DUNNVILLE, ONTARIO

Average Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		46.2		23.4		23.7		32		42.3		53.4		62.6		68.7		68.2		61.2		50		40.3		29.8

Average High Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		53.6		29.7		30.6		39.2		50.2		61.7		70.2		76.3		75.7		68.7		57.4		46.8		36

Average Low Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		39		17.1		17.1		24.8		34.3		45		54.9		61.2		60.6		53.6		42.4		34		23.7

Highest Recorded Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		91.4		51.1		59		73.4		83.3		85.1		89.6		91.4		89.1		84.9		75.9		67.1		61

Lowest Recorded Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		-19.3		-19.3		-16.6		-9		6.8		26.1		35.1		42.1		36.5		28.9		17.1		8.6		-16.6

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		0.8		---		---		---		---		---		0.1		0.5		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		102.2		---		---		0.2		1.1		7		17.8		29.9		28.8		15.9		1.8		---		---

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		203.3		---		0.3		3.7		13		27.8		30		31		31		30		25		10.3		1.4

Average Number of Days Above 32F/0C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		315.3		14.3		12.5		24.4		29.5		31		30		31		31		30		31		28.8		22

Average Number of Days Below 35F/2C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		162.4		30.7		28.2		28.3		17.5		3.3		---		---		---		0.4		7.8		18.1		28.2

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		135.6		29.3		26.6		24.7		11.2		0.8		---		---		---		0.1		3.9		13.9		25.3

Average Number of Days Below 28F/-2C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		95.7		23.9		21.8		17.6		5.3		---		---		---		---		---		1.5		6.9		18.7

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		32		11.7		11		3.7		0.1		---		---		---		---		---		---		0.2		5.5

Average Number of Days Below -4F/-20C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		2.6		1.2		0.8		0.4		---		---		---		---		---		---		---		---		0.3

Average Precipitation

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		36.7		2.1		2.1		2.9		2.7		3.1		3.5		3		3.1		3.8		3.4		3.5		3.5

Average Number of Days With Precipitation

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		134.7		11.7		10.4		11.1		11.8		11.7		10.5		9.1		9.3		10.4		11.4		13.1		14.2

Most Precipitation Reported in a Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		4.2		1.4		1.6		1.3		1.4		2.4		4.2		3		3.1		2.7		2.3		2.4		1.7

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

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		60		3.7		4.1		5		4.7		5.1		5.4		4.3		4.5		5.5		5.2		6.2		6.4

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

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		30.5		1.4		1.5		2.4		2.2		2.7		3.1		2.7		2.7		3.5		2.7		2.6		3

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

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		5.3		0.1		0.2		0.3		0.2		0.5		0.6		0.6		0.6		0.8		0.6		0.3		0.4

Average Rainfall

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		32.8		1		1.3		2.3		2.6		3.1		3.5		3		3.1		3.8		3.4		3.2		2.5

Average Number of Rainy Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		111.4		4.4		4.3		8.3		11.1		11.7		10.5		9.1		9.3		10.4		11.4		12.3		8.8

Most Rain Reported in a Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		4.2		1.4		1.4		1.3		1.4		2.4		4.2		3		3		2.7		2.2		2.4		1.7

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

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		53		1.8		2.5		4		4.5		5.1		5.4		4.3		4.5		5.5		5.2		5.8		4.6

Avg. No. of Days w/Rain Above 0.4in/10mm

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		27.8		0.8		1		1.9		2.2		2.7		3.1		2.7		2.7		3.5		2.7		2.4		2.2

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

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		5.1		0.1		0.1		0.3		0.2		0.5		0.6		0.6		0.6		0.8		0.6		0.2		0.3

Average Snowfall

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		39.7		10.9		8.8		5.9		1.1		0.1		---		---		---		---		---		2.9		10

Average Number of Days With Snow

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		27.4		7.7		6.9		3.5		1.2		0.1		---		---		---		---		---		1.6		6.5

Deepest Snow Cover Reported

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		18.1		6.3		18.1		15		1.2		---		---		---		---		---		---		3.9		18.1

Most Snow Reported in a Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		14.4		14.4		9.1		8.7		3.4		1.6		---		---		---		---		1.7		12		7

Avg. No. of Days w/Snowfall Above 2in/5cm

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		7.3		2		1.6		1.1		0.2		---		---		---		---		---		---		0.4		1.9

Avg. No. of Days w/Snow Above 3.9in/10cm

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		2.3		0.6		0.5		0.4		---		---		---		---		---		---		---		0.2		0.7

Heating Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		3865.5		707.3		637.7		557.1		369.1		191.7		55.8		8.3		12.8		79.3		250.1		401		595.3

Cooling Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		214.4		---		---		---		0.1		2.8		24.5		83.5		77.1		25.7		0.7		---		---

Growing Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		1963.3		---		---		---		---		105.4		378		579.7		564.2		336		---		---		---

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		14		15.2		15.9		15.5		14.4		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		3.6		1.5		2.4		3.3		4.4		5.2		5.9		5.9		5.1		4		2.7		1.6		1.3

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		1.6		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		2.8		3.6		4.1		4.5		4.7		5.1		5.2		5		4.6		3.7		2.5		2.4

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		2.7		3.5		3.8		4.2		4.6		5.4		5.6		5.1		4.6		3.5		2.3		2.3

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		3.6		1.5		2.4		3.3		4.4		5.2		5.9		5.9		5.1		4		2.7		1.6		1.3

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		4.7		3.2		4.3		5.1		5.5		5.6		5.8		5.7		5.7		5.5		4.5		3		3.1

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		5.2		3.2		4.4		5.3		5.9		6.2		7.1		6.7		6.4		6.1		4.7		3		3.2

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		1.3		2.1		2.6		3.7		4.2		4.7		4.8		4.6		3.1		2.2		1.1		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		1.4		0.7		0.9		1.3		1.8		2.2		2.2		2.2		1.9		1.4		1.1		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		3.1		2.2		2.8		3		3.8		3.9		4.1		4.3		4.5		3.4		2.8		1.5		1.5

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		2.7		1.9		2.6		2.4		3		3		3.4		3.8		4.2		2.8		2.4		1.1		1.3