PORT ARTHUR, TEXAS

Average Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		69		52.7		55.9		62		68.6		75.9		81.2		83		83.1		79		70.6		61.7		54.3

Average High Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		78.4		62.1		65.3		71.8		78.1		84.8		89.6		91.7		92.2		88.2		80.6		71.7		63.7

Average Low Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		59.7		43.2		46.5		52.2		59		67		72.7		74.2		74		69.7		60.5		51.8		44.8

Highest Recorded Temperature

Years on Record: 59

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		108		82		85		89		94		98		104		103		108		105		95		88		84

Lowest Recorded Temperature

Years on Record: 59

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		12		14		20		23		32		45		56		61		60		45		30		22		12

Average Heat Index Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		70.1		52.4		55.8		61.8		68.6		76.9		84.3		87		86.5		80.5		70.4		61.6		54.3

Average Wind Chill Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		68		50.2		54.3		61.2		68.3		75.5		80.5		82		81.8		78		69.7		60.9		52.4

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		---		---		---		---		---		0.1		0.1		0.4		0.2		---		---		---

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		77.9		---		---		---		0.2		2.4		15		23.5		23.9		12.1		0.8		---		---

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		185.7		0.2		0.4		3.1		12		26.9		29.5		30.8		30.7		28		18.6		4.9		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		274.7		7.6		9.9		20.2		27.4		31		30		31		31		29.9		28.7		18.5		9.6

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		328.5		18.6		20.6		28.7		29.7		31		30		31		31		30		30.7		26.8		20.4

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		355		26.9		26		30.7		30		31		30		31		31		30		31		29.7		27.7

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		363.8		30.5		27.7		31		30		31		30		31		31		30		31		30		30.5

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		242.4		31		28		30.9		27.5		19.9		5.1		0.7		1.7		11.9		25.8		29.2		30.7

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		165.7		29		25.1		23.9		15.5		4.2		0.2		---		---		2.3		14.6		23.1		27.7

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		98.2		23.3		18.3		12.6		4.5		0.3		---		---		---		0.1		4		13.4		21.8

Average Number of Days Below 45F/7C

Years on Record: 48

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		74		20		15		9		2		---		---		---		---		---		2		11		17

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		38.7		13		7		3.1		0.4		---		---		---		---		---		0.2		4.1		10.9

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		9.1		3.6		1.4		0.5		---		---		---		---		---		---		---		0.4		3.1

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		0.2		0.1		---		---		---		---		---		---		---		---		---		---		0.1

Average Precipitation

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in.		60.5		5.3		3.6		3.5		3.2		5.2		7.1		6		5.4		6		5.6		4.4		5.3

Average Number of Days With Precipitation

Years on Record: 36

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		97		10		8		7		5		6		10		10		10		8		7		7		9

Most Reported Precipitation in a Month

Years on Record: 36

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		26.9		12.1		8.6		8.8		9.2		13.1		19.5		26.9		20.2		15.6		19.9		9.8		13.7

Least Reported Precipitation in a Month

Years on Record: 36

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		---		0.5		0.2		0.4		0.2		---		0.4		0.9		0.8		0.6		---		0.3		0.9

Most Precipitation Reported in a Day

Years on Record: 36

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		13.4		4.5		4.3		5.7		4		7		6.5		12		8		13.4		6		5.7		7.2

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		71.1		6.7		5.2		4.9		4		4.7		7.5		7.5		6.9		6.9		5.2		5.6		6

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

Years on Record: 36

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		68		6		5		5		3		5		7		8		7		6		5		5		6

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

Years on Record: 36

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		36		3		2		2		2		3		4		4		3		4		3		3		3

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		35.8		3.4		2.3		2.4		1.7		2.8		4		4.1		3.1		3.3		2.9		2.8		3

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

Years on Record: 36

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		18		2		1		1		1		2		2		2		1		2		2		1		1

Average Precipitable Water

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in.		1.2		0.7		0.8		0.8		1		1.3		1.6		1.8		1.8		1.6		1.2		0.9		0.8

Average Number of Rainy Days

Years on Record: 40

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		105		10		9		8		7		8		8		11		12		10		6		8		9

Average Number of Days With Thunderstorms

Years on Record: 48

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		69		3		3		4		4		6		8		14		12		7		3		3		2

Most Rain Reported in a Month

Years on Record: 48

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in.		81.5		14.9		13.1		10.2		8.7		13.2		18.9		18.7		17.3		22		15.1		10.8		18

Least Recorded Rainfall

Years on Record: 48

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in.		33.1		0.6		0.2		0.1		0.3		0.1		0.8		0.6		1		0.5		---		0.1		1.3

Average Number of Days With Snow

Years on Record: 30

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

Average Relative Humidity

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		77.7		77.3		76.7		76.3		76.5		78.1		79.1		80.1		79.4		77		77.1		77.7		77

Average Morning Relative Humidity

Years on Record: 48

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		91		88		88		88		90		92		93		94		94		92		91		89		89

