TATLAYOKO LAKE, BRITISH COLUMBIA

Average Temperature

Years on Record: 25

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		39.7		21.8		26.8		33.3		40.2		47		52.9		57.1		56.9		50.2		40.7		29.2		20.6

Average High Temperature

Years on Record: 25

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		52		30.7		37.4		44.9		53.2		60.9		67		72.3		72.8		65.6		52.6		37.6		29.2

Average Low Temperature

Years on Record: 25

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		27.4		12.9		16.3		21.8		27.1		33		38.7		41.7		40.9		34.8		28.7		20.9		12.1

Highest Recorded Temperature

Years on Record: 76

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		100		60.1		64		68		84.9		92.3		91.4		100		93		90		82		64.9		59

Lowest Recorded Temperature

Years on Record: 76

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		-45.9		-45.9		-35		-27		-6		14		23		26.6		24.8		14.9		-16.6		-38.2		-41.1

Average Number of Days Above 95F/35C

Years on Record: 25

ANNUAL

JAN

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APR

MAY

JUN

JUL

AUG

SEP

OCT

NOV

DEC

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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		2.8		---		---		---		---		0.1		0.1		1		1.5		0.1		---		---		---

Average Number of Days Above 86F/30C

Years on Record: 25

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		2.9		---		---		---		---		0.1		0.3		0.8		1.5		0.2		---		---		---

Average Number of Days Above 70F/21C

Years on Record: 25

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		69.7		---		---		---		0.8		5.6		11.6		19.9		20.2		10.4		1.4		---		---

Average Number of Days Above 50F/10C

Years on Record: 25

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		196		0.8		1.9		6.8		17.8		28.6		29.9		30.8		31		28.6		17		2.3		0.6

Average Number of Days Above 32F/0C

Years on Record: 25

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		316.3		16.8		21.1		29		29.9		31		30		31		31		30		30.4		22.2		14

Average Number of Days Below 35F/2C

Years on Record: 25

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		265.3		30.6		27.7		30.4		27.6		21.4		11.1		5.4		7.9		18.3		25.2		28.8		31

Average Number of Days Below 32F/0C

Years on Record: 25

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		225.2		29.2		26.4		28.4		24.6		15.8		5.9		1.3		3		12.5		21.1		26.7		30.3

Average Number of Days Below 28F/-2C

Years on Record: 25

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		158.6		25.7		22.1		21.3		15.6		7		0.7		0.1		0.2		4.9		13.4		20.6		27.2

Average Number of Days Below 10F/-12C

Years on Record: 25

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		51.8		13.5		10.4		4.4		0.3		---		---		---		---		---		1		5.8		16.4

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

Years on Record: 25

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		11.8		4.7		2		0.7		---		---		---		---		---		---		---		1.1		3.3

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

Years on Record: 25

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		1.6		0.5		0.2		---		---		---		---		---		---		---		---		0.2		0.6

Average Precipitation

Years on Record: 25

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		17.1		1.6		0.9		1.1		0.8		1.3		1.5		1.6		1.3		1.1		2.1		2.2		1.9

Average Number of Days With Precipitation

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		90.8		8.1		6.3		6.4		5.6		6.9		8.4		7.8		7.5		6.8		9.2		9.4		8.3

Most Precipitation Reported in a Day

Years on Record: 77

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		2.7		2.1		1.9		1.6		1.5		1.2		1.2		2.1		1.4		2		1.9		2.7		2.3

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

Years on Record: 25

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		90.9		7.8		5.2		6.1		5.8		7.5		8.5		8.6		6.9		7		9.9		9.5		8.2

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

Years on Record: 25

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		28.4		2.8		1.4		1.7		1		2.2		2.7		2.8		2.1		1.8		3.1		3.7		3.3

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

Years on Record: 25

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		12.1		1.1		0.8		0.6		0.4		0.7		1.1		1.2		0.9		0.6		1.5		1.7		1.5

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

Years on Record: 25

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		1.8		0.1		0.1		0.1		0.1		0.1		0.1		0.1		0.2		---		0.3		0.4		0.2

Average Rainfall

Years on Record: 25

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		12.8		0.8		0.4		0.6		0.6		1.2		1.5		1.6		1.3		1		2		1.2		0.6

Average Number of Rainy Days

Years on Record: 25

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		67.3		3.4		1.6		2.7		4.3		7.1		8.5		8.6		6.9		7		9.2		5.5		2.5

Most Rain Reported in a Day

Years on Record: 77

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		2.7		2.1		1.3		1.2		1.5		1.2		1.2		2.1		1.4		2		1.9		2.7		2.3

