CHINOOK, MONTANA

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Elevation: 732 meters Latitude: 48 35N Longitude: 109 12W

WEATHER

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CURRENT CONDITIONS

Sunrise/Set

08:05 am

10:23 pm
Local Time
10:59 am EDT
25 April, 2024

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MONTHLY - ALL WEATHER AVERAGES [ Show Summary ]

[ °F ] °C

TEMPERATURE

Average Temperature

Years on Record: 116

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		5.9		-9.9		-7.3		-1.4		6.9		12.8		17.2		21		19.6		13.5		7.3		-1.2		-7.2

Average High Temperature

Years on Record: 116

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		13.8		-3.3		-0.4		5.7		14.8		20.9		25.1		30.2		29		22.5		15.8		5.9		-0.6

Average Low Temperature

Years on Record: 116

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		-1.9		-16.5		-14.2		-8.5		-1.1		4.7		9.3		11.8		10.2		4.5		-1.1		-8.3		-13.8

Highest Recorded Temperature

Years on Record: 116

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		43.3		19.4		24.4		27.8		34.4		36.7		42.8		43.3		42.8		40		32.2		27.8		21.1

Lowest Recorded Temperature

Years on Record: 116

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		-46.1		-45.6		-46.1		-38.9		-26.1		-15.6		-2.2		0.6		-1.7		-10.6		-31.1		-38.9		-45.6

Average Number of Days Above 100F/38C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		1.1		---		---		---		---		---		0.2		0.4		0.5		---		---		---		---

Average Number of Days Above 90F/32C

Years on Record: 116

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		26		---		---		---		0.1		0.9		2.9		11.4		9.1		1.6		---		---		---

Average Number of Days Above 80F/26C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		69.3		---		---		---		0.7		4.3		11		22.9		21.8		7.8		0.8		---		---

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		125.7		---		0.1		0.7		5.7		14.1		23.3		29.8		28.8		17.4		5.4		0.4		---

Average Number of Days Above 60F/15C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		179.6		0.4		1.1		4.3		14.6		24.7		28.8		30.9		30.7		25.8		15.5		2.7		0.2

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		229.4		2.9		4.7		12.7		23.9		29.3		29.9		31		30.9		28.7		24		8.5		2.8

Average Number of Days Above 40F/4C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		280.1		10.5		10.8		21.1		28		30.7		30		31		31		29.8		28.8		18.2		10.1

Average Number of Days Below 70F/21C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		365		31		28		31		30		31		30		31		31		30		31		30		31

Average Number of Days Below 60F/15C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		356.5		31		28		31		30		30.9		28.7		27.4		27.5		29.9		31		30		31

Average Number of Days Below 50F/10C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		301.9		31		28		31		29.8		27.4		15.1		8.1		12.3		27.4		30.9		30		31

Average Number of Days Below 40F/4C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		236.4		30.8		27.9		30.8		26.7		13.2		1.8		0.1		1.3		14.7		28.6		29.6		30.9

Average Number of Days Below 32F/0C

Years on Record: 116

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		190.1		30		27.3		28.5		18.3		4.9		0.2		---		0.1		4.9		18.7		27.3		29.9

Average Number of Days Below 20F/-6C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		110.9		25.6		21		13.9		2.7		0.2		---		---		---		0.2		4.9		17.5		24.9

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		62.9		18.6		13		5.4		0.2		---		---		---		---		---		0.9		8		16.8

Average Number of Days Below 0F/-17C

Years on Record: 116

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		41.2		13.6		9.5		4.4		0.2		---		---		---		---		---		0.2		3.4		9.9

PRECIPITATION

Average Precipitation

Years on Record: 116

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		326		14		9		13		24		50		70		39		31		32		17		12		13

Average Number of Days With Precipitation

Years on Record: 116

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		68		5		4		4		5		9		10		7		6		6		4		4		4

Most Reported Precipitation in a Month

Years on Record: 116

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		224		53		31		48		95		182		176		132		139		224		65		57		54

Least Reported Precipitation in a Month

Years on Record: 116

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		---		---		---		---		---		4		---		---		---		---		---		---		---

Most Precipitation Reported in a Day

Years on Record: 116

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		139.7		27.9		25.1		25.1		53.6		59.9		90.2		80		83.6		139.7		27.9		26.7		25.1

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

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		36.2		1.7		1.5		2.3		2.6		5.3		6		3.9		3.3		3.6		2.3		2.1		1.6

