperature

Years on Record: 51

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		104		79		82		89		95		99		101		104		103		101		94		86		75

Lowest Recorded Temperature

Years on Record: 51

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		-5		-5		4		14		24		34		47		54		49		39		29		16		3

Average Number of Days Above 90F/32C

Years on Record: 51

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		35		---		---		---		---		2		7		13		9		3		---		---		---

Average Number of Days Above 70F/21C

Years on Record: 51

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		177		---		1		4		11		24		29		31		31		27		15		4		1

Average Number of Days Below 32F/0C

Years on Record: 51

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		71		21		18		9		1		---		---		---		---		---		---		5		16

Average Number of Days Below 10F/-12C

Years on Record: 51

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

PRECIPITATION

Average Precipitation

Years on Record: 51

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in.		39.3		2.8		2.6		3.4		2.8		3.9		3.3		4		4.1		3.3		3		3		3.1

PRECIPITATION - RAIN

Average Number of Rainy Days

Years on Record: 52

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		112		10		9		11		10		11		9		10		9		8		7		9		9

Average Number of Days With Thunderstorms

Years on Record: 50

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		31		---		---		1		3		5		6		7		5		2		1		1		---

Most Rain Reported in a Month

Years on Record: 51

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in.		57.5		7.1		5.7		8.4		6.9		10.7		11.5		12.9		14.3		12.4		8.6		6.7		6.5

Least Recorded Rainfall

Years on Record: 51

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in.		26.9		0.3		0.4		0.7		---		0.8		0.9		0.9		0.5		0.2		---		0.3		0.2

PRECIPITATION - SNOW

Average Snowfall

Years on Record: 50

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in.		16.6		5.3		5.3		2.1		---		---		---		---		---		---		---		0.8		3.1

HUMIDITY

Average Morning Relative Humidity

Years on Record: 54

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		75		71		70		70		70		75		76		77		81		82		81		76		72

Average Evening Relative Humidity

Years on Record: 54

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		52		55		50		47		46		51		52		53		54		55		53		53		55

Average Dew Point

Years on Record: 54

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		45		23		24		31		40		52		61		66		65		59		48		37		27

DEGREE DAYS

Heating Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		4047		942		770		552		264		60		---		---		---		14		195		456		794

Cooling Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		1549		---		---		---		9		104		318		465		419		203		31		---		---

Growing Degree Days

Years on Record: 51

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		4163		---		---		---		210		496		750		899		868		630		310		---		---

VISIBILITY

Average Number of Days With Fog

Years on Record: 50

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		130		11		10		10		9		12		10		10		11		12		13		11		11

Average Number of Clear Days

Years on Record: 45

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		97		8		7		7		7		7		8		7		9		10		11		8		8

Average Possibility of Sunshine

Years on Record: 45

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		56		47		51		55		56		58		64		62		62		61		59		51		46

Average Number of Cloudy Days

Years on Record: 45

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		163		16		14		15		14		14		11		12		12		12		12		14		16

Average Number of Partly Cloudy Days

Years on Record: 45

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		105		7		7		9		9		10		11		12		10		8		8		8		7

WIND

Average Wind Speed

Years on Record: 54

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mph		10		13		13		13		9		9		9		9		9		9		9		9		13

NEARBY - MAP

NEARBY - LIST

Alexandria, Virginia (0 mi / 0 km)
Arlington, Virginia (0 mi / 0 km)
Arlington - Waverly Hills, Virginia (4 mi / 6 km)
Forest Heights, Maryland (4 mi / 8 km)
Washington - Northeast, District of Columbia (4 mi / 7 km)

GEOBA.SE

Washington, District of Columbia

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