HARRISBURG, ILLINOIS

Average Temperature

Years on Record: 113

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		14.2		1.2		2.9		8.5		14.3		19.4		24.2		26.2		25.4		21.6		15.1		8.6		2.9

Average High Temperature

Years on Record: 113

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		20.4		6.3		8.4		14.6		20.8		26		30.7		32.8		32.2		28.8		22.4		14.6		7.9

Average Low Temperature

Years on Record: 113

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		7.9		-4		-2.6		2.4		7.7		12.8		17.6		19.5		18.6		14.4		7.8		2.6		-2.1

Highest Recorded Temperature

Years on Record: 113

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		45		25.6		26.7		34.4		35.6		37.8		41.1		45		43.9		42.8		36.7		30.6		25.6

Lowest Recorded Temperature

Years on Record: 113

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		-30.6		-30		-30.6		-22.2		-5.6		-1.7		4.4		7.2		6.1		-2.8		-7.8		-19.4		-23.9

Average Number of Days Above 90F/32C

Years on Record: 113

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		60.5		---		---		0.1		0.2		2.9		12.2		19.3		16.8		8.2		0.8		---		---

Average Number of Days Below 32F/0C

Years on Record: 113

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		92.4		23		19.3		12.3		2.8		0.1		---		---		---		0.1		3		11.4		20.4

Average Number of Days Below 0F/-17C

Years on Record: 113

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		2.2		1.2		0.6		---		---		---		---		---		---		---		---		---		0.4

Average Precipitation

Years on Record: 113

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		1119		93		74		112		108		112		100		91		90		80		80		88		91

Average Number of Days With Precipitation

Years on Record: 113

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		99		8		8		10		10		10		9		8		7		7		6		8		8

Most Reported Precipitation in a Month

Years on Record: 113

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		449		449		179		331		331		363		354		255		278		225		335		247		333

Least Reported Precipitation in a Month

Years on Record: 113

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		---		---		4		---		21		20		10		4		4		---		1		6		6

Most Precipitation Reported in a Day

Years on Record: 113

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		187.4		97.5		77.7		140.5		146.1		187.4		107.7		109.2		171.4		77.5		138.9		114.3		135.1

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

Years on Record: 113

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		72		6		6		7		7		7		6		6		5		5		5		6		6

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

Years on Record: 113

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		32		3		2		3		3		3		3		3		2		2		2		3		3

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

Years on Record: 113

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		12		1		1		1		1		1		1		1		1		1		1		1		1

Average Number of Rainy Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		99.2		8.6		7.8		10.1		10		9.9		8.6		7.7		7.2		6.8		6.4		7.6		8.6

Most Rain Reported in a Day

Years on Record: 109

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		180		90		70		140		140		180		90		100		170		70		130		110		130

Most Rain Reported in a Month

Years on Record: 109

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		1820		440		170		330		330		360		350		240		270		220		330		240		330

Least Rain Reported in a Month

Years on Record: 109

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		640		---		---		---		20		20		10		---		---		---		---		---		10

Average Snowfall

Years on Record: 113

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		35.8		10.9		10.2		5.6		0.8		---		---		---		---		---		0.5		1.5		6.3

Most Snow Reported in a Month

Years on Record: 113

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		77		77		50.8		50.8		27.9		---		---		---		---		---		23.1		21.6		40.6

Heating Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		2592.2		588.9		458.3		332.8		158.3		55		2.8		---		1.7		25		143.3		317.8		508.3

Cooling Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		766.1		---		---		0.6		10		65		157.8		231.1		200		88.9		12.8		---		---

Growing Degree Days

Years on Record: 113

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		2331.1		---		---		---		128.3		291.1		425		501.2		478.8		348.3		158.4		---		---

Average Length of Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		12.7		10.4		11.3		12.4		13.7		14.7		15.3		15		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		14.5		7.1		9.9		13.4		17.3		19.6		21.4		22		19.4		16.9		12.5		8		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		5.8		3.1		4.2		5.7		7.2		8.3		8.8		8.3		7.4		5.8		4.3		3.3		2.8

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		15.8		10.9		12.9		15.4		17.5		18		18.7		19.6		18.8		18.8		16.6		11.9		10.1

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		15.8		10.8		12.7		14.3		16.6		17.4		19.1		20.9		19		19.5		16.9		12		10

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		14.5		7.1		9.9		13.4		17.3		19.6		21.4		22		19.4		16.9		12.5		8		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		3.2		4.3		5.8		7.5		8.6		9.1		8.7		7.8		6.3		4.7		3.4		2.8

Maximum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		18.6		14.2		15.9		17.8		21.5		21.7		20.4		21.9		20.6		22.1		19.5		15.4		12.1

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		20.6		15.5		17.2		17.9		23.8		25.2		22.8		26		22.5		25.3		21.4		17.1		12.8

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		12		5.9		8		10.4		13.6		16.7		17.8		20		17		13.8		9.6		6		5.2

Minimum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		5.3		2.9		3.9		5.4		6.4		7.5		8.4		7.6		7		4.9		3.9		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		12.6		8.4		9.8		11.4		13.5		15.3		15.7		17.9		16.3		14.8		11.8		7.9		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		10.7		7.4		8.4		8.6		10.2		12.4		13.1		17.3		14.5		13		10		6.7		6.9