UDON THANI, THAILAND

Average Temperature

Years on Record: 21

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		27		23		25		28		30		29		29		28		28		28		27		25		22

Average High Temperature

Years on Record: 21

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		31		28		31		34		35		33		32		31		31		31		30		29		28

Average Low Temperature

Years on Record: 21

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		22		17		19		22		25		25		26		25		25		25		23		20		16

Highest Recorded Temperature

Years on Record: 21

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		41		35		37		40		41		40		38		39		37		37		37		37		37

Lowest Recorded Temperature

Years on Record: 21

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		5		5		7		11		17		18		22		20		22		22		16		8		6

Average Number of Days Above 95F/35C

Years on Record: 21

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		58		---		5		17		19		10		4		2		1		---		---		---		---

Average Number of Days Above 86F/30C

Years on Record: 21

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		279		15		21		27		29		29		27		27		25		24		25		18		11

Average Number of Days Below 75F/23C

Years on Record: 21

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		199		31		28		23		10		6		3		5		6		9		19		29		31

Average Number of Days Below 65F/18C

Years on Record: 21

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		64		21		10		2		---		---		---		---		---		---		---		8		23

Average Precipitation

Years on Record: 79

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		1380		---		10		40		80		210		210		200		250		240		80		10		---

Average Number of Days With Thunderstorms

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		67		---		1		3		6		14		11		10		11		8		3		---		---

Most Rain Reported in a Month

Years on Record: 79

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		2410		90		140		180		290		410		650		440		520		640		360		110		100

Least Recorded Rainfall

Years on Record: 79

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		930		---		---		---		---		60		70		60		50		80		---		---		---

Average Morning Relative Humidity

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		85		85		81		77		78		86		87		88		90		91		89		86		85

Average Evening Relative Humidity

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		52		41		39		38		43		59		63		65		68		66		58		47		41

Average Dew Point

Years on Record: 19

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		20		15		16		17		20		23		23		23		23		23		21		17		13

Cooling Degree Days

Years on Record: 21

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		3284.1		146.4		204.1		318.6		358.3		344.4		325		318.6		301.4		291.7		266.9		191.7		120.6

Growing Degree Days

Years on Record: 21

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		6526.1		404.7		439.4		576.9		600		602.8		575		576.9		559.7		541.7		525.3		441.7		378.9

Average Length of Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		12.5		11.6		12		12.4		12.9		13.3		13.6		13.4		13.1		12.6		12.1		11.7		11.5

Average Number of Days With Fog

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		224		30		27		28		24		14		5		3		4		10		22		27		30

Average Wind Speed

Years on Record: 19

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
km/h		6		8		8		8		6		6		4		6		8		6		6		8		8

Average Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		17.9		17.5		19.3		20.3		21.1		18.8		16.4		15.8		15.8		16.8		17.9		17.6		17

Average Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		6.8		4.6		5.5		6.8		7.8		8.6		8.6		8.6		8.4		7.7		6.4		4.9		4.3

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		18.7		20.5		21.2		20.9		20.4		18.2		16.4		15.7		15		16.7		19.1		20.2		20.2

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		17.4		22.9		22.4		20.3		19.1		14.7		11.3		10.4		10.4		13.2		18.1		21.9		23.2

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		17.9		17.5		19.3		20.3		21.1		18.8		16.4		15.8		15.8		16.8		17.9		17.6		17

Maximum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		7.2		5.1		6.2		7.6		8.2		8.8		8.7		8.6		8.5		7.8		6.8		5.8		4.9

Maximum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		20.9		22.2		23.3		23.3		22.1		20.3		18.4		18.6		18.1		19.2		21.9		21.7		21.7

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		21		26.2		26.1		24.6		22.2		18		14		14.5		15.2		17.2		23.1		24.6		25.9

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		15.3		16.3		17		16.8		19		15.7		13		12.6		13.5		13.9		16.1		14.7		15.5

Minimum 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		4.1		4.8		6.1		7.3		8.3		8.2		8.1		8.2		7.5		5.6		4.5		3.8

Minimum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		15.9		18.8		18.4		17.1		18.4		15.2		12.9		12.4		12.9		13.8		17		16.4		18.1

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		13		19.9		17.5		13.9		15.4		10		6.9		6.3		7.5		8.9		14.7		15.5		19.4