CHARLESTON, SOUTH CAROLINA

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Elevation: 41 feet Latitude: 32 54N Longitude: 080 02W

WEATHER

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CURRENT CONDITIONS

Sunrise/Set

06:37 am

07:57 pm
Local Time
5:05 pm EDT
25 April, 2024

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MONTHLY - ALL WEATHER AVERAGES [ Show Summary ]

[ °C ] °F

TEMPERATURE

Average Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		65.9		48.3		51.7		58.1		64.8		72.5		79		82.1		80.9		76		66.9		58.6		50.8

Average High Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		76.2		59		62.8		69.6		76.4		83.2		88.4		91.1		89.5		84.8		77.1		69.8		61.6

Average Low Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		55.6		37.5		40.6		46.7		53.3		61.8		69.6		73		72.3		67.2		56.8		47.5		40.1

Highest Recorded Temperature

Years on Record: 70

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		105		83		87		90		95		98		103		104		105		99		94		88		83

Lowest Recorded Temperature

Years on Record: 70

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		6		6		12		15		29		36		50		58		56		42		27		15		8

Average Heat Index Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		66.5		48.4		51.6		57.9		64.9		72.8		80.3		85.1		83.3		76.7		66.8		58.2		50.9

Average Wind Chill Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		64.7		45.6		49.5		56.8		64.6		72.2		78.2		81.1		79.9		75.3		66.4		57.3		48.8

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		0.8		---		---		---		---		---		0.2		0.5		0.1		---		---		---		---

Average Number of Days Above 90F/32C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		55.2		---		---		---		0.7		3.5		12		19.4		14.7		4.5		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		166.2		0.1		0.5		3.7		9.8		22.9		28.2		30.7		30.1		24.7		12		2.9		0.6

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		252.9		4.9		7.4		16.1		23.9		30.3		29.9		31		30.9		29.7		25.9		16		6.9

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		314.4		14.8		16.9		26.7		29.4		30.9		30		31		31		30		30.6		25.7		17.5

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		350.9		24.9		25		30.3		30		31		30		31		31		30		31		29.5		27.2

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		363.2		30		27.8		31		30		31		30		31		31		30		31		30		30.4

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		280.1		31		28		31		30		27.8		13.6		3.7		6.1		18.5		29.5		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		202.1		30.7		27.5		29.1		23.2		11.1		1.2		---		0.2		3.7		18.6		26.6		30.2

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		131.9		27.2		23.3		19.5		10.3		1.6		---		---		---		0.1		7.2		17.3		25.4

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		66.5		18.9		13.9		7.6		1.5		---		---		---		---		---		1.1		7.3		16.3

Average Number of Days Below 32F/0C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		24.4		9.7		4.7		1.5		0.1		---		---		---		---		---		---		1.3		7.2

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		1.8		1.1		0.2		---		---		---		---		---		---		---		---		---		0.6

PRECIPITATION

Average Precipitation

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in.		51		3.7		3		3.7		2.9		3		5.7		6.5		7.2		6.1		3.8		2.4		3.1

Average Number of Days With Precipitation

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		112.7		9.6		8.6		7.9		7.7		7.8		11.9		13		13.2		10		7.3		7		8.7

Avg. No. of Days w/Precip. Above 0.1in/2.5mm

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		74.4		6.2		5.2		5.1		5.1		5.1		7.9		8.9		9.4		6.8		4.7		4.3		5.7

Avg. No. of Days w/Precip. Above 0.5in/13mm

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		33.4		2.5		2		2.4		1.9		2.3		3.9		4.2		4.7		3.5		2.3		1.5		2.2

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

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		14.8		1		0.7		1.3		0.8		0.9		1.7		1.9		2.1		2		1		0.7		0.7

Average Precipitable Water

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in.		1.1		0.7		0.7		0.7		0.8		1.2		1.6		1.8		1.8		1.5		1.1		0.8		0.7

PRECIPITATION - RAIN

Average Number of Rainy Days

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		106		10		8		9		7		8		10		10		12		10		6		8		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		59		1		1		2		3		7		10		14		12		5		2		1		1

Most Rain Reported in a Month

Years on Record: 50

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in.		73		8.9		6.3		11.1		9.5		9.3		27.2		18.5		17		17.3		12.1		7.3		7.1

Least Recorded Rainfall

Years on Record: 50

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in.		30.3		0.6		0.3		0.7		---		0.7		1		1.8		0.7		0.2		0.2		0.5		0.7

PRECIPITATION - SNOW

Average Snowfall

Years on Record: 30

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

Average Number of Days With Snow

Years on Record: 30

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

Avg. No. of Days w/Snow Above 1in/2.5cm

Years on Record: 30

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

Avg. # of Days w/Snow Depth Above 1in/2.5cm

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		0.3		---		0.1		---		---		---		---		---		---		---		---		---		0.2

Avg. # of Days w/Snow Depth Above 3in/7.5cm

Years on Record: 30

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

HUMIDITY

Average Relative Humidity

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		73.6		70		68.6		67.6		68.6		72.7		77.3		78.2		79.7		78.4		76.7		73.4		71.8

