THUNDER BAY, ONTARIO

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Elevation: 199 meters Latitude: 48 22N Longitude: 089 19W

WEATHER

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CURRENT CONDITIONS

Sunrise/Set

06:33 am

09:14 pm
Local Time
2:09 am EDT
3 May, 2024

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MONTHLY - ALL WEATHER AVERAGES [ Show Summary ]

[ °F ] °C

TEMPERATURE

Average Temperature

Years on Record: 62

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		3		-14		-12		-6		1		7		13		17		15		11		5		-3		-10

Average High Temperature

Years on Record: 62

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		7		-8		-6		---		6		13		19		23		21		16		10		1		-5

Average Low Temperature

Years on Record: 62

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		-3		-20		-18		-12		-3		2		8		11		9		6		1		-7		-15

Highest Recorded Temperature

Years on Record: 80

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		40		8		11		22		28		32		36		40		35		31		28		20		12

Lowest Recorded Temperature

Years on Record: 80

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		-41		-41		-40		-36		-23		-8		-2		1		---		-8		-15		-30		-38

Average Number of Days Above 95F/35C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		0.1		---		---		---		---		---		---		0.1		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		2.6		---		---		---		---		0.3		0.5		1.1		0.6		0.1		---		---		---

Average Number of Days Above 70F/21C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		65.5		---		---		---		0.5		4.4		11.8		22.8		19.9		5.4		0.6		0.1		---

Average Number of Days Above 50F/10C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		169.8		---		0.1		0.5		8.6		24.6		29.2		31		31		27.8		14.8		2.2		---

Average Number of Days Above 32F/0C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		260.3		3.2		5.4		15.2		27.8		31		30		31		31		30		30.7		18.6		6.5

Average Number of Days Below 35F/2C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		216.9		31		28.3		30.8		26.8		13.2		1.8		---		0.2		6.1		19.7		28.2		30.9

Average Number of Days Below 32F/0C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		195.9		31		28.1		30.1		22.4		8.1		0.5		---		---		3.2		15.2		26.7		30.6

Average Number of Days Below 28F/-2C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		162.1		30.6		27.1		27.4		14.1		2.9		---		---		---		0.6		8.3		21.8		29.4

Average Number of Days Below 10F/-12C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		95.7		26.7		21.5		15.4		2.3		---		---		---		---		---		0.2		7.5		22

Average Number of Days Below 0F/-17C

Years on Record: 9

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		62		20		17		6		---		---		---		---		---		---		---		2		15

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

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		42.3		15.7		11.4		4.1		---		---		---		---		---		---		---		0.9		10.2

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

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		5.5		2.8		1.7		0.1		---		---		---		---		---		---		---		---		0.9

PRECIPITATION

Average Precipitation

Years on Record: 59

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		600		20		10		20		30		50		70		90		70		80		60		30		20

Average Number of Days With Precipitation

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		119.1		8.9		7.3		8.4		6.6		10.5		12.4		11.6		13		13.4		10.4		8.1		8.4

Most Precipitation Reported in a Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		125.5		49.5		27.9		31		43.9		55.4		41.4		71.4		58.2		125.5		44.5		45		35.6

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

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		45.4		2.8		1.6		3		2.4		4.1		5.6		6		5		4.6		4.1		3.1		3.2

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

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		20.7		0.8		0.5		1.1		0.9		2		2.7		3		2.4		2.5		1.6		1.7		1.4

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

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		4.3		0.2		---		0.2		---		0.3		0.5		0.7		0.8		0.9		0.2		0.4		0.1

PRECIPITATION - RAIN

Average Rainfall

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		557.9		3		2.3		15.4		24.5		66.5		81.9		87.4		88.3		91.3		55.7		36.6		5

Average Number of Rainy Days

Years on Record: 59

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		59		2		2		3		4		6		6		7		6		7		5		4		3

Most Rain Reported in a Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		126		50		26		31		44		55		41		71		58		126		45		45		24