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

Years on Record: 25

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		21.3		1.4		0.5		0.9		0.7		2.1		2.7		2.8		2.1		1.8		3		2		1.4

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

Years on Record: 25

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		8.8		0.5		0.3		0.5		0.2		0.6		1.1		1.2		0.9		0.6		1.3		1		0.6

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

Years on Record: 25

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		1.5		0.1		0.1		0.1		0.1		0.1		0.1		0.1		0.2		---		0.3		0.2		0.1

Average Snowfall

Years on Record: 25

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		43.6		7.9		5.3		4.8		2		0.8		---		---		---		0.2		1.4		9.4		12.1

Average Number of Days With Snow

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		31.1		6.3		4.7		4.1		2.4		0.6		---		---		---		0.2		1.3		5.5		6.1

Average Snow Cover

Years on Record: 24

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		1.3		3.7		4.1		1.4		0.1		---		---		---		---		---		---		1.3		4.4

Average Snow Cover at Month End

Years on Record: 25

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		1.2		3.7		3.2		0.1		---		---		---		---		---		---		0.1		1.8		5.5

Deepest Snow Cover Reported

Years on Record: 25

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		28.3		22.4		23.6		21.7		4.3		2.4		---		---		---		---		1.2		28.3		12.2

Most Snow Reported in a Day

Years on Record: 77

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		18.9		17.5		18.9		9.8		7		6.3		0.4		0.3		---		2.1		5.7		15.4		13.8

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

Years on Record: 25

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		28.7		5.4		3.8		3.9		2		0.7		---		---		---		0.2		1.4		5		6.4

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

Years on Record: 25

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		7.3		1.3		1		0.7		0.3		0.1		---		---		---		---		0.2		1.7		2.1

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

Years on Record: 25

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		2.7		0.4		0.4		0.1		0.1		0.1		---		---		---		---		---		0.6		1

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

Years on Record: 25

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

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

Years on Record: 23

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		84		19.1		17.6		7.9		2.2		0.1		---		---		---		---		0.3		12.4		24.4

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

Years on Record: 23

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		65.4		18.1		14.2		5		0.7		0.1		---		---		---		---		---		6.9		20.5

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

Years on Record: 23

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		46.8		13.2		10.9		3.4		0.2		---		---		---		---		---		---		3.3		15.7

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

Years on Record: 23

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		24.4		7.9		6.2		2		---		---		---		---		---		---		---		0.9		7.5

Heating Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		5076.7		767.6		605		538.8		405.3		299.2		199		132.3		131.6		237.5		402.2		603.1		755.1

Cooling Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		5.2		---		---		---		---		---		0.2		2.2		2.7		0.1		---		---		---

Growing Degree Days

Years on Record: 60

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		402		---		---		---		---		---		30		217		155		---		---		---		---

Average Length of Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		12.9		9.1		10.6		12.5		14.6		16.4		17.4		16.8		15.1		13.1		11.2		9.4		8.6

Highest Reported Hourly Wind Speed

Years on Record: 2

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mph		120.5		29.2		39.8		34.8		23		19.3		18		1.2		---		---		---		---		---

Average Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		3.4		1		2		3.4		4.6		5.4		5.7		5.9		5		3.7		2.1		1.1		0.8

Average Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.6		0.6		1.1		1.7		2.1		2.5		2.8		2.6		2.2		1.7		1.2		0.7		0.5

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		3.9		2		3.4		4.6		5		4.9		4.9		5.2		5		4.5		3.1		2		1.7

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		3.8		1.8		3		4.2		5		5		5		5.6		5.2		4.3		2.9		1.8		1.5

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		3.4		1		2		3.4		4.6		5.4		5.7		5.9		5		3.7		2.1		1.1		0.8

Maximum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.7		0.7		1.2		1.8		2.1		2.6		2.8		2.8		2.3		2		1.3		0.8		0.5

Maximum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		4.5		2.3		3.7		5		5.6		5.7		5.8		6.3		5.8		5.6		3.7		2.6		1.8

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		4.7		2.1		3.3		4.7		5.9		6.5		6.9		7.6		6.4		5.7		3.5		2.4		1.6

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		0.9		1.8		2.8		4.1		4.8		5.2		5.2		4.3		3		1.9		1		0.7

Minimum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.6		0.6		1		1.5		2.1		2.5		2.7		2.6		2.2		1.6		1.1		0.6		0.5

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		1.7		2.9		3.6		4.3		4.4		4.4		4.6		4.3		3.4		2.8		1.7		1.4

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		3		1.5		2.5		3		3.9		3.9		4.1		4.5		3.8		3		2.5		1.5		1.2