ST. CHARLES COUNTY SMARTT AIRPORT, MISSOURI

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Elevation: 133 meters Latitude: 38 56N Longitude: 090 26W

WEATHER

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CURRENT CONDITIONS

Sunrise/Set

07:00 am

08:56 pm
Local Time
6:23 pm EDT
3 May, 2024

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MONTHLY - ALL WEATHER AVERAGES [ Show Summary ]

[ °F ] °C

TEMPERATURE

Average Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		13		-0.9		1.6		7.2		13.3		18.7		23.4		25.7		24.8		20		13.6		7.3		0.7

Average High Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		18.8		4		6.6		12.9		19.6		24.6		29.3		31.4		30.9		26.7		20.2		12.7		5.4

Average Low Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		7.2		-5.9		-3.3		1.4		7.1		12.8		17.5		19.9		18.7		13.3		6.9		1.8		-4.1

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		1.3		---		---		---		---		---		---		0.7		0.6		---		---		---		---

Average Number of Days Above 90F/32C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		36.3		---		---		---		0.2		0.9		7.9		13.2		10.8		3		0.2		---		---

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		115		---		---		0.5		4.1		10.8		23.2		28.2		27.8		15.3		4.8		0.2		---

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		176.8		0.2		0.5		4.3		12.5		23.8		29.1		30.9		30.8		26.9		13.5		3.8		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		225.8		1.9		2.7		11		21.6		30.3		30		31		31		29.8		24.3		10.5		1.9

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		270.4		5.9		7.5		20		27.8		31		30		31		31		30		30.3		18.4		7.5

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		316.2		14		16.6		28		29.8		31		30		31		31		30		31		26.8		17

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		338.2		31		28		31		29.9		30.6		25.7		18.1		22.6		29.4		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		267.3		31		28		30.8		28.8		22.1		8.9		2.1		5.4		19.7		29.5		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		207.4		30.8		27.8		28.8		21.8		8.3		0.5		---		0.2		7.2		22.5		28.6		30.7

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		152.2		29.9		26.5		23.8		9.6		0.6		---		---		---		0.9		10.1		21.3		29.3

Average Number of Days Below 32F/0C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		98		25.8		21.1		12		2.2		0.1		---		---		---		---		2.5		10.5		23.8

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		30.5		13		6.2		1.1		---		---		---		---		---		---		---		0.9		9.2

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		9.1		4.8		1.5		0.1		---		---		---		---		---		---		---		---		2.7

Average Number of Days Below 0F/-17C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		1.3		1.1		---		---		---		---		---		---		---		---		---		---		0.2

PRECIPITATION

Average Precipitation

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		1051.6		61		55.9		81.3		96.5		121.9		109.2		111.8		81.3		83.8		86.4		96.5		71.1

DEGREE DAYS

Heating Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		4850		1076		841		624		294		84		7		---		2		50		290		598		986

Cooling Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		1345		---		---		2		22		104		280		409		361		141		25		1		---

Growing Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		4044		3		8		64		222		486		723		874		824		543		234		57		7

SKY CONDITIONS

Average Length of Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		12.7		10.3		11.2		12.5		13.7		14.8		15.4		15.1		14.1		12.8		11.6		10.5		10

SOLAR RADIATION

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		9.4		13.2		17		19.6		21.5		22.2		19.5		16.7		12.1		7.6		6.2

Average Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		5.7		3		4		5.5		7.1		8.3		8.8		8.2		7.3		5.7		4.3		3.2		2.7

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		15.7		11.2		12.5		15.3		17.2		18		18.8		19.8		18.9		18.8		16.2		11.5		10.3

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		11.1		12.2		14.3		16.2		17.5		19.4		21.6		19.5		19.6		16.5		11.6		10.4

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		9.4		13.2		17		19.6		21.5		22.2		19.5		16.7		12.1		7.6		6.2

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		3		4.2		5.7		7.4		8.6		9.1		8.8		7.7		6.3		4.6		3.3		2.7

Maximum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		18.7		14.4		15.6		18.5		20.7		21.4		20.9		21.7		20.6		22.8		18.7		16.3		12.7

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		20.9		15.8		16.3		19.2		22.4		24.7		24.2		26		22.7		26.6		20.1		18.5		13.8

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		11.4		5.7		6.8		9.1		14		15.8		18.9		18.2		16.8		13.1		9.1		4.6		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		5.2		2.7		3.8		5.2		6.5		7.5		8.2		7.6		6.9		4.6		4		2.8		2.5

Minimum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		11.9		8.6		8.2		9.8		13.9		14.5		16.7		16.3		16.2		14		11.3		5.9		8

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		6.4		6.8		10.9		11.2		15		14.5		14.5		12.1		9.6		4.3		7.3

NEARBY - MAP

NEARBY - LIST

Grafton, Illinois (2 mi / 4 km)
Dow, Illinois (11 mi / 19 km)
Earth City, Missouri (11 mi / 19 km)
Berkeley, Missouri (12 mi / 20 km)
Hazelwood, Missouri (12 mi / 20 km)

GEOBA.SE

St. Charles County Smartt Airport, Missouri