MAMMOTH CAVE, KENTUCKY

Average Temperature

Years on Record: 76

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		13.6		1.4		3.4		8.4		14.1		18.5		22.6		24.5		24		20.5		14.5		8.2		3.3

Average High Temperature

Years on Record: 76

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		20.2		6.8		9.6		15.2		21.3		25.6		29.4		31.2		30.7		27.6		21.8		14.2		8.7

Average Low Temperature

Years on Record: 76

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		7.1		-4.1		-2.6		1.8		7		11.4		15.8		17.8		17.3		13.5		7.2		2.1		-2.2

Highest Recorded Temperature

Years on Record: 76

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		42.2		26.7		27.8		30		33.9		35.6		40.6		42.2		40.6		41.1		34.4		28.9		26.7

Lowest Recorded Temperature

Years on Record: 76

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		-29.4		-28.9		-29.4		-21.1		-7.8		-2.8		---		4.4		2.8		-1.7		-7.8		-22.2		-27.8

Average Number of Days Above 90F/32C

Years on Record: 76

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		35.9		---		---		---		0.1		0.8		6.9		12.2		11.4		4.3		0.2		---		---

Average Number of Days Below 32F/0C

Years on Record: 76

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		97.8		22.7		19.1		13.8		4.5		0.6		---		---		---		0.1		4.1		12.8		20.2

Average Number of Days Below 0F/-17C

Years on Record: 76

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		2.6		1.5		0.6		0.1		---		---		---		---		---		---		---		---		0.4

Average Precipitation

Years on Record: 76

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		1331		123		105		133		110		122		118		118		100		98		79		107		119

Average Number of Days With Precipitation

Years on Record: 76

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		118		11		10		12		11		11		9		10		9		8		8		10		10

Most Precipitation Reported in a Day

Years on Record: 76

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm.		172.7		88.7		98		97.8		90.2		172.7		84.8		124		100.8		111.8		81.5		169.2		101.6

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

Years on Record: 76

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		83		8		7		8		8		8		7		7		6		5		5		7		7

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

Years on Record: 76

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

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

Years on Record: 76

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		15		1		1		1		1		1		1		1		1		1		1		1		2

Average Number of Rainy Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		117.2		11		9.9		12.1		11.3		10.5		9.2		9.7		8.7		7.6		7.9		9.9		10.4

Most Rain Reported in a Day

Years on Record: 62

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		170		70		90		90		90		170		80		120		100		110		80		160		100

Most Rain Reported in a Month

Years on Record: 76

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		1827		534		307		322		248		358		231		259		236		233		239		333		311

Least Rain Reported in a Month

Years on Record: 76

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		809		18		3		36		14		34		16		21		16		2		---		23		19

Average Snowfall

Years on Record: 76

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm.		31.2		10.7		8.1		5.8		0.2		---		---		---		---		---		---		1.8		4.3

Most Snow Reported in a Month

Years on Record: 76

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm.		117.1		57.1		47.8		59.7		7.6		---		---		---		---		---		---		38.1		29.2

Heating Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		2362.8		541.1		426.1		293.9		138.9		49.4		5.6		0.6		1.1		25.6		136.1		283.9		460.6

Cooling Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		669.4		---		---		3.9		19.4		50		127.8		188.3		171.7		90		16.7		1.7		---

Growing Degree Days

Years on Record: 76

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		2103.1		---		---		---		123.3		263.5		378.3		449.5		434		315		139.5		---		---

Average Length of Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		12.6		10.4		11.3		12.4		13.6		14.7		15.2		14.9		14		12.8		11.6		10.6		10.1

Average Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		14.3		7.1		9.9		13.2		17.5		19.1		21.1		20.9		18.9		16.7		12.7		8.3		6.3

Average Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		5.9		3.2		4.3		5.8		7.2		8.4		8.8		8.5		7.6		5.9		4.5		3.4		2.9

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		15.4		10.5		12.5		15.1		17.6		17.5		18.5		18.6		18.3		18.4		16.6		12.1		9.7

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		15.1		10.2		12.1		13.6		16.6		16.3		18.5		18.7		17.8		18.6		16.8		12.2		9.4

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		14.3		7.1		9.9		13.2		17.5		19.1		21.1		20.9		18.9		16.7		12.7		8.3		6.3

Maximum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		6.1		3.3		4.4		5.9		7.5		8.7		9.1		8.8		7.8		6.3		4.9		3.6		3

Maximum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		18.8		12.8		15.5		19.4		20.9		20.9		21.9		20.8		20.4		21.6		20.6		16.8		13.9

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		20.7		13.5		16.4		20.3		22.4		23.1		26.1		23.4		21.9		24.2		23		19		15.4

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		11.8		5.9		7.5		10.9		14		15.8		17		19		16.8		14.7		9.4		5.8		5.4

Minimum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		5.4		3.1		4.1		5.3		6.6		7.8		7.8		8		7.1		5.2		3.7		3		2.7

Minimum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		12.3		8		8.8		11.9		13.9		14.5		15.1		17		16.2		15.9		11.3		7.5		7.7

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		10.2		6.9		7		9.1		10.6		10.9		11.8		15.4		14.1		14.5		9.4		5.9		6.8