CHALK RIVER, ONTARIO

Home > North America > Canada > Ontario
Elevation: 400 feet Latitude: 46 03N Longitude: 77 22W

WEATHER

Monthly - Summary

Nearby

Forecast

Monthly - All Data

Climate Summary

Daily Averages

Hourly Data

CURRENT CONDITIONS

Sunrise/Set

05:47 am

08:24 pm
Local Time
10:05 am EDT
6 May, 2024

PRINT THIS DATA

MONTHLY - ALL WEATHER AVERAGES [ Show Summary ]

[ °C ] °F

TEMPERATURE

Average Temperature

Years on Record: 26

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		42		10.8		15.5		26.8		41.9		54.4		64		68.5		66.3		57.8		45.6		33.2		19.6

Average High Temperature

Years on Record: 26

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		51.5		19.9		25.8		36.9		52.2		65.6		75.1		79.2		76.6		67.2		53.6		39.5		26.9

Average Low Temperature

Years on Record: 26

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		32.5		1.9		5.2		16.6		31.5		43.2		52.8		57.6		55.9		48.4		37.6		26.9		12.3

Highest Recorded Temperature

Years on Record: 46

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		102.9		52		59		75		89.1		93.2		96.8		102.9		99		94.1		85.1		72		58.1

Lowest Recorded Temperature

Years on Record: 46

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		-38.2		-38.2		-32.1		-25.6		-2.9		16		28.9		37.9		26.6		28.4		15.8		-5.8		-36.4

Average Number of Days Above 95F/35C

Years on Record: 26

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		0.5		---		---		---		---		---		---		0.3		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		10		---		---		---		0.1		1.3		2.4		3.8		2.1		0.2		---		---		---

Average Number of Days Above 86F/30C

Years on Record: 26

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		11		---		---		---		0.2		0.9		2.9		4.2		2.5		0.4		---		---		---

Average Number of Days Above 70F/21C

Years on Record: 26

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		109.1		---		---		0.2		2.8		11.8		23.4		29.1		26.7		12.7		2.4		---		---

Average Number of Days Above 50F/10C

Years on Record: 26

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		192.2		---		0.4		3.5		15.5		28.6		30		31		31		29.3		18.6		3.9		0.3

Average Number of Days Above 32F/0C

Years on Record: 26

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		281.2		5.5		8		20.5		29.2		31		30		31		31		30		30.9		23.4		10.8

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		191.9		31		28.1		29.9		21.3		7.2		0.3		---		0.1		2.6		14.6		26.1		30.7

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		170.4		30.6		27.5		28.4		17.2		4		---		---		0.1		0.9		9.4		22.6		29.7

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		134		29.5		26		23.5		10.3		0.8		---		---		---		---		3		14.6		26.3

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		72.3		22.7		19.4		11.6		0.7		---		---		---		---		---		---		2.8		15.1

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		25.9		11.2		7.7		2.6		---		---		---		---		---		---		---		0.1		4.3

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		2.9		1.8		0.7		---		---		---		---		---		---		---		---		---		0.4

PRECIPITATION

Average Precipitation

Years on Record: 26

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		33.8		2.2		1.7		2.2		2.3		3.4		3.4		3.3		3.2		3.5		3.3		3		2.3

Average Number of Days With Precipitation

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		158.5		15		10.8		11.5		10.7		12.6		13.9		13.4		13.2		14.8		13.5		14.6		14.4

Most Precipitation Reported in a Day

Years on Record: 46

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		2.8		1.1		1.4		1.9		1.4		2.3		2.8		2.7		2.8		2.6		1.7		1.6		1.1

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

Years on Record: 26

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		165.3		15.5		11.8		11.3		11.7		13.6		13.7		13.9		12.9		14.4		15		15.8		15.8

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

Years on Record: 26

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		55.7		3.9		2.9		3.9		4.2		5.3		5.3		5.3		4.8		5.5		5.4		5.2		4.1

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

Years on Record: 26

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		26.4		1.4		1.2		1.7		1.8		3.1		2.8		2.4		2.7		2.9		3		2.3		1.3

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

Years on Record: 26

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		3.8		---		0.1		0.1		0.2		0.5		0.6		0.5		0.6		0.4		0.5		0.3		0.1

PRECIPITATION - RAIN

Average Rainfall

Years on Record: 26

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		26.9		0.6		0.4		1.1		2		3.3		3.4		3.3		3.2		3.5		3.1		2.1		0.7

Average Number of Rainy Days

Years on Record: 26

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		115.9		2.7		2.4		4.8		9.7		13.6		13.7		13.9		12.9		14.4		14.3		9.7		3.9

Most Rain Reported in a Day

Years on Record: 46

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		2.8		1.1		1		1.4		1.4		2.3		2.8		2.7		2.8		2.6		1.7		1.5		0.9

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

Years on Record: 26

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		43.8		1.2		0.7		2		3.5		5.3		5.3		5.3		4.8		5.5		5.2		3.5		1.5

