TATLAYOKO LAKE, BRITISH COLUMBIA

Average Temperature

Years on Record: 25

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		4.3		-5.7		-2.9		0.7		4.5		8.3		11.6		13.9		13.9		10.1		4.8		-1.6		-6.3

Average High Temperature

Years on Record: 25

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		11.1		-0.7		3		7.2		11.8		16.1		19.4		22.4		22.7		18.6		11.5		3.1		-1.6

Average Low Temperature

Years on Record: 25

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		-2.6		-10.6		-8.7		-5.7		-2.8		0.6		3.7		5.4		5		1.5		-1.8		-6.2		-11.1

Highest Recorded Temperature

Years on Record: 76

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		37.8		15.6		17.8		20		29.4		33.5		33		37.8		33.9		32.2		27.8		18.3		15

Lowest Recorded Temperature

Years on Record: 76

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		-43.3		-43.3		-37.2		-32.8		-21.1		-10		-5		-3		-4		-9.5		-27		-39		-40.6

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
mm		435.5		40.2		23.2		26.7		20		31.9		37.3		39.6		33.8		26.9		53.7		55.3		47

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
mm		68.1		54.6		48		40.6		37		30.5		31		53.3		36.6		51.3		49		68.1		57.7

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
mm		324.7		20.2		9.9		14.6		15		29.8		37.3		39.6		33.8		26.5		50.2		31.5		16.3

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
mm		68.1		54.6		33		29.5		37		30.5		31		52.6		36.6		51.3		49		68.1		57.7

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
cm		110.8		20		13.4		12.1		5		2.1		---		---		---		0.4		3.5		23.8		30.7

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
cm		3.2		9.3		10.3		3.5		0.3		---		---		---		---		---		---		3.4		11.2

Average Snow Cover at Month End

Years on Record: 25

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		3		9.3		8.2		0.3		---		---		---		---		---		---		0.2		4.5		14

Deepest Snow Cover Reported

Years on Record: 25

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		72		57		60		55		11		6		---		---		---		---		3		72		31

Most Snow Reported in a Day

Years on Record: 77

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		48		44.5		48		25		17.8		16		1		0.8		---		5.3		14.6		39		35

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		2820.4		426.4		336.1		299.3		225.2		166.2		110.6		73.5		73.1		131.9		223.4		335.1		419.5

Cooling Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		2.9		---		---		---		---		---		0.1		1.2		1.5		0.1		---		---		---

Growing Degree Days

Years on Record: 60

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		223.4		---		---		---		---		---		16.7		120.6		86.1		---		---		---		---

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
km/h		194		47		64		56		37		31		29		2		---		---		---		---		---

Average Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		12.2		3.6		7.2		12.2		16.7		19.3		20.4		21.1		18		13.3		7.7		4.1		2.8

Average Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		5.9		2.3		3.9		6		7.5		9.1		9.9		9.5		8		6.3		4.2		2.5		1.8

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		13.9		7.2		12.1		16.7		18		17.7		17.6		18.7		18.1		16		11.2		7.3		6

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		13.6		6.3		10.7		14.9		18.1		18		18.1		20.3		18.6		15.5		10.4		6.6		5.3

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		12.2		3.6		7.2		12.2		16.7		19.3		20.4		21.1		18		13.3		7.7		4.1		2.8

Maximum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		6.2		2.5		4.1		6.3		7.5		9.2		10		10		8.2		7		4.6		2.9		1.9

Maximum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		16.2		8.3		13.3		18.1		20.1		20.6		20.8		22.8		21		20.2		13.1		9.4		6.4

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		17		7.6		11.8		16.9		21.4		23.3		24.7		27.2		23.1		20.6		12.5		8.6		5.7

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		3.2		6.3		10.1		14.6		17.2		18.5		18.8		15.6		10.7		7		3.5		2.5

Minimum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		5.7		2		3.6		5.5		7.4		9		9.8		9.4		8		5.8		3.8		2.3		1.6

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		6.1		10.3		13		15.3		15.7		16		16.6		15.3		12.4		10		6		5

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		10.6		5.3		9		10.9		13.9		14.2		14.8		16.1		13.8		10.9		9		5.3		4.3