MAMETTE LAKE, BRITISH COLUMBIA

Average Temperature

Years on Record: 27

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		4.4		-4.9		-3.3		---		3.9		8.2		11.8		15		14.9		10.6		4.7		-1.9		-5.8

Average High Temperature

Years on Record: 27

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		9.5		-0.7		1.1		4.7		9.2		13.8		17.5		21.2		21.2		16.7		9.6		1.9		-1.8

Average Low Temperature

Years on Record: 27

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		-0.7		-9		-7.7		-4.8		-1.4		2.5		6.1		8.7		8.5		4.5		-0.2		-5.7		-9.7

Highest Recorded Temperature

Years on Record: 41

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		35		9		12.2		17.5		26.1		31		31		35		32		32.5		24.5		15.5		13

Lowest Recorded Temperature

Years on Record: 41

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		-43.9		-38.3		-32		-30		-16.7		-6.5		-3.3		-1.7		-2.5		-6		-27		-41		-43.9

Average Number of Days Above 95F/35C

Years on Record: 27

ANNUAL

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NOV

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Average Number of Days Above 86F/30C

Years on Record: 27

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		1.1		---		---		---		---		---		---		0.6		0.3		0.1		---		---		---

Average Number of Days Above 70F/21C

Years on Record: 27

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		57.3		---		---		---		0.4		4		8.6		17		17.9		8.4		1.1		---		---

Average Number of Days Above 50F/10C

Years on Record: 27

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		164.6		---		0.3		1.9		11.2		22		28.8		30.6		31		25.6		12.4		0.8		---

Average Number of Days Above 32F/0C

Years on Record: 27

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		307.8		16.6		18.2		27.3		29.7		31		30		31		31		30		30		21.1		11.8

Average Number of Days Below 35F/2C

Years on Record: 27

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		226.4		30.7		27.9		30.2		26.4		15.5		3.8		0.5		0.5		8.5		22.7		28.8		30.9

Average Number of Days Below 32F/0C

Years on Record: 27

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		196.6		30.1		27.1		28.6		21.5		8.5		1.4		0.1		0.1		4.5		17.2		26.8		30.6

Average Number of Days Below 28F/-2C

Years on Record: 27

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		144.2		26		23.4		21		12.1		2.4		0.1		---		---		1.3		8.6		21.1		28.1

Average Number of Days Below 10F/-12C

Years on Record: 27

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		39.4		10.4		8.2		2.9		---		---		---		---		---		---		0.6		4.6		12.6

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

Years on Record: 27

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		8.1		2.8		1.1		0.4		---		---		---		---		---		---		0.1		1.2		2.5

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

Years on Record: 27

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		0.9		0.3		0.1		---		---		---		---		---		---		---		---		0.2		0.3

Average Precipitation

Years on Record: 27

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		393.2		27.5		21		16.7		21.3		41.3		47.9		43.5		31.7		31.2		30		40.4		40.8

Most Precipitation Reported in a Day

Years on Record: 41

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		50.5		27.9		18.5		20.5		20.8		50.5		37.1		30		32.1		24		33		46		26.9

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

Years on Record: 27

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		99.9		8.3		6.4		6.2		5.9		10.4		10		8.7		7.6		7.7		8.3		10.3		10

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

Years on Record: 27

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		26.1		1.8		1.5		0.8		1.4		2.7		3.2		2.9		2.2		2.1		2.1		2.7		2.9

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

Years on Record: 27

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		8.3		0.5		0.2		---		0.3		1		1.4		1.2		0.5		0.8		0.5		0.8		1.2

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

Years on Record: 27

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

Avg. No. of Days w/Rain Above 0.1in/2mm

Years on Record: 27

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		60.6		0.7		0.8		1.4		3.6		9.5		10		8.7		7.6		7.6		6.4		3.5		0.8

Average Rainfall

Years on Record: 27

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		243.4		1.9		2.9		3.1		11.1		35.3		47.1		43.5		31.7		30.2		21.9		12.2		2.5

Most Rain Reported in a Day

Years on Record: 41

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		50.5		26.4		16		14.2		16		50.5		37.1		30		32.1		24		33		21		10

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

Years on Record: 27

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		15.9		0.1		0.2		0.2		0.6		2.2		3.1		2.9		2.2		2		1.5		0.7		0.2

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

Years on Record: 27

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		5.4		---		---		---		0.2		0.7		1.4		1.2		0.5		0.7		0.3		0.3		---

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

Years on Record: 27

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		0.6		---		---		---		---		0.1		0.1		0.2		0.1		---		---		---		---

Average Snowfall

Years on Record: 27

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		149.9		25.6		18.1		13.6		10.3		5.9		0.8		---		---		0.9		8.2		28.3		38.3

Average Snow Cover at Month End

Years on Record: 18

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		5.3		17.6		10.2		---		---		---		---		---		---		---		0.9		9.9		24.9

Deepest Snow Cover Reported

Years on Record: 24

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		90		90		56		37		7		---		---		---		---		1		13		41		60

Most Snow Reported in a Day

Years on Record: 41

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		46		27.9		18.5		20.5		17.8		16		7		5.1		---		7		17.8		46		26.9

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

Years on Record: 27

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		43.3		8		5.8		5.1		2.8		1.4		0.2		---		---		0.5		2.6		7.4		9.5

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

Years on Record: 27

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		10.1		1.7		1.2		0.7		0.8		0.4		0.1		---		---		0.1		0.5		1.9		2.7

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

Years on Record: 27

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		2.6		0.4		0.2		---		0.2		0.2		---		---		---		---		0.2		0.4		1

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

Years on Record: 27

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

Heating Degree Days

Years on Record: 23

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		6088		757.8		635.6		620		466.7		361.7		225		155		155		283.3		430.6		633.3		757.8

Growing Degree Days

Years on Record: 23

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		231.6		---		---		---		---		---		25		103.3		103.3		---		---		---		---

Average Length of Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		12.9		9.2		10.7		12.5		14.5		16.2		17.2		16.6		15		13.1		11.2		9.5		8.7

Average Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		12.5		4		7.5		12.4		17		19.8		20.7		21.4		18.3		13.8		8.1		4.5		3.1

Average Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		6		2.5		4		6.1		7.5		9.1		9.8		9.4		8		6.4		4.3		2.7		2

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		14.3		7.6		12.4		16.8		18.2		18.2		17.9		19		18.4		16.4		11.7		8.1		6.5

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		13.9		6.8		10.9		14.9		18.3		18.7		18.6		20.5		18.9		15.9		10.8		7		5.7

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		12.5		4		7.5		12.4		17		19.8		20.7		21.4		18.3		13.8		8.1		4.5		3.1

Maximum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		6.3		2.7		4.2		6.5		7.6		9.1		9.9		10.3		8.3		7.1		4.8		3		2.1

Maximum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		16.7		9.1		13.5		18.9		20.6		20.8		20.9		23.5		21.5		20.3		13.7		10		7.1

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		17.4		8.4		11.9		17.7		22		23.5		24.7		27.8		23.6		20.6		13.1		8.6		6.4

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		10.9		3.6		6.7		10.4		15.3		18		18.5		17.9		15.2		11.4		7.1		4		2.8

Minimum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		5.8		2.3		3.7		5.7		7.4		9		9.7		9.3		8		5.9		3.9		2.5		1.8

Minimum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		12.2		6.7		10.8		13.5		16.1		16.5		16		15.8		14.8		13.2		10.1		7		5.5

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		10.9		5.9		9.3		11.3		14.9		15.6		14.7		14.4		12.8		11.8		9		6.1		4.8