LOIS RIVER DAM, BRITISH COLUMBIA

Average Precipitation

Years on Record: 27

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		1564.5		202.1		151.8		142.9		112.5		96.7		81.7		50.9		55.6		70.4		166.8		232.4		200.7

Average Number of Days With Precipitation

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		172.3		18.1		16.8		17.7		14.6		12.7		11.7		7.6		7.5		9.6		16.3		20.4		19.4

Most Precipitation Reported in a Day

Years on Record: 76

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		104.9		104.9		102.3		87.5		59.8		45.7		61.2		78.7		71.9		81.4		71.1		94.7		93.5

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		178		19.6		16.2		19		15.3		13.3		11.3		8.1		7.5		10		17.5		21.2		19.3

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		91.9		11.8		8.8		8.7		7.4		6.4		5		3.2		3.2		4.2		9.8		12.9		10.5

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		56.2		7.3		5.5		5		4		3.5		3.3		1.8		1.8		2.5		5.8		8.4		7.4

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		13.3		2		1.2		1.1		0.7		0.5		0.5		0.2		0.6		0.5		1.7		2.2		2

Average Rainfall

Years on Record: 27

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		1523.7		190.3		144.2		139.7		112.5		96.7		81.7		50.9		55.6		70.4		166.6		227.2		187.9

Average Number of Rainy Days

Years on Record: 27

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		174.3		18.5		15.4		18.7		15.3		13.3		11.3		8.1		7.5		10		17.4		20.7		18.2

Most Rain Reported in a Day

Years on Record: 76

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		104.9		104.9		102.3		87.5		59.8		45.7		61.2		78.7		71.9		81.4		71.1		94.7		93.5

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		89.3		11		8.2		8.5		7.4		6.4		5		3.2		3.2		4.2		9.8		12.5		9.8

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		54.2		6.6		5.2		4.7		4		3.5		3.3		1.8		1.8		2.5		5.8		8.2		7

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		13		2		1.2		1.1		0.7		0.5		0.5		0.2		0.6		0.5		1.7		2.2		1.9

Average Snowfall

Years on Record: 27

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		40.7		11.7		7.6		3.2		---		---		---		---		---		---		0.2		5.2		12.7

Average Number of Days With Snow

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		7.5		2.5		1.6		0.6		---		---		---		---		---		---		0.1		0.8		1.9

Average Snow Cover

Years on Record: 26

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

Average Snow Cover at Month End

Years on Record: 27

ANNUAL

JAN

FEB

MAR

APR

MAY

JUN

JUL

AUG

SEP

OCT

NOV

DEC

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Deepest Snow Cover Reported

Years on Record: 27

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		15		12		13		---		---		---		---		---		---		---		---		---		15

Most Snow Reported in a Day

Years on Record: 76

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		61		61		29.2		17.8		7.6		---		---		---		---		---		5		24.6		35

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		7.3		2.3		1.4		0.8		---		---		---		---		---		---		0.1		0.9		1.9

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		3.2		0.9		0.7		0.2		---		---		---		---		---		---		---		0.5		1

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		1.5		0.4		0.3		0.1		---		---		---		---		---		---		---		0.2		0.5

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

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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		0.5		---		---		---		---		---		---		---		---		---		---		---		0.5

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		0.3		---		---		---		---		---		---		---		---		---		---		---		0.3

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		0.2		---		---		---		---		---		---		---		---		---		---		---		0.2

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

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Average Length of Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		12.8		9.3		10.7		12.5		14.4		16.1		17		16.5		14.9		13.1		11.2		9.6		8.8

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		4.1		7.4		11.6		16.4		19.5		20.8		21.5		18.4		14.2		8.3		4.7		3.4

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		5.9		7.5		9		9.7		9.3		8.1		6.5		4.3		2.8		2.1

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		14.1		7.5		11.9		15.2		17.5		17.9		18		19.1		18.4		16.8		11.7		8.3		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		13.6		6.6		10.4		13.1		16.9		18.1		18.7		20.8		18.6		16.2		10.8		7.2		5.8

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		4.1		7.4		11.6		16.4		19.5		20.8		21.5		18.4		14.2		8.3		4.7		3.4

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		2.8		4.3		6.4		7.6		9.2		9.8		9.7		8.5		7.2		5		3.1		2.2

Maximum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		16.7		9.1		13.4		17.8		20.6		20.3		21.2		22.7		22.3		20.8		14.6		10.1		7.3

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		8.3		11.8		16.9		21.7		22.5		25		26.8		24.5		21.1		14.1		8.8		6.5

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		3.5		5.6		10		14.3		17		17.9		18.9		15.5		11.6		7.3		4.1		3

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		2.2		3.3		5.6		7.5		8.9		9.6		9.2		8		6		4		2.6		1.9

Minimum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		11.7		6.2		8.3		12.5		14.7		15.5		15.5		16.7		15.2		13.3		10.2		7		5.7

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		10.3		5.3		7		10.2		12.6		13.6		13.5		16.1		13.3		11.9		9.2		6		4.9