WATERLOO AIRPORT, ONTARIO

Average Temperature

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		44.6		20.4		22.2		30.2		43.1		54.4		63.6		68.1		66		58.2		46.8		36.5		26

Average High Temperature

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		53.7		27.3		29.8		38.5		52.6		65.3		74.4		78.8		76.7		68.8		56.3		43.3		32.3

Average Low Temperature

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		35.5		13.4		14.6		21.9		33.4		43.5		52.7		57.2		55.2		47.5		37.3		29.6		19.8

Highest Recorded Temperature

Years on Record: 32

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		97.7		57.6		56.7		75.9		84.6		89.6		97		96.8		97.7		91.9		84.9		71.1		65.7

Lowest Recorded Temperature

Years on Record: 32

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		-25.4		-25.4		-20.6		-13.7		3		25		30.9		41		34		25.3		17.1		4.3		-17

Average Number of Days Above 95F/35C

Years on Record: 22

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

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		6.9		---		---		---		---		0.3		1.7		3		1.5		0.4		---		---		---

Average Number of Days Above 86F/30C

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		8.4		---		---		---		---		0.3		2.1		3.6		1.9		0.5		---		---		---

Average Number of Days Above 70F/21C

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		115.7		---		---		0.3		2.9		11.6		23.5		29.7		28.1		15.9		3.6		0.2		---

Average Number of Days Above 50F/10C

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		205.4		0.5		0.5		4.9		17.3		29.3		29.9		31		31		29.6		22.5		7.4		1.6

Average Number of Days Above 32F/0C

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		301.7		10.3		12.5		21.8		29.4		31		30		31		31		30		31		26.8		17

Average Number of Days Below 35F/2C

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		184.7		30.5		27.9		29.2		19.6		6.1		0.2		---		0.1		2.6		14.6		24.2		29.8

Average Number of Days Below 32F/0C

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		157.6		29.5		26.4		27		14.5		2.1		---		---		---		0.8		9.3		19.7		28.5

Average Number of Days Below 28F/-2C

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		121.3		27.2		23.6		21.9		8.3		0.2		---		---		---		0.2		3.8		13.1		23.1

Average Number of Days Below 10F/-12C

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		45.4		15.1		13.4		6.7		0.2		---		---		---		---		---		---		0.9		9.1

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

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		6		2.9		2		0.4		---		---		---		---		---		---		---		---		0.7

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

Years on Record: 22

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

Lowest Reported Wind Chill

Years on Record: 36

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		-40.8		-40.8		-34.9		-22.4		-5.1		17.5		32		32		32		24.6		10.5		-8		-24.1

Highest Reported Humidex

Years on Record: 36

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		118.9		56.1		55.3		82.4		92.7		103.3		109.8		117.8		118.9		106.1		94.2		75.8		71.8

Average Precipitation

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		36.1		2.6		2.2		2.4		2.9		3.2		3.2		3.9		3.3		3.5		2.7		3.4		2.8

Average Number of Days With Precipitation

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		164.4		18.3		14.3		14.2		13.4		12		11.7		10.4		11		11.5		13.3		16.1		18.1

Most Precipitation Reported in a Day

Years on Record: 32

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		3.5		1.7		1.9		2.1		2.1		2		2.1		3.5		2.9		2.9		1.5		2.2		1.4

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

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		166		18.2		14.2		13.8		13.7		12.4		12		10.6		10.7		12.2		13.9		16.4		18.1

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

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		55.1		4.3		3.2		4		4.5		5.2		5.2		5.1		4.4		5		4.5		5.3		4.5

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

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		29.2		1.5		1.6		1.8		2.3		2.9		3.1		3.4		2.8		2.8		2.4		2.5		2.1

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

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		5.1		0.1		0.2		0.3		0.3		0.5		0.4		1		0.8		0.7		0.1		0.5		0.4

Average Rainfall

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		30.6		1.1		1.2		1.4		2.7		3.2		3.2		3.9		3.3		3.5		2.6		3		1.5

Average Number of Rainy Days

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		118.7		5.6		5		6.9		11.5		12.4		12		10.6		10.7		12.2		13.7		11.6		6.9

