ROY, UTAH

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Elevation: 1301 meters Latitude: 41 14N Longitude: 112 02W

WEATHER

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Hourly Data

CURRENT CONDITIONS

Sunrise/Set

08:23 am

10:26 pm
Local Time
10:11 pm EDT
2 May, 2024

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MONTHLY - ALL WEATHER AVERAGES [ Show Summary ]

[ °F ] °C

TEMPERATURE

Average Temperature

Years on Record: 86

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		10.6		-2.8		0.4		5.1		10		14.9		19.7		24.4		23.2		17.7		11.3		3.8		-1.1

Average High Temperature

Years on Record: 86

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		17.7		2.4		5.9		11.3		16.9		22.6		28		33.4		32.2		26.4		19.2		9.8		3.9

Average Low Temperature

Years on Record: 86

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		3.4		-7.9		-5		-1.1		3		7.3		11.4		15.4		14.3		9		3.4		-2.1		-6.2

Highest Recorded Temperature

Years on Record: 86

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		42.2		17.2		20		25.6		30.6		35.6		39.4		42.2		40		37.8		35		23.9		17.8

Lowest Recorded Temperature

Years on Record: 86

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		-32.2		-32.2		-29.4		-15.6		-15		-3.9		---		3.9		1.7		-4.4		-7.8		-25.6		-28.3

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		5.9		---		---		---		---		---		0.3		4.2		1.4		---		---		---		---

Average Number of Days Above 90F/32C

Years on Record: 86

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		52.5		---		---		---		---		0.5		7.7		22.6		18		3.6		---		---		---

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		112.9		---		---		---		1.5		9.7		21.3		29.9		30.2		17.7		2.5		---		---

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		157.8		---		---		1.4		8.6		20.2		27.7		30.9		31		26.1		11.2		0.7		---

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		205.3		---		0.8		9		18.7		28		29.9		31		31		29.1		22.5		5.1		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		253.2		1.9		5.9		20.3		26.6		30.6		30		31		31		29.8		29.1		14.9		2.1

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		306.3		10.5		17.4		28.4		29.8		31		30		31		31		30		30.7		25.2		11.2

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		361.8		31		28		31		30		31		29.5		28.9		30.4		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		324.2		31		28		31		29.8		29.9		24		14		16.8		27.7		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		257.2		31		28		30.9		28.1		21.4		8.4		1		1.8		16.3		29.4		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		192		30.9		27.6		27.4		18		7.3		0.5		---		---		3.5		18		28		30.7

Average Number of Days Below 32F/0C

Years on Record: 86

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		137.5		28.7		24		19.5		8		1.2		---		---		---		0.5		6.3		21.4		27.9

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		44.3		15.3		9.4		2.1		0.1		---		---		---		---		---		0.1		3.8		13.5

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		12.6		6		2.8		0.2		---		---		---		---		---		---		---		0.6		3

Average Number of Days Below 0F/-17C

Years on Record: 86

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		4.3		2.4		0.9		---		---		---		---		---		---		---		---		0.1		0.9

PRECIPITATION

Average Precipitation

Years on Record: 86

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		433		40		37		43		52		47		33		14		20		30		41		38		38

Average Number of Days With Precipitation

Years on Record: 86

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		72		8		7		8		8		7		5		3		4		4		5		6		7

Most Reported Precipitation in a Month

Years on Record: 86

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		156		129		156		113		143		139		111		48		84		140		146		92		136

Least Reported Precipitation in a Month

Years on Record: 86

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		---		---		---		---		3		---		---		---		---		---		---		---		---

Most Precipitation Reported in a Day

Years on Record: 86

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		65.8		38.1		53.3		47.5		39.4		49.5		46.5		32.5		50		65.8		47		36.8		38.1

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		44.8		5		3.8		5.1		4.4		4.9		2.4		1.6		1.9		3.2		3.5		4.5		4.5

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

Years on Record: 86

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		44		5		4		5		5		4		3		2		2		3		3		4		4

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

Years on Record: 86

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		10		1		1		1		1		1		1		---		---		1		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		12		0.8		0.9		1.3		1.3		1.5		1		0.3		0.7		0.9		1.5		1		0.8

