CORNWALL - HYDRO STATION, ONTARIO

Average Temperature

Years on Record: 15

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		7		-9.3		-7.7		-1.8		7		13.7		18.5		21.6		20.2		15.3		8.8		2.5		-5.3

Average High Temperature

Years on Record: 15

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		11.8		-4.9		-3		3		12.1		19.4		24		27.2		25.5		20.4		13.2		6.1		-1.4

Average Low Temperature

Years on Record: 15

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		2.1		-13.7		-12.3		-6.7		1.8		8		12.9		15.9		15		10.3		4.3		-1.2		-9.2

Highest Recorded Temperature

Years on Record: 41

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		36.1		17		16		24.4		29.5		33.3		36.1		35.6		36.1		32.5		28		23.3		16.7

Lowest Recorded Temperature

Years on Record: 41

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		-44.5		-38.9		-44.5		-27		-14.4		-6.1		0.5		5.5		3.9		-3		-7.2		-17.5		-32.5

Average Number of Days Above 95F/35C

Years on Record: 15

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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		10.3		---		---		---		---		0.6		1.8		4.8		2.8		0.4		---		---		---

Average Number of Days Above 86F/30C

Years on Record: 15

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		11.1		---		---		---		---		0.3		2.2		5.6		2.9		0.2		---		---		---

Average Number of Days Above 70F/21C

Years on Record: 15

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		116.9		---		---		0.2		3.5		13.1		24.1		30.1		28.1		14.8		2.9		0.2		---

Average Number of Days Above 50F/10C

Years on Record: 15

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		199.8		0.2		0.9		4.4		16.6		29.6		30		31		31		29.2		20.5		5.8		0.5

Average Number of Days Above 32F/0C

Years on Record: 15

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		292.3		8.9		9.2		20.9		29.4		31		30		31		31		30		31		25.3		14.6

Average Number of Days Below 35F/2C

Years on Record: 13

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		172.2		30.7		27.2		28.8		16.3		2.9		0.1		---		---		1.5		11.2		23.3		30.3

Average Number of Days Below 32F/0C

Years on Record: 13

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		148.6		30		26		26		11.1		1.1		---		---		---		0.6		6.8		19		28

Average Number of Days Below 28F/-2C

Years on Record: 13

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		115.5		27.9		23.9		20.2		4.8		0.1		---		---		---		0.1		2.1		12.1		24.4

Average Number of Days Below 10F/-12C

Years on Record: 13

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		59.4		20		16.7		9.4		0.3		---		---		---		---		---		---		1.1		12

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

Years on Record: 13

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		15.7		6.7		4.5		1.6		---		---		---		---		---		---		---		---		2.9

Average Number of Days Below -22F/-30C

Years on Record: 13

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

Average Precipitation

Years on Record: 15

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		981.8		73.7		72.4		60.9		85.4		80.7		94.1		81.5		93.9		90.3		79.9		88.3		80.8

Average Number of Days With Precipitation

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		147.6		12.4		10.5		10.8		12.1		13.5		12.1		11.4		12.4		12.6		13.3		13.8		12.9

Most Precipitation Reported in a Day

Years on Record: 41

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		90.2		38.1		50		37.3		50.8		33		62		55.1		70.6		90.2		48.3		49.8		56.7

Avg. No. of Days w/Precip. Above 0.1in/2.5mm

Years on Record: 15

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		155.5		12.9		11.1		11.2		13.6		14.9		12.6		11.4		13.2		13.4		13.9		14.7		12.6

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

Years on Record: 15

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		67.1		5.3		5.3		4.9		5.9		5.6		5.5		4.9		5.9		5.9		6.1		6.4		5.3

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

Years on Record: 15

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		31.6		1.7		2.1		1.9		2.8		2.7		3.3		2.9		3.4		3		2.5		3		2.4

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

Years on Record: 15

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		5.1		0.4		0.3		0.1		0.4		0.3		0.6		0.7		0.8		0.5		0.1		0.5		0.4

Average Rainfall

Years on Record: 15

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		797.3		27		25.2		32.5		76.2		80.6		94.1		81.5		93.9		90.3		78.1		78.9		39

Average Number of Rainy Days

Years on Record: 15

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		123		3.5		3.1		6.6		12.6		14.9		12.6		11.4		13.2		13.4		13.9		12.9		4.9

Most Rain Reported in a Day

Years on Record: 41

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		90.2		38.1		50		37.3		38.1		33		62		55.1		70.6		90.2		48.3		49.8		56.7

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

Years on Record: 15

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		52.8		1.7		1.7		2.5		5.4		5.6		5.5		4.9		5.9		5.9		6.1		5.6		2.1

