HUMBOLDT, IOWA

Average Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		47.5		17.7		22.9		35.1		48.7		60.8		70.1		73.1		70.3		63		50.5		35.3		21.2

Average High Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		57.7		26.4		31.6		44.4		60.2		72.5		80.9		83.6		80.8		74.8		62		44.4		29.2

Average Low Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		37.3		9		14.3		25.8		37.3		49.1		59.3		62.7		59.8		51.2		39.1		26.2		13.2

Highest Recorded Temperature

Years on Record: 101

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		108		63		69		87		96		98		104		108		100		100		95		79		65

Lowest Recorded Temperature

Years on Record: 101

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		-42		-42		-32		-22		6		20		34		41		37		21		14		-14		-26

Average Number of Days Above 100F/38C

Years on Record: 30

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

Average Number of Days Above 90F/32C

Years on Record: 105

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		23.7		---		---		---		0.2		1.3		5.1		9		5.9		2.2		0.1		---		---

Average Number of Days Above 80F/26C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		76.7		---		---		0.2		2.1		7.9		17.4		21.8		16.4		9.4		1.5		---		---

Average Number of Days Above 70F/21C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		142.2		---		---		0.8		6.7		19.2		27.4		30.5		29.6		20.8		6.8		0.4		---

Average Number of Days Above 60F/15C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		187.4		0.1		0.4		4		14.4		27		29.8		31		30.9		28.1		17.9		3.6		0.1

Average Number of Days Above 50F/10C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		227.9		0.9		1.8		10.3		23.8		31		30		31		31		29.8		26.8		10.6		0.9

Average Number of Days Above 40F/4C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		265		4.4		7.4		18.6		28.4		31		30		31		31		30		30.4		18.1		4.8

Average Number of Days Below 70F/21C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		358.1		31		28		31		30		31		28.4		27.9		28.9		29.8		31		30		31

Average Number of Days Below 60F/15C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		305		31		28		31		29.8		28		15.7		10.1		15.2		24.6		30.7		30		31

Average Number of Days Below 50F/10C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		242.2		31		28		30.7		27.5		16.9		3.2		0.3		3.3		13.6		27.2		29.6		31

Average Number of Days Below 40F/4C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		191		31		28		29.1		18.9		4.4		0.1		---		0.1		3.8		17.2		27.4		30.9

Average Number of Days Below 32F/0C

Years on Record: 105

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		158		30.5		27.4		25.1		11.2		1.5		---		---		---		0.8		8.6		22.9		30

Average Number of Days Below 20F/-6C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		76.5		23.8		16.1		7.7		1		---		---		---		---		---		0.5		7.8		19.6

Average Number of Days Below 10F/-12C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		42.5		16		10.1		2.8		0.1		---		---		---		---		---		---		2.8		10.8

Average Number of Days Below 0F/-17C

Years on Record: 105

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		25		10.4		7		1		---		---		---		---		---		---		---		0.7		6

Average Precipitation

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		33.4		0.9		1		2		4		4.5		4.8		4.2		4		3.2		2.2		1.7		1.3

Average Number of Days With Precipitation

Years on Record: 105

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		81		4		4		6		8		10		9		8		8		8		6		5		5

Most Reported Precipitation in a Month

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		10.2		2.6		2.8		4.6		7.3		9.3		10.2		8.5		9.6		9.7		5.4		4.3		3.5

Least Reported Precipitation in a Month

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		---		---		0.1		---		0.7		1.6		1.1		0.7		0.5		0.9		0.1		---		0.2

Most Precipitation Reported in a Day

Years on Record: 105

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		8.2		1.6		1.4		3.4		2.7		3.4		7.7		8.2		5.2		4.1		2.3		3.4		1.7

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		62.5		2.5		2.3		5		6.5		8.1		7.2		6.7		6.1		6		4.2		4.4		3.5

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

Years on Record: 105

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		57		2		3		4		6		7		7		6		6		6		4		3		3

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

Years on Record: 105

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		19		---		---		1		2		3		3		3		2		2		1		1		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		22.6		0.4		0.3		1.2		2		3.1		3.6		3.3		2.8		2.4		1.4		1.2		0.9

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

Years on Record: 105

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		5		---		---		---		---		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		82.5		4.3		4.1		5.9		8.3		10.3		9.4		8.4		8.2		8		6.1		5		4.7

Most Rain Reported in a Day

Years on Record: 101

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		8.2		1.6		1.4		3.4		2.6		3.4		7.7		8.2		5.2		4.2		2.3		3.4		1.7

Most Rain Reported in a Month

Years on Record: 101

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		48.3		2.8		3.7		4.6		7.3		9.7		10.8		11.7		9.6		13.3		5.7		11.5		3.6

Least Rain Reported in a Month

Years on Record: 101

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		19.2		---		---		---		0.4		0.9		0.1		0.2		0.5		0.7		0.1		---		---

Average Snowfall

Years on Record: 105

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		31.4		7.1		6.4		6.2		1.7		---		---		---		---		---		0.4		3.2		6.4

Most Snow Reported in a Month

Years on Record: 105

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		26.5		26.5		22.5		23		8		0.6		---		---		---		---		9		19		19.5

Heating Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		7140		1466		1177		927		497		180		27		4		22		138		453		891		1358

Cooling Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		765		---		---		---		9		49		180		257		186		78		5		---		---

Growing Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		2940		---		---		12		102		346		603		717		629		399		121		11		---

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		11.1		12.5		13.9		15.2		15.9		15.5		14.3		12.9		11.5		10.2		9.6

Average Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		3.8		1.8		2.6		3.5		4.5		5.4		6		6		5.2		4.1		2.9		1.8		1.5

Average Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.5		0.7		1		1.4		1.9		2.3		2.4		2.3		2		1.5		1.1		0.8		0.6

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		4.3		3.3		4		4.3		4.6		4.9		5.2		5.4		5.2		4.8		4.2		3.1		2.9

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		4.4		3.4		4		4.1		4.5		5		5.7		5.9		5.4		4.9		4.3		3.1		2.9

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		3.8		1.8		2.6		3.5		4.5		5.4		6		6		5.2		4.1		2.9		1.8		1.5

Maximum 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		0.7		1		1.5		2		2.4		2.5		2.4		2.1		1.6		1.2		0.8		0.6

Maximum 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		4.1		4.8		5.5		5.8		5.8		6.2		5.9		5.9		5.8		5.3		4.1		3.7

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		6		4.3		5.2		5.9		6.6		6.7		7.9		7.2		6.8		6.6		5.8		4.5		3.9

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		3		1.6		2		2.5		3.6		4.1		5		4.7		4.5		3.3		2.1		1.4		1.1

Minimum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.3		0.6		0.9		1.3		1.7		2.1		2.1		2.1		1.8		1.3		0.9		0.7		0.6

Minimum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		3.3		2.8		2.8		2.9		3.6		3.8		4.4		4.2		4.4		3.6		2.7		2.2		1.8

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		2.8		2.7		2.5		2.2		2.8		2.9		3.9		3.6		4		3.1		2.2		1.9		1.6