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

Years on Record: 116

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		35		2		1		2		3		5		6		4		3		3		2		2		2

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

Years on Record: 116

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		6		---		---		---		---		1		2		1		1		1		---		---		---

Avg. No. of Days w/Precip. Above 0.5in/13mm

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		6.5		0.1		---		0.1		0.4		1.5		1.4		1.1		0.8		0.7		0.2		0.1		0.1

PRECIPITATION - SNOW

Average Snowfall

Years on Record: 116

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		80.3		17.3		12.2		13.2		9.1		0.8		---		0.2		0.2		0.5		1.8		9.7		15.2

Average Number of Days With Snow

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		18.7		4		3.7		3.1		0.5		0.3		---		---		---		---		0.5		2.9		3.7

Average Snow Cover

Years on Record: 51

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		2		7		5		2		---		---		---		---		---		---		---		2		2

Most Snow Reported in a Month

Years on Record: 116

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		314.2		74.4		44.5		55.6		314.2		17.8		8.9		16.3		25.9		15.2		27.9		43.2		58.4

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

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		13.9		3.2		2.6		2.2		0.4		0.3		---		---		---		---		0.3		2.1		2.8

Avg. No. of Days w/Snow Above 3in/7.5cm

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		3.9		0.9		0.8		0.6		0.2		0.1		---		---		---		---		0.1		0.4		0.8

Avg. No. of Days w/Snow Above 5in/12.7cm

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		1.3		0.4		0.2		0.2		0.1		---		---		---		---		---		0.1		0.1		0.2

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		0.1		---		---		---		---		---		---		---		---		---		---		---		0.1

Avg. # of Days w/Snow Depth Above 1in/2.5cm

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		55.1		16.3		14.4		8.9		0.8		0.2		---		---		---		---		0.5		4.6		9.4

Avg. # of Days w/Snow Depth Above 3in/7.5cm

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		38.1		12.9		8.9		6.9		0.2		0.1		---		---		---		---		0.2		2.3		6.6

Avg. # of Days w/Snow Depth Above 5in/12.7cm

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		28.7		11		7.4		4.8		0.1		---		---		---		---		---		0.1		1		4.3

Avg. # of Days w/Snow Depth Above 10in/25cm

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		14.9		5.2		4.6		2.4		---		---		---		---		---		---		---		0.5		2.2

DEGREE DAYS

Heating Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		8362		1508		1235		1023		602		328		106		25		50		283		665		1084		1452

Cooling Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		391		---		---		---		1		12		61		159		143		15		---		---		---

Growing Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		2065		---		---		3		43		194		407		600		559		217		38		2		---

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		9.4		10.8		12.5		14.3		15.9		16.8		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		13.1		4.2		7.3		11.6		17.4		20.5		22.1		23.3		19.6		14.2		9		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		2.6		4		5.9		7.5		8.9		9.6		9.3		8		6.5		4.6		3		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		14.6		7.4		11.5		14.7		18.4		18.9		19.1		20.7		19.6		16.6		12.6		8.9		6.9

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		14.5		6.6		10		12.6		18.4		19.8		20.8		23.5		20.6		15.9		11.8		7.7		6.1

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		13.1		4.2		7.3		11.6		17.4		20.5		22.1		23.3		19.6		14.2		9		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		2.8		4.4		6.5		7.7		9.1		9.8		9.8		8.3		7.1		4.8		3.4		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		16.9		8.4		13.5		18.1		21		21.5		21.9		23.1		22		20.2		13.8		10.8		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		17.6		7.6		12		17.1		22.3		24.3		26.1		27.1		24.1		20.3		13.2		9.4		7.2

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		11		3.5		5.9		10.2		15.1		16.6		18.7		18.6		17.2		10.6		8		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		2.3		3.4		5.7		7.5		8.9		9.5		9.1		8		5.8		4.2		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		11.9		5.9		8.9		12.7		15.7		15.2		16.2		16.5		17.1		11.8		11		6.8		5.4

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		10.5		4.9		7.3		10.2		13.9		12.8		14.9		15.6		16.4		9.8		10.1		5.7		4.6

NEARBY - MAP

NEARBY - LIST

North Chinook Reservoir, Montana (15 mi / 24 km)
Harlem, Montana (19 mi / 31 km)
Hays, Montana (19 mi / 31 km)
Cleveland, Montana (21 mi / 35 km)
Zurich, Montana (21 mi / 34 km)

GEOBA.SE

Chinook, Montana