Average Morning Relative Humidity

Years on Record: 51

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		86		83		81		83		84		85		86		88		90		91		89		86		83

Average Evening Relative Humidity

Years on Record: 51

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		58		55		52		51		51		56		62		66		66		65		58		56		55

Average Dew Point

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		55.7		37.6		40.3		45.5		52.4		61.5		69.4		72.8		72.4		67.4		57.9		48.6		41.3

DEGREE DAYS

Heating Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		1977		521		377		239		88		12		1		---		---		3		66		223		446

Cooling Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		2304		2		5		27		84		244		421		529		493		333		126		33		7

Growing Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		6179		92		123		277		447		697		870		993		958		780		526		281		134

BAROMETER

Average Sea Level Pressure

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
InHg		30.1		30.1		30.1		30.1		30		30		30		30		30		30		30.1		30.1		30.1

SKY CONDITIONS

Average Length of Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		12.6		10.7		11.5		12.4		13.5		14.3		14.8		14.5		13.7		12.8		11.7		10.9		10.5

Average Number of Days With Fog

Years on Record: 50

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		160		14		11		13		12		14		13		11		14		16		14		14		14

Average Percent Chance - Clear Skies

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		35.3		39		37.9		39.7		39.7		33.7		26.8		26.5		26.4		32.9		39.6		43.1		38.2

Average Percent Chance - Scattered Clouds

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		9.2		5.1		5.4		6.9		9.2		11.1		13.4		14.2		13.5		11.1		8.2		6.6		5.9

Average Percent Chance - Few Clouds

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		13		8.8		8.5		10.7		13.2		15.7		17.2		18.1		16.7		15.1		11.5		10.4		9.4

Average Percent Chance - Broken Clouds

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		16.5		11.7		12.4		14.2		15.1		18.4		22.1		22.2		21.5		18.3		14.8		14		13.4

Average Percent Chance - Overcast Skies

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		26		35.4		35.8		28.4		22.7		21.1		20.5		18.9		21.9		22.6		25.9		26		33.1

Average Total Sky Cover

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		43.8		48		46.9		43.1		38		40.6		46.4		42.1		44.3		45.6		42.3		42.1		46.8

Average Opaque Sky Cover

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		38.3		43.9		41.6		37.7		32		34.4		39.4		34.3		37.3		40.4		38.4		37.4		42.4

WIND

Average Wind Speed

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mph		8		8.4		8.7		9.3		9.2		8.4		7.7		7.4		7.1		7.3		7.4		7.5		7.9

Highest Reported Hourly Wind Speed

Years on Record: 37

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mph		52		40		38		46		43		47		44		45		47		52		39		37		39

Average Percent Chance - Calm Winds

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		7.5		7.3		6.9		5.7		5.7		5.9		6.6		7		8		8.5		9.4		10.2		8.7

Average Primary Wind Direction

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
°		186.9		207.1		210.5		220.8		256.1		230.6		246.4		254.9		192.2		111.8		88		103.1		123

Average Secondary Wind Direction

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
°		178.5		199.5		188.9		215.6		237.8		219.9		218.9		269.5		180.1		94.2		63.8		109.3		143.3

Average Wind Vector Direction

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
°		216.3		291.7		279.2		250.4		229.9		220.6		214.5		217.3		192		49.3		76.7		266.6		310.1

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		4.4		2.6		3.2		4.3		5.6		6		5.9		5.7		5.1		4.5		3.9		3		2.5

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		1		1.3		1.7		2		2.3		2.5		2.4		2.2		1.8		1.4		1		0.9

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		4.7		3.6		4.1		4.8		5.6		5.5		5.2		5.2		4.9		4.7		4.8		4.1		3.8

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		4.6		3.8		3.9		4.6		5.7		5.5		5		4.9		4.5		4.4		4.8		4.5		4

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		4.4		2.6		3.2		4.3		5.6		6		5.9		5.7		5.1		4.5		3.9		3		2.5

Maximum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.8		1.1		1.4		1.8		2.1		2.4		2.5		2.5		2.2		1.9		1.5		1.1		1

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		4.3		5.2		5.4		6.5		6		5.9		5.7		5.5		5.6		5.9		5		4.4

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		5.9		4.7		5.5		5.5		7.5		6.7		6.5		6		5.6		5.8		6.6		5.8		5

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		3.6		2		2.7		3.3		4.9		4.8		5.2		5.2		4.5		3.7		3.2		1.9		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		0.9		1.2		1.6		1.7		2.1		2.3		2.3		2.1		1.7		1.1		0.9		0.8

Minimum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		3.7		2.6		3.2		3.6		4.8		4.4		4.6		4.7		4.3		3.8		3.7		2.3		2.8

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		2.3		2.7		2.7		4.3		3.5		3.9		4.1		3.4		3		3.2		1.8		2.7

NEARBY - MAP

NEARBY - LIST

North Charleston, South Carolina (0 mi / 0 km)
Charleston - Harbor, South Carolina (9 mi / 15 km)
Lincolnville, South Carolina (10 mi / 16 km)
Mount Pleasant, South Carolina (10 mi / 16 km)
Summerville, South Carolina (10 mi / 16 km)

GEOBA.SE

Charleston, South Carolina