Average Precipitable Water

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm.		1		0.7		0.7		0.7		0.8		1.1		1.3		1.6		1.6		1.3		1		0.8		0.7

PRECIPITATION - SNOW

Average Snowfall

Years on Record: 86

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		67.6		26.9		12.4		7.9		1.3		---		---		---		---		---		0.5		6.1		12.4

Average Number of Days With Snow

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		5.1		2		0.9		0.2		---		---		---		---		---		---		0.1		0.5		1.4

Average Snow Cover

Years on Record: 74

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

Most Snow Reported in a Month

Years on Record: 86

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		118.1		118.1		49.5		49.5		22.9		7.6		---		---		---		---		7.6		63.5		80

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		4.2		1.6		0.6		0.2		---		---		---		---		---		---		0.1		0.4		1.3

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		2.5		1.1		0.4		0.1		---		---		---		---		---		---		---		0.3		0.6

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		1.1		0.4		0.2		---		---		---		---		---		---		---		---		0.2		0.3

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

HUMIDITY

Average Relative Humidity

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		52.7		75.1		69		56.4		50.9		46.9		40.3		32.6		34.4		41		51.8		62.7		72.1

DEGREE DAYS

Heating Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		5777		1145		896		687		429		200		45		3		4		93		399		774		1103

Cooling Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		1016		---		---		---		5		39		174		380		324		90		4		---		---

Growing Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		3259		---		1		21		114		317		579		843		786		452		137		9		---

SKY CONDITIONS

Average Length of Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		12.7		10.1		11.2		12.5		13.9		15.1		15.7		15.3		14.2		12.9		11.5		10.4		9.8

Average Total Sky Cover

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		43.5		64		58.6		51.9		53.4		44.5		31		19.2		22.2		26.6		38.2		51.1		61.1

Average Opaque Sky Cover

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		39		59.2		55.2		48.1		48.5		38.9		25.5		14.3		17.8		23.3		35		46.4		56.8

WIND

Average Wind Speed

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
km/h		10.5		8.4		9.2		11.8		12.7		11.6		11.5		10.8		11.4		10.5		10.1		9.3		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		16.8		7.8		11		15.8		20.1		23.6		26.9		26.3		22.6		18.5		13.2		8.3		6.9

Average Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		4.8		2.4		3.4		4.7		6.2		7.3		7.1		6.8		6.2		4.7		3.5		2.7		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		19.4		14.8		16.8		20.1		20.9		21.7		23.2		23.3		22.4		21.7		19.3		14.4		14

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		22.4		15.9		18		21.6		23.3		25.7		30.7		30.4		26.8		25.1		21.4		15.4		15

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		16.8		7.8		11		15.8		20.1		23.6		26.9		26.3		22.6		18.5		13.2		8.3		6.9

Maximum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		5.4		2.7		3.8		5.3		7		8.1		7.9		7.6		6.7		5.7		4		3		2.4

Maximum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		22.4		18.6		19.8		22.6		24		24.1		26		25.2		24.7		24.9		24.1		16.8		18.2

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		27.9		21.2		23		25.3		29.4		31.4		38.3		35.3		32		30.9		28.8		19.1		20.8

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		14.8		6.5		9.2		13.3		17.2		20.5		24.9		24.2		21.2		15.8		11.6		6.9		5.9

Minimum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		4		1.9		2.8		4.2		5.2		6.3		5.5		5.8		5.2		3.8		2.5		2.5		1.7

Minimum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		16.4		11.2		13.1		16.1		17.6		18.8		21.6		21.5		20.9		18		16.2		11		11

Minimum 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		11		12.6		15.5		17.1		19.4		26.3		25.9		23.7		18.5		16.7		10.7		11

NEARBY - MAP

NEARBY - LIST

Eden, Utah (4 mi / 7 km)
Hill Air Force Base, Utah (6 mi / 9 km)
Riverdale, Utah (6 mi / 9 km)
Clearfield, Utah (8 mi / 13 km)
Ogden, Utah (8 mi / 14 km)

GEOBA.SE

Roy, Utah