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

Years on Record: 26

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		22.6		0.5		0.4		1		1.5		3		2.8		2.4		2.7		2.9		2.8		1.9		0.6

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

Years on Record: 26

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		3.5		---		---		0.1		0.1		0.4		0.6		0.5		0.6		0.4		0.4		0.2		---

PRECIPITATION - SNOW

Average Snowfall

Years on Record: 26

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		71.7		16.7		13.5		11.1		3.7		0.7		---		---		---		---		1.4		8.9		15.8

Average Number of Days With Snow

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		53.6		13.4		9.7		7.6		2.7		0.1		---		---		---		---		0.8		7.2		11.9

Average Snow Cover

Years on Record: 8

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		4.1		12.1		16		14.3		0.4		---		---		---		---		---		---		0.5		5.2

Average Snow Cover at Month End

Years on Record: 7

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		3.5		14.8		17.1		2.5		---		---		---		---		---		---		---		1.9		6.5

Deepest Snow Cover Reported

Years on Record: 8

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		26.8		21.7		25.2		26.8		11.8		0.4		---		---		---		---		---		7.1		16.9

Most Snow Reported in a Day

Years on Record: 46

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		15.8		11.2		14.1		15.8		10.2		5.1		---		---		---		0.1		6.3		12.4		11

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

Years on Record: 26

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		56.5		13.9		10.5		7.5		2.9		0.3		---		---		---		---		1		7.7		12.7

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

Years on Record: 26

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		12.5		3		2.3		2.1		0.5		0.1		---		---		---		---		0.3		1.4		2.9

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

Years on Record: 26

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		3.6		0.9		0.7		0.5		0.2		0.1		---		---		---		---		0.1		0.4		0.7

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

Years on Record: 26

		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: 5

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		122.1		31		28.3		28.8		3.4		0.1		---		---		---		---		---		6		24.6

Avg. # of Days w/Snow Depth Above 2in/5cm

Years on Record: 5

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		119.1		31		28.3		28.8		2.6		---		---		---		---		---		---		4.5		24

Av. # of Days w/Snow Depth Above 3.9in/10cm

Years on Record: 5

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		112.3		30.8		28.3		28.8		1.4		---		---		---		---		---		---		2.5		20.6

Av. # of Days w/Snow Depth Above 7.8in/20cm

Years on Record: 5

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		86.2		26.3		28.3		27.5		0.8		---		---		---		---		---		---		---		3.4

DEGREE DAYS

Heating Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		4846		933.3		785		651.1		388.4		179.6		54.6		13.9		32.9		140.2		332.5		530.6		803.9

Cooling Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		192.4		---		---		---		0.8		11.4		38.4		76		55.6		9.8		0.4		---		---

Growing Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		1796.4		---		---		---		---		145.7		405		558		486.7		201		---		---		---

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		9.7		10.9		12.5		14.1		15.6		16.3		15.9		14.6		13		11.4		10		9.3

SOLAR RADIATION

Average Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		3.5		1.6		2.6		3.8		4.7		5.1		5.6		5.5		4.8		3.5		2.3		1.4		1.2

Average Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.7		0.9		1.3		1.8		1.9		2.5		2.6		2.5		2.2		1.7		1.2		0.8		0.7

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		3.9		2.7		3.9		4.8		4.9		4.7		4.9		4.9		4.7		4		3		2.2		2.1

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		3.6		2.4		3.5		4.2		5		4.4		4.8		4.9		4.3		3.5		2.7		1.9		1.9

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		3.5		1.6		2.6		3.8		4.7		5.1		5.6		5.5		4.8		3.5		2.3		1.4		1.2

Maximum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.8		1		1.4		1.9		2		2.5		2.7		2.6		2.3		1.8		1.3		0.9		0.9

Maximum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		4.6		3.2		4.5		5.5		5.8		5.7		5.5		5.9		5.4		4.7		3.6		2.5		2.8

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		4.6		2.9		4.2		4.8		6.2		6.2		6.1		6.8		5.7		4.5		3.4		2.1		2.6

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		2.9		1.4		2.1		3.3		3.7		3.8		4.6		5		3.9		2.9		1.8		1.2		1

Minimum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.6		0.8		1.1		1.7		1.8		2.4		2.6		2.5		2.2		1.6		1		0.8		0.6

Minimum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		3.2		2.4		3.1		4.2		3.8		3.5		4.1		4.4		3.8		3.1		2.3		1.8		1.6

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		2.6		2		2.7		3.5		3.4		2.4		3.2		3.9		2.9		2.4		2		1.5		1.3

NEARBY - MAP

NEARBY - LIST

Deep River, Quebec (3 mi / 5 km)
Petawawa National Forestry Institute, Ontario (3 mi / 5 km)
Petawawa Airport, Ontario (4 mi / 6 km)
Petawawa, Ontario (6 mi / 10 km)
Sheenboro, Quebec (6 mi / 9 km)

GEOBA.SE

Chalk River, Ontario