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

Years on Record: 15

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		26.5		0.9		0.7		1		2.4		2.7		3.3		2.9		3.4		3		2.4		2.6		1.2

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

Years on Record: 15

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		4.6		0.3		0.2		---		0.3		0.3		0.6		0.7		0.8		0.5		0.1		0.5		0.2

Average Snowfall

Years on Record: 15

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		184.5		46.7		47.2		28.4		9.2		0.1		---		---		---		---		1.8		9.4		41.8

Average Number of Days With Snow

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		38.1		10		8.4		5.6		1.6		---		---		---		---		---		0.3		3.1		9

Deepest Snow Cover Reported

Years on Record: 1

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		---		18		35		---		---		---		---		---		---		---		---		---		---

Most Snow Reported in a Day

Years on Record: 41

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		50.8		38.1		40.6		25.4		50.8		6.4		---		---		---		---		16		20.3		36

Avg. No. of Days w/Snow Above 1in/2.5cm

Years on Record: 15

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		37.2		10.1		8.3		5.1		1.6		0.1		---		---		---		---		0.3		3.1		8.6

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

Years on Record: 15

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		14.5		3.6		3.5		2.4		0.6		---		---		---		---		---		0.1		0.8		3.5

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

Years on Record: 15

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		4.4		0.8		1.3		0.9		0.2		---		---		---		---		---		0.1		0.1		1

Avg. No. of Days w/Snowfall Above 10in/25cm

Years on Record: 15

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		0.5		0.1		0.1		0.1		0.1		---		---		---		---		---		---		---		0.1

Heating Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		2424.6		470		406.5		341.9		194.2		80		22.2		3.7		10.2		60.2		163.4		263.2		409.1

Cooling Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		158.3		---		---		---		0.8		8		26.2		62.1		49.1		11.3		0.8		---		---

Growing Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		1192.1		---		---		---		---		117.1		251.7		353.1		316.9		153.3		---		---		---

Average Length of Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		12.8		9.8		11		12.5		14.1		15.5		16.2		15.8		14.5		13		11.4		10.1		9.4

Average Monthly Sunshine

Years on Record: 12

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		1904.3		85.3		114.8		153		166.2		209.9		241.2		274.1		229.7		163.7		129.9		75.6		61

Average Number of Days with Sun

Years on Record: 12

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		283.2		19		20.9		24		23.2		26.6		27.1		29.2		27.9		25.7		23.9		18.5		17.2

Most Sunshine Reported in a Day

Years on Record: 36

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		14.9		9.2		11.3		11.6		13.9		14.8		14.9		14.9		14.6		12.8		11		9.6		8.5

Average Wind Speed

Years on Record: 11

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
km/h		15.4		16.7		16.4		16.6		17.4		15		14.2		13.2		12.7		13.6		14.9		17.1		16.7

Highest Reported Hourly Wind Speed

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
km/h		68		64		61		63		61		68		48		42		45		47		56		56		56

Average Primary Wind Direction

Years on Record: 11

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
°		270		270		270		90		90		270		270		270		270		225		270		315		315

Average Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		12.8		5.8		9.2		13.3		16.3		18.6		20.3		20.3		17.7		13.5		8.7		5.4		4.7

Average Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		5.2		2.2		3.1		4.7		6.6		8.2		8.8		8.3		7.1		5.5		3.8		2.6		1.9

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		14.9		11.9		15.4		17.9		17.1		17.1		17.7		18.1		17.5		15.6		12.2		9.1		9.3

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		15.2		12.1		16.1		18		17.2		17.1		18.5		19.3		18		15.4		11.7		8.9		10.2

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		12.8		5.8		9.2		13.3		16.3		18.6		20.3		20.3		17.7		13.5		8.7		5.4		4.7

Maximum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		5.4		2.3		3.4		5		7		8.4		9		8.6		7.4		5.7		4		2.6		2

Maximum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		17.8		14.6		17.4		22.6		21.4		20.2		20.6		20.3		20		18.2		15.2		10.9		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		20		15.6		18.9		24.8		25		23.3		24.9		24.1		22.8		19.6		15.7		11.1		14.6

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		10.7		5.2		7.4		11.8		12.9		15.1		17.2		18.3		14.6		11.2		6.4		4.4		3.6

Minimum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		4.8		2		2.9		3.9		5.8		7.6		8.1		7.8		6.6		5.2		3.7		2.5		1.7

Minimum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		11.8		10		11.2		15.2		13		13.8		15		16.3		14.2		12.3		7.9		6.9		6.4

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		10.5		9.7		10.4		14.3		10.6		11		13.1		15.6		12.2		10.6		6.3		6.1		6.1