CLINTON, ILLINOIS

Average Temperature

Years on Record: 101

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		11.2		-3		-0.9		4.3		11		16.6		21.8		24.4		22.9		19.6		12.7		5.3		-0.9

Average High Temperature

Years on Record: 101

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		17.1		1.9		4.1		10		17.3		23.2		28.4		31.3		29.5		26.2		19.1		10.6		3.6

Average Low Temperature

Years on Record: 101

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		5.2		-7.9		-5.9		-1.4		4.7		9.9		15.1		17.6		16.3		12.9		6.3		-0.1		-5.4

Highest Recorded Temperature

Years on Record: 101

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		40.6		18.3		22.2		30		33.3		36.7		40.6		40.6		39.4		38.3		33.9		26.7		19.4

Lowest Recorded Temperature

Years on Record: 101

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		-31.7		-31.7		-26.1		-22.2		-7.8		-2.8		2.8		5.6		3.9		-4.4		-14.4		-20		-30

Average Number of Days Above 90F/32C

Years on Record: 101

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		35.3		---		---		---		0.1		1.5		7.4		13.7		8.5		4		0.1		---		---

Average Number of Days Below 32F/0C

Years on Record: 101

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		123.7		27.2		23.6		19.6		6.3		0.6		---		---		---		0.3		4.8		16.5		24.8

Average Number of Days Below 0F/-17C

Years on Record: 101

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		8.2		3.8		2.1		0.2		---		---		---		---		---		---		---		0.1		1.9

Average Precipitation

Years on Record: 101

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		993		52		45		82		104		106		111		99		93		86		83		74		61

Average Number of Days With Precipitation

Years on Record: 101

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

Most Reported Precipitation in a Month

Years on Record: 101

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		431		188		146		219		259		431		253		353		247		277		298		206		207

Least Reported Precipitation in a Month

Years on Record: 101

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		---		---		5		7		18		7		1		12		5		4		3		2		5

Most Precipitation Reported in a Day

Years on Record: 101

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		361.9		80.3		71.1		114.3		134.1		361.9		158.8		142.2		108		89.9		100.1		96.5		93.7

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		74.7		5		4.4		6.4		8		7.9		7.4		6.7		5.7		4.6		6.1		6.8		5.7

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

Years on Record: 101

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		74		5		4		7		8		8		7		6		6		6		6		6		5

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

Years on Record: 101

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		25		1		1		2		3		3		3		3		2		2		2		2		1

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		27.6		1.1		1.2		2.1		2.7		3		3		3.2		2.5		1.9		2.4		2.6		1.9

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

Years on Record: 101

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		9		---		---		1		1		1		1		1		1		1		1		1		---

Average Snowfall

Years on Record: 101

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		41.4		11.2		9.9		7.6		0.8		---		---		---		---		---		0.2		3		8.6

Most Snow Reported in a Month

Years on Record: 101

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		58.4		47.5		52.1		58.4		15.2		7.6		---		---		---		---		7.6		22.9		51.8

Heating Degree Days

Years on Record: 101

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		1998.3		489.4		386.7		270.6		96.1		20		0.6		---		---		6.1		72.8		232.2		423.9

Cooling Degree Days

Years on Record: 101

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		596.7		---		---		0.6		5		40		120.6		191.7		146.7		80.6		11.7		---		---

Growing Degree Days

Years on Record: 101

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		1805		---		---		---		30		203.2		353.3		447.8		399.6		286.7		84.4		---		---

Average Length of Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		12.7		10.2		11.2		12.5		13.8		15		15.5		15.2		14.2		12.9		11.6		10.4		9.9

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		6.8		9.4		12.9		16.6		19.5		21.6		22.1		19		16.2		11.6		7.2		5.7

Average Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		5.6		2.8		3.9		5.5		7.1		8.2		8.7		8.1		7.3		5.6		4.2		3.1		2.5

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		15.5		11.4		12.9		15.2		16.8		17.9		18.8		19.7		18.6		18.3		15.7		11		9.8

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		15.6		11.4		12.7		14.2		15.8		17.6		19.7		21.5		18.9		19		15.9		11		9.8

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		6.8		9.4		12.9		16.6		19.5		21.6		22.1		19		16.2		11.6		7.2		5.7

Maximum 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		2.9		4		5.6		7.3		8.6		9.1		8.8		7.6		6.2		4.5		3.2		2.6

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		14.1		16.7		19.1		19.7		22.7		21.5		21.9		20.1		22.3		18.4		16.7		12.5

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		21.2		14.8		17.8		20.3		20.8		27.7		26		26.5		21.9		26		19.9		19		13.4

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		11.3		5.5		7.6		9.6		13.5		15.8		19		16.9		17.2		12.7		8.8		4.2		4.6

Minimum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		5.1		2.7		3.6		4.9		6.6		7		8		7.5		7		4.6		3.8		2.6		2.4

Minimum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		11.8		8.2		9.9		10.6		13.4		14.5		16.7		15.1		16.7		13.7		11		5.4		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		7.5		8.4		7.8		10.3		11.3		15.3		12.5		15.5		11.7		9.3		3.8		6.2