ST.-LOUIS, SENEGAL

Average Temperature

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		79		73		75		77		76		76		80		82		83		84		84		80		75

Average High Temperature

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		87		83		86		87		85		84		85		86		88		89		91		90		86

Average Low Temperature

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		70		63		64		66		66		68		74		77		78		79		76		69		64

Highest Recorded Temperature

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		113		101		106		109		113		111		112		101		102		107		109		106		104

Lowest Recorded Temperature

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		45		45		45		57		50		54		64		66		69		65		50		47		52

Average Number of Days Above 95F/35C

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		45		1		4		8		5		3		2		1		---		2		8		8		3

Average Number of Days Above 86F/30C

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		229		13		16		17		13		11		13		21		28		28		28		24		16

Average Number of Days Below 75F/23C

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		266		31		28		30		30		30		23		9		4		6		15		29		31

Average Number of Days Below 65F/18C

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		105		24		20		17		14		7		---		---		---		---		---		5		19

Average Precipitation

Years on Record: 143

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in.		14.9		0.1		0.1		---		---		0.1		0.6		2.3		6.1		4.6		0.9		0.1		0.1

Average Number of Days With Thunderstorms

Years on Record: 16

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		30		---		1		---		---		---		1		5		11		10		2		---		---

Most Rain Reported in a Month

Years on Record: 143

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in.		37.1		1.8		3.4		1		0.1		1.7		5.7		9		18.8		17.8		9		4.8		2.6

Least Recorded Rainfall

Years on Record: 143

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in.		3.9		---		---		---		---		---		---		---		0.2		0.2		---		---		---

Average Morning Relative Humidity

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		79		58		67		74		83		84		88		89		90		90		86		71		61

Average Evening Relative Humidity

Years on Record: 16

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		50		30		32		39		47		55		64		68		70		67		54		37		29

Average Dew Point

Years on Record: 17

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		62		47		50		55		59		63		70		74		76		76		70		59		50

Cooling Degree Days

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		4936		248		282.5		356.5		315		341		435		511.5		558		570		573.5		435		310

Growing Degree Days

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		10414.8		713		706.3		821.5		765		806		885		976.5		1023		1020		1038.5		885		775

Average Length of Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		12.5		11.7		12		12.4		12.9		13.3		13.5		13.4		13		12.6		12.1		11.8		11.6

Average Number of Days With Fog

Years on Record: 16

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		10		---		1		1		2		1		1		---		---		1		1		1		1

Average Wind Speed

Years on Record: 17

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mph		11		9		10		11		13		12		11		12		11		10		10		9		8

Average Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		5.7		4.4		5.2		6.2		6.9		6.9		6.8		6.6		6.1		5.8		5.3		4.5		4

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		1.5		1.6		1.8		1.8		1.9		2		2		2.1		2		1.7		1.5		1.5

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		5.9		4.9		5.7		6.4		6.7		6.8		6.9		6.6		5.8		5.8		5.7		5.1		4.6

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		6		5		5.8		6.6		7.3		7.2		7		6.6		5.7		5.5		5.6		5.1		4.6

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		5.7		4.4		5.2		6.2		6.9		6.9		6.8		6.6		6.1		5.8		5.3		4.5		4

Maximum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		2		1.6		1.9		2		2		2.1		2.1		2.2		2.3		2.2		1.9		1.6		1.5

Maximum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		6.5		5.8		6.5		6.8		7.1		7.4		7.6		7.1		6.7		6.4		6.2		5.4		5.1

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		7.1		6.5		7.4		7.4		8.3		8.4		8.2		7.5		7.5		6.7		6.7		5.8		5.4

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		5.1		3.8		4.1		5.5		6.5		6.5		6.4		6.1		5.4		5		4.6		4.1		3.7

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		1.3		1.4		1.6		1.6		1.7		1.7		1.9		1.8		1.8		1.5		1.5		1.4

Minimum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		5.2		4.2		4.4		5.6		6.2		6.4		6.5		6		5.2		5		4.8		4.5		4.2

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		4.8		3.8		3.6		5.2		6.4		6.3		6.1		5.6		4.5		4.2		4.2		4.2		3.9