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

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		34.7		0.1		0.2		1		1.8		4.1		5.6		6		5		4.6		3.9		2.1		0.3

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

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		17.1		---		---		0.6		0.8		2		2.7		3		2.4		2.5		1.6		1.2		0.2

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

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		3.8		---		---		0.1		---		0.3		0.5		0.7		0.8		0.9		0.2		0.3		---

PRECIPITATION - SNOW

Average Snowfall

Years on Record: 59

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		108		22		18		20		9		1		---		---		---		---		3		14		19

Average Number of Days With Snow

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		36.9		8.8		7.1		6.4		1.6		0.2		---		---		---		0.1		0.9		4		7.7

Deepest Snow Cover Reported

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		79		79		54		67		37		---		---		---		---		---		4		31		30

Most Snow Reported in a Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		40.6		25		27.9		30		31		6		---		---		---		4		11.7		40.6		35.6

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

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		10.5		2.7		1.4		2		0.5		---		---		---		---		---		0.1		0.9		2.9

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

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		3.2		0.8		0.5		0.5		---		---		---		---		---		---		---		0.3		1.2

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

Years on Record: 30

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

HUMIDITY

Average Relative Humidity

Years on Record: 10

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		79		84		83		79		72		70		76		78		79		82		80		82		85

Average Dew Point

Years on Record: 10

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		-1		-15		-15		-8		-2		2		9		13		12		7		2		-5		-12

DEGREE DAYS

Heating Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		3154.1		559		465.5		409.2		256.9		156.1		77.8		25.2		38.3		110.6		217.6		338.9		499

Cooling Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		31.4		---		---		---		---		0.7		3.3		14.8		10.8		1.8		---		---		---

Growing Degree Days

Years on Record: 62

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		562.8		---		---		---		---		---		116.7		223.9		172.2		50		---		---		---

SKY CONDITIONS

Average Length of Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		12.8		9.5		10.8		12.5		14.3		15.9		16.7		16.3		14.8		13.1		11.3		9.8		9

SOLAR RADIATION

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		8		12.6		17		19.8		20.8		20.3		17.6		12.6		8.1		4.7		3.7

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		2.8		4.2		6.2		7.6		8.9		9.5		9.2		8.1		6.2		4.2		2.8		2.3

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		8.1		12.4		16.6		18		18.2		18		18		17.4		14.4		11.1		7.8		6.7

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		13.1		7.2		10.8		14.2		17.3		18.4		18.5		18.5		16.9		13.1		10.2		6.5		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		4.7		8		12.6		17		19.8		20.8		20.3		17.6		12.6		8.1		4.7		3.7

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		3.2		4.4		6.5		7.8		9.1		9.7		9.3		8.2		6.5		4.8		3.1		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		16.2		9.8		13.6		18.7		21.8		21.7		20.1		20.3		20.7		16.9		13.6		9.2		7.8

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		16.4		9.1		12.1		16.5		23.1		24.5		22.6		22.8		22.3		16.2		12.9		7.7		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		10.6		4.2		6.8		11		13.5		16.8		17.4		17.1		15.9		10.2		6.8		3.7		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		2.6		3.7		5.9		7.5		8.8		9.4		9.1		8		5.8		3.8		2.5		2

Minimum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		11.5		7		10.4		14.2		13.7		15.3		15.1		15.2		15.6		11.2		9		5.9		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		9.6		6.1		8.8		11.4		10.8		13		12.7		12.9		13.7		8.9		7.9		4.5		4.1

NEARBY - MAP

NEARBY - LIST

Thunder Bay Airport, Ontario (0 mi / 0 km)
Moose Hill, Ontario (13 mi / 20 km)
Kakabeka Falls, Ontario (14 mi / 22 km)
Flint, Ontario (16 mi / 27 km)
Whitefish Lake, Ontario (28 mi / 45 km)

GEOBA.SE

Thunder Bay, Ontario