Most Rain Reported in a Day

Years on Record: 32

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		3.5		1.7		1.9		1.4		2.1		2		2.1		3.5		2.9		2.9		1.5		2.2		1.4

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

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		46.9		1.8		1.8		2.5		4.1		5.1		5.2		5.1		4.4		5		4.4		4.7		2.8

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

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		26.4		1		1		1.4		2.1		2.9		3.1		3.4		2.8		2.8		2.4		2.4		1.2

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

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		4.6		0.1		0.1		0.1		0.3		0.5		0.4		1		0.8		0.7		0.1		0.5		0.1

Average Snowfall

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		62.9		17.2		11.9		10.4		2.9		0.2		---		---		---		---		0.6		5.1		14.6

Average Number of Days With Snow

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		64.1		16.7		12.6		8.9		3.3		0.1		---		---		---		---		0.8		7.1		14.6

Average Snow Cover

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		1.1		4.4		4.5		2.2		0.1		---		---		---		---		---		---		0.2		1.8

Average Snow Cover at Month End

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		1		4.7		3.4		0.2		---		---		---		---		---		---		---		0.2		3.3

Deepest Snow Cover Reported

Years on Record: 32

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		30.3		22.8		29.1		30.3		7.1		---		---		---		---		---		0.8		7.5		19.7

Most Snow Reported in a Day

Years on Record: 32

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		9		6.6		7		8.3		9		2.4		---		---		---		---		2.4		6.5		8.8

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

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		62.2		16.1		11.9		9		3.3		0.2		---		---		---		---		0.9		6.5		14.4

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

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		9.6		2.5		1.8		1.9		0.4		0.1		---		---		---		---		0.1		0.7		2.3

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

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		2.5		0.6		0.5		0.6		0.1		---		---		---		---		---		---		0.1		0.6

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

Years on Record: 22

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NOV

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Av. # of Days w/Snow Depth Above 0.4in/10mm

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		95.3		26.9		24.3		17.2		1.7		---		---		---		---		---		0.2		5.6		19.4

Avg. # of Days w/Snow Depth Above 2in/5cm

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		59.8		20.6		17.5		9.7		0.4		---		---		---		---		---		---		1.1		10.5

Av. # of Days w/Snow Depth Above 3.9in/10cm

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		36.2		13.7		11.2		6.5		0.1		---		---		---		---		---		---		0.3		4.5

Av. # of Days w/Snow Depth Above 7.8in/20cm

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		14.7		6.8		5.1		1.5		---		---		---		---		---		---		---		---		1.4

Average Morning Relative Humidity

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		87.8		86.4		83.4		84.8		84.4		84.7		87		90.1		93.6		94.3		90.6		87.6		87.1

Average Evening Relative Humidity

Years on Record: 1

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		3.7		78.2		75.4		---		---		---		---		---		---		---		---		---		---

Heating Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		4288.3		777.4		689.3		598.2		367.6		179.4		57.2		16.1		29.3		125		305.4		469.3		674.1

Cooling Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		187.8		---		---		---		0.8		10.5		36.7		72		52.1		15.1		0.6		---		---

Growing Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		1795.8		---		---		---		---		139.5		393		545.6		486.7		231		---		---		---

Average Length of Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		12.8		9.9		11.1		12.5		14		15.3		16		15.6		14.4		12.9		11.5		10.2		9.6

Average Wind Speed

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mph		7.8		9.5		8.9		9.3		9.1		7.6		6.5		6		5.3		6.1		7.3		9		9.2

Highest Reported Hourly Wind Speed

Years on Record: 36

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mph		46		43.5		41.6		46		44.7		44.1		32.3		32.3		28		32.9		39.1		41		37.9

Highest Reported Wind Gust

Years on Record: 31

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mph		74.6		70.2		70.2		74.6		60.9		65.9		55.3		69		60.9		55.3		59.7		62.1		59.7

Avg. # of Days w/Wind Above 32 mph/52 km/h

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		13.3		1.9		1.3		1.7		1.6		0.9		0.7		0.4		0.2		0.1		1.2		1.6		1.7

Avg. # of Days w/Wind Above 39 mph/63 km/h

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		4.8		0.7		0.4		0.7		0.7		0.2		0.2		0.1		---		---		0.4		0.8		0.7

Average Primary Wind Direction

Years on Record: 22

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

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