ALTONA, MANITOBA

Average Temperature

Years on Record: 27

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		3.9		-15		-11.8		-4.8		5.1		12.6		17.9		20.3		19.5		13.5		5.6		-4.1		-11.9

Average High Temperature

Years on Record: 27

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		9.4		-10.1		-6.8		-0.1		11.1		19.2		23.7		26.3		26		19.8		11		0.1		-7.6

Average Low Temperature

Years on Record: 27

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		-1.6		-19.9		-16.8		-9.4		-0.9		5.9		12		14.3		12.9		7.2		0.2		-8.1		-16.1

Highest Recorded Temperature

Years on Record: 58

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		40		8		14		22.2		35.6		36.7		38		38.9		40		39		33.5		25		14.4

Lowest Recorded Temperature

Years on Record: 58

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		-40.6		-40		-40.6		-33.5		-23.9		-13.9		-2.8		2.8		---		-6.7		-30		-35		-37.2

Average Number of Days Above 95F/35C

Years on Record: 27

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		1.1		---		---		---		---		---		0.4		0.2		0.5		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		16.8		---		---		---		0.3		2.1		3		4.6		5.6		1.2		---		---		---

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		16.6		---		---		---		0.2		1.5		3.1		4.9		5.7		1.2		---		---		---

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		112.3		---		---		---		3.8		13.8		22.4		28.6		27.2		13.9		2.5		0.1		---

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		184.5		---		0.1		1.9		16		28.1		29.9		31		31		28		16.2		2.2		---

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		254.9		3.4		5.7		16.1		27.5		31		30		31		31		30		29.7		14.7		4.8

Average Number of Days Below 35F/2C

Years on Record: 26

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		206.1		31		28.1		30.8		23.4		8.1		0.2		---		0.1		4.2		20.1		29.2		31

Average Number of Days Below 32F/0C

Years on Record: 26

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		187.2		30.9		27.9		29		18.4		5.2		---		---		---		1.6		15.3		28.1		30.9

Average Number of Days Below 28F/-2C

Years on Record: 26

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		156.4		30.8		26.5		24		10.5		1.8		---		---		---		0.4		8.2		24.2		30

Average Number of Days Below 10F/-12C

Years on Record: 26

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		93.7		26.5		20.5		12.9		1.4		---		---		---		---		---		0.7		9.6		22.2

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

Years on Record: 26

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		42.8		15.7		11.2		3.4		---		---		---		---		---		---		---		1.7		10.7

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

Years on Record: 26

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		6.8		3.4		1.9		0.2		---		---		---		---		---		---		---		0.1		1.2

Average Precipitation

Years on Record: 27

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		565.8		28.4		20.6		29.6		27.8		70.6		101.5		75		67.9		45		40.2		29.4		29.7

Average Number of Days With Precipitation

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		96.1		8.8		6.1		6.6		5.4		9		10.8		10.3		9		8.2		7.4		6.1		8.5

Most Precipitation Reported in a Day

Years on Record: 59

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		116.1		22.9		24		60		45		50		116.1		101.3		95		77.2		57.7		21		23

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		97.6		9.1		6.9		6.9		4.9		10		11		9.6		8.2		7.9		7.7		6.4		9.1

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		34.8		1.9		1.3		1.9		1.8		4.6		6.1		4.4		3.5		2.9		2.4		2.1		2.1

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		16.3		0.3		0.3		0.7		0.9		2.5		3.3		2.3		2.1		1.4		1.2		0.9		0.4

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		3.2		---		---		0.1		0.1		0.4		0.9		0.7		0.7		0.2		0.2		---		---

Average Rainfall

Years on Record: 27

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		434.1		0.5		2.4		12.8		16.6		68.8		101.5		75		67.9		45		33.5		8.3		1.8

Average Number of Rainy Days

Years on Record: 27

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		61.7		0.2		0.6		2.3		3.6		9.8		11		9.6		8.2		7.9		6.6		1.6		0.4

Most Rain Reported in a Day

Years on Record: 59

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		116.1		8		18		60		33.5		50		116.1		101.3		95		77.2		57.7		21		18

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		26.1		---		0.2		0.7		1.2		4.5		6.1		4.4		3.5		2.9		2		0.6		0.1

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		13.6		---		---		0.3		0.4		2.5		3.3		2.3		2.1		1.4		1		0.2		---

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		3.1		---		---		0.1		---		0.4		0.9		0.7		0.7		0.2		0.2		---		---

Average Snowfall

Years on Record: 27

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		131.7		27.9		18.2		16.8		11.2		1.8		---		---		---		---		6.7		21.1		27.9

Average Number of Days With Snow

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		34.7		8.7		5.6		4.9		1.8		0.1		---		---		---		---		0.8		4.8		8.1

Average Snow Cover at Month End

Years on Record: 1

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		2.2		12		5		---		---		---		---		---		---		---		0.4		2.5		6

Deepest Snow Cover Reported

Years on Record: 13

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		33		15		14		---		15		7		---		---		---		---		20		33		14

Most Snow Reported in a Day

Years on Record: 59

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		45		22.9		19.6		22.9		45		18		---		---		---		---		24		20		23

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		37.3		9		6.4		5		1.7		0.3		---		---		---		---		1.2		5		8.6

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		8.9		1.9		1.1		1.2		0.7		0.2		---		---		---		---		0.6		1.5		1.8

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		2.5		0.3		0.2		0.3		0.4		---		---		---		---		---		0.2		0.7		0.4

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

Years on Record: 27

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Heating Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		3064.9		604.4		481.1		400		224.8		96.5		28.1		7.7		16.3		87.7		207.6		372.2		538.4

Cooling Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		120.7		---		---		---		0.4		9.4		25.8		43		36.3		5.8		---		---		---

Growing Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		1015.4		---		---		---		---		93		236.7		310		282.4		93.3		---		---		---

Average Length of Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		12.9		9.4		10.8		12.5		14.4		16		16.9		16.4		14.9		13.1		11.3		9.7		8.9

Average Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		12.7		4.6		7.9		12.5		17.1		20		20.9		21.2		18.1		12.6		8.3		5.1		3.6

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		2.7		4.2		6.2		7.6		9		9.6		9.2		8		6.2		4.3		3		2.2

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		8.2		12.6		16.7		18.2		18.4		18.1		18.9		18		14.6		11.5		9		6.8

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		13.7		7.4		11.1		14.3		17.9		18.8		18.8		20.2		18		13.4		10.7		7.7		6

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		12.7		4.6		7.9		12.5		17.1		20		20.9		21.2		18.1		12.6		8.3		5.1		3.6

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		3		4.6		6.4		7.7		9.1		9.8		9.4		8.1		6.6		4.6		3.3		2.5

Maximum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		16.3		9.5		14.8		18.6		20.9		20.1		21.5		21.1		20.5		17.5		13		10.1		8.1

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		16.7		8.7		13.3		16.4		22.1		22		25.4		24.3		22.1		17.1		12.2		9		7.3

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		10.6		3.9		7		10.4		14		16.7		17.6		16.4		14.8		10.9		7.3		4.6		2.7

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		2.5		3.8		5.7		7.5		8.9		9.5		9.1		8		5.9		4		2.8		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		11.7		6.8		10.9		13.4		14.4		15.3		15.3		14.6		14.4		12.3		10		8		4.6

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		9.8		5.9		9.3		10.6		11.9		13		13.1		11.9		11.8		10.4		9		6.7		3.7