MANASSAS, VIRGINIA

Home > North America > United States > Virginia
Elevation: 212 feet Latitude: 38 47N Longitude: 077 30W

WEATHER

Monthly - Summary

Nearby

Forecast

Monthly - All Data

Climate Summary

Daily Averages

Hourly Data

CURRENT CONDITIONS

Sunrise/Set

06:26 am

07:51 pm
Local Time
10:07 am EDT
19 April, 2024

PRINT THIS DATA

MONTHLY - ALL WEATHER AVERAGES [ Show Summary ]

[ °C ] °F

TEMPERATURE

Average Temperature

Years on Record: 90

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		55.5		33.9		35.3		44.7		54.7		64.5		72.4		76.7		75.2		68.8		56.9		46.5		36.8

Average High Temperature

Years on Record: 90

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		66.9		43.7		45.7		56.3		67.3		76.8		84.3		88.3		86.5		80.6		69.1		57.6		46.4

Average Low Temperature

Years on Record: 90

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		44.2		24.2		25		33		42.2		52.2		60.4		65.3		63.9		57.1		44.7		35.3		27.1

Highest Recorded Temperature

Years on Record: 90

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		104		77		76		85		95		96		100		104		103		101		93		85		75

Lowest Recorded Temperature

Years on Record: 90

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		-21		-8		-21		-5		19		29		40		48		40		33		19		9		-2

Average Number of Days Above 100F/38C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		0.5		---		---		---		---		---		---		0.5		---		---		---		---		---

Average Number of Days Above 90F/32C

Years on Record: 90

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		39		---		---		---		0.4		2		7.7		13.5		10.4		4.7		0.3		---		---

Average Number of Days Above 80F/26C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		111.3		---		---		0.6		3		9.1		21.9		30.5		27.4		15.2		3.4		0.2		---

Average Number of Days Above 70F/21C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		172.8		---		0.9		3.3		12.3		22.7		29.3		31		30.8		26.6		13.1		2.4		0.3

Average Number of Days Above 60F/15C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		232.5		2.8		3.7		10.2		22.3		29.8		30		31		31		29.9		25.4		13.5		2.8

Average Number of Days Above 50F/10C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		285.3		7.8		9.9		22.3		28.1		31		30		31		31		30		30.2		24.2		9.9

Average Number of Days Above 40F/4C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		334.8		18.3		20		28.9		30		31		30		31		31		30		31		29.7		23.9

Average Number of Days Below 70F/21C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		341.1		31		28		31		30		31		26.3		20.5		22.5		28.8		31		30		31

Average Number of Days Below 60F/15C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		264.9		31		28		31		30		24.2		9.3		0.6		2.1		18		29.8		30		31

Average Number of Days Below 50F/10C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		214		31		28		30.4		26.8		11.1		0.2		---		---		4.6		22.5		28.5		30.8

Average Number of Days Below 40F/4C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		160.2		29.6		26.9		26.3		13.6		1.6		---		---		---		---		11		21.4		29.8

Average Number of Days Below 32F/0C

Years on Record: 90

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		102.1		24.3		21.4		14.5		4.3		0.3		---		---		---		---		3.3		12.3		21.6

Average Number of Days Below 20F/-6C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		26.1		11		7.4		1.7		---		---		---		---		---		---		---		0.5		5.5

Average Number of Days Below 10F/-12C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		3.4		2		1.3		---		---		---		---		---		---		---		---		---		0.2

Average Number of Days Below 0F/-17C

Years on Record: 90

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		0.9		0.5		0.2		0.1		---		---		---		---		---		---		---		---		0.1

PRECIPITATION

Average Precipitation

Years on Record: 90

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in.		35.7		2.4		2.5		2.9		2.9		3.5		3.4		3.5		3.4		3		2.7		2.6		3

Average Number of Days With Precipitation

Years on Record: 90

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		81		6		6		7		8		8		7		8		7		5		5		6		6

Most Precipitation Reported in a Day

Years on Record: 90

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in.		9.5		3.5		3.5		4.5		2.4		2.9		9.5		3.6		2.8		6		2.8		2.9		3.3

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

Years on Record: 90

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		63		5		5		6		6		6		5		6		6		4		4		5		5

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

Years on Record: 90

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		25		2		2		2		2		2		2		3		2		2		2		2		2

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

Years on Record: 90

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

PRECIPITATION - RAIN

Most Rain Reported in a Month

Years on Record: 90

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in.		48.6		5.5		6.1		6.3		6		9.1		12.2		9.8		13.5		10.2		5.7		6.9		7.8

Least Rain Reported in a Month

Years on Record: 90

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in.		25.9		---		---		---		0.4		0.3		0.7		0.6		0.8		0.1		0.1		0.2		0.1

PRECIPITATION - SNOW

Average Snowfall

Years on Record: 90

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in.		17		4.9		6.4		2.4		0.1		---		---		---		---		---		---		0.7		2.4

Most Snow Reported in a Month

Years on Record: 90

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in.		42.9		32.2		34.5		22.4		4		---		---		---		---		---		---		9		12.5

DEGREE DAYS

Heating Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		4639		976		812		651		333		116		7		---		---		40		287		551		866

Cooling Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		1309		---		---		1		13		85		270		407		367		147		19		---		---

Growing Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		3924		6		8		44		173		436		712		872		832		558		225		51		5

SKY CONDITIONS

Average Length of Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		12.7		10.3		11.3		12.4		13.7		14.8		15.4		15.1		14.1		12.8		11.6		10.5		10

SOLAR RADIATION

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		1.9		2.7		3.7		4.7		5.2		5.6		5.6		4.9		4.2		3.4		2.2		1.7

Average Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.6		0.8		1.1		1.6		2		2.3		2.5		2.4		2.1		1.7		1.2		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		3.1		3.6		4.3		4.7		4.8		4.9		5		4.8		4.7		4.5		3.3		2.7

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		4.1		3.1		3.6		4		4.4		4.5		4.8		4.9		4.5		4.5		4.6		3.3		2.7

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		1.9		2.7		3.7		4.7		5.2		5.6		5.6		4.9		4.2		3.4		2.2		1.7

Maximum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.7		0.8		1.2		1.6		2.1		2.4		2.5		2.5		2.2		1.7		1.3		0.9		0.8

Maximum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		5		4		4.6		5.1		5.5		5.7		5.6		5.4		5.3		5.6		5.5		4.3		3.5

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		5.4		4.2		5		5.3		5.9		6.3		6.2		5.8		5.4		6.2		6		4.8		3.7

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		1.7		2.1		3		4.1		3.5		4.7		4.9		4.4		3.5		2.7		1.5		1.3

Minimum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.5		0.8		1		1.4		1.9		2.2		2.4		2.3		2		1.5		1		0.8		0.7

Minimum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		3.3		2.6		2.6		3.4		4.1		3.3		4.2		4.4		4.2		3.7		3.4		1.9		2

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		2.7		2.4		2.1		2.7		3.4		2		3.3		3.8		3.6		3.1		3		1.6		1.8

NEARBY - MAP

NEARBY - LIST

Dulles, Virginia (11 mi / 19 km)
Herndon, Virginia (11 mi / 19 km)
Reston, Virginia (11 mi / 19 km)
Sterling, Virginia (13 mi / 22 km)
The Plains, Virginia (14 mi / 22 km)

GEOBA.SE

Manassas, Virginia