Average Evening Relative Humidity

Years on Record: 48

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		61		64		61		59		61		62		62		64		62		60		55		59		64

Average Dew Point

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		60.5		44.3		47.7		53		59.6		67.6		73		74.6		74.2		69.6		61.3		53.7		46.5

Heating Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		1402		393		270		148		39		1		---		---		---		1		33		161		355

Cooling Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		2878		11		15		55		146		339		484		556		561		419		205		64		22

Growing Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		7150		159		201		381		557		803		934		1021		1026		868		638		363		198

Average Sea Level Pressure

Years on Record: 30

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

Average Length of Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		12.6		10.9		11.6		12.4		13.3		14.1		14.5		14.3		13.6		12.7		11.8		11.1		10.7

Average Number of Days With Fog

Years on Record: 48

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		171		18		16		17		15		14		10		8		11		14		16		15		17

Average Number of Clear Days

Years on Record: 40

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		96		7		7		7		6		7		8		7		7		9		12		10		8

Average Possibility of Sunshine

Years on Record: 26

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		58		42		52		52		52		64		69		65		63		62		67		57		47

Average Number of Cloudy Days

Years on Record: 40

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		152		18		15		17		16		12		8		9		9		10		9		13		17

Average Number of Partly Cloudy Days

Years on Record: 40

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		117		6		6		7		8		12		14		15		15		11		10		7		6

Average Percent Chance - Clear Skies

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		36.5		33		31.3		33.6		33.3		30.8		32.3		39.2		40.9		45.1		45.9		39.1		32.9

Average Percent Chance - Scattered Clouds

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		8.3		3.7		4		5.1		7.2		11.7		14.8		13.7		12.4		10.1		6.8		5.5		3.9

Average Percent Chance - Few Clouds

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		11.6		5.5		6		7.1		8.5		13.7		19.9		19.8		19		15		10.8		7.8		5.6

Average Percent Chance - Broken Clouds

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		14.9		10.5		10.9		13.8		16.5		19.7		18.9		16.1		17.1		15.5		14.2		14		11.6

Average Percent Chance - Overcast Skies

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		28.8		47.2		47.8		40.5		34.5		24.1		14.1		11.3		10.6		14.4		22.2		33.6		46

Average Total Sky Cover

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		48.6		60		61.2		56.9		54.6		50.2		42.6		36.9		35.7		36.1		39.7		50.4		58.1

Average Opaque Sky Cover

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		43.7		57.3		57.3		53.2		50.9		45		36.7		29		28		30.5		35.7		46.4		55.2

Average Wind Speed

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mph		8.7		9.7		10.2		10.4		10.4		9.3		7.8		6.5		6.1		7.4		8.3		8.9		9.6

Highest Reported Hourly Wind Speed

Years on Record: 33

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mph		81		41		39		43		46		52		55		44		47		81		37		38		41

Average Percent Chance - Calm Winds

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		6.8		4.5		3.3		3.8		4		5		8.3		11.7		12.7		9		7.5		7		5

Average Primary Wind Direction

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
°		164		76.1		129.4		187.1		221.7		224.8		223.3		232.7		191		123.1		134.3		143.9		79.1

Average Secondary Wind Direction

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
°		159.5		135.4		133.9		197.4		173.8		169.7		183.9		235.9		198.6		115.3		109.5		129.2		127.6

Average Wind Vector Direction

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
°		115.3		57.6		90.5		126.7		143		150.7		160.2		199.4		152.6		75.1		78.1		84.4		63.2

Average Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		4.4		2.6		3.2		4.2		5.2		5.6		5.7		5.8		5.5		4.8		4		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		1.8		1.1		1.4		1.8		2.1		2.4		2.5		2.4		2.2		1.9		1.4		1.2		1

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		4.6		3.4		3.9		4.5		5.1		5.2		5.1		5.2		5.3		5		4.8		3.9		3.4

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		4.3		3.3		3.4		4		4.8		4.8		4.8		4.9		5		4.7		4.8		3.9		3.5

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		4.2		5.2		5.6		5.7		5.8		5.5		4.8		4		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		1.9		1.2		1.5		1.8		2.2		2.4		2.5		2.5		2.3		1.9		1.6		1.2		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		5.6		4		4.9		5.9		6.5		6		5.7		5.9		6		5.9		6.2		5.4		4.5

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		6.1		4.2		5		6.3		7.4		6.4		5.9		6.4		6.5		6.2		6.9		6.4		5.1

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		3.5		2.2		2.4		3.4		4.1		4.6		4.8		5.2		4.9		4.2		2.8		1.9		2

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		1.1		1.3		1.5		1.7		2.2		2.4		2.2		2		1.7		1.2		0.9		0.9

Minimum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		3.6		2.7		2.8		3.5		4		4.2		4.3		4.7		4.7		4.3		3.1		2.2		2.5

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		2.8		2.3		2		2.6		2.9		3.1		3.2		3.9		3.9		3.6		2.3		1.6		2.2