GRATON, CALIFORNIA

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Elevation: 83 meters Latitude: 38 26N Longitude: 122 53W

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CURRENT CONDITIONS

Sunrise/Set

09:20 am

10:58 pm
Local Time
3:00 am EDT
25 April, 2024

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MONTHLY - ALL WEATHER AVERAGES [ Show Summary ]

[ °F ] °C

TEMPERATURE

Average Temperature

Years on Record: 85

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		13.8		7.8		9.8		11.2		12.9		15.3		17.7		18.8		18.8		18.2		15.5		11.3		8.1

Average High Temperature

Years on Record: 85

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		21.8		13.3		16.2		18.4		20.8		23.7		26.9		28.5		28.6		28.1		24.6		18.6		13.8

Average Low Temperature

Years on Record: 85

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		5.8		2.2		3.4		4.1		4.9		6.8		8.5		9.2		9		8.3		6.5		4.1		2.4

Highest Recorded Temperature

Years on Record: 85

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		45		28.9		29.4		32.2		36.7		39.4		42.2		45		42.2		44.4		41.1		33.3		26.7

Lowest Recorded Temperature

Years on Record: 85

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		-10		-7.8		-8.3		-3.9		-3.9		-1.7		0.6		3.3		2.2		0.6		-5.6		-5.6		-10

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		3		---		---		---		---		0.1		0.6		0.6		0.7		0.9		0.2		---		---

Average Number of Days Above 90F/32C

Years on Record: 85

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		30		---		---		---		0.2		1.7		4.9		6.7		7.1		6.8		2.5		---		---

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		102.7		---		0.2		1.2		4		9.3		16.2		19.7		20.3		18.4		11.8		1.5		---

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		203.6		0.8		4.1		9.2		15		23.3		27.6		30.6		30.7		28.3		24.3		9.3		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		293.9		9.4		16.4		24.9		27.4		30.4		30		31		31		29.9		30.3		23.4		9.9

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		357.7		27.9		27.4		30.8		29.9		31		30		31		31		30		31		29.8		27.9

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		365		31		28		31		30		31		30		31		31		30		31		30		31

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		364.7		31		28		31		30		31		29.9		30.9		30.9		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		306		29.6		26.9		29.6		28.5		27		20.8		17.3		18.3		22.1		28		28.3		29.7

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		129.7		21.6		17.5		17.1		13.5		7		1.4		0.1		0.2		1.9		9.2		17.5		22.6

Average Number of Days Below 32F/0C

Years on Record: 85

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		41.4		12		6.9		3.6		1.6		0.1		---		---		---		---		0.6		5.4		11.3

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		0.4		0.1		---		---		---		---		---		---		---		---		---		---		0.3

PRECIPITATION

Average Precipitation

Years on Record: 85

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		1039		223		180		130		67		26		8		1		2		9		56		133		202

Average Number of Days With Precipitation

Years on Record: 85

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		76		13		11		11		7		4		1		---		1		2		5		9		12

Most Reported Precipitation in a Month

Years on Record: 85

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		641		599		631		518		206		153		58		49		69		107		293		433		641

Least Reported Precipitation in a Month

Years on Record: 85

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		---		11		3		---		---		---		---		---		---		---		---		---		---

Most Precipitation Reported in a Day

Years on Record: 85

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		176.5		145.3		176.5		164.8		101.6		59.2		53.9		31.2		43.4		106.2		137.2		140.7		170.2

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		54.6		9.8		8.9		8		4.6		2.2		0.6		---		0.2		0.8		3.1		7		9.4

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

Years on Record: 85

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		54		10		8		8		5		2		1		---		---		1		3		7		9

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

Years on Record: 85

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		28		6		5		4		2		1		---		---		---		---		1		4		5

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		28.5		5.4		5.1		4.3		1.8		1		0.2		---		---		0.2		1.3		3.9		5.3

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

Years on Record: 85

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		13		3		2		1		1		---		---		---		---		---		1		2		3

PRECIPITATION - SNOW

Most Snow Reported in a Month

Years on Record: 85

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		2.5		2.5		---		---		---		---		---		---		---		---		---		---		---

DEGREE DAYS

Heating Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		3100		564		420		374		281		171		67		31		26		53		164		374		575

Cooling Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		292		---		---		---		3		19		52		73		71		56		17		---		---

Growing Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		3035		19		54		117		180		314		435		507		510		453		318		109		20

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		10.3		11.3		12.5		13.7		14.8		15.3		15		14.1		12.8		11.6		10.5		10

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		17.8		8.1		11.1		16.3		22.1		26.2		28.1		26.7		23.7		19.7		14.4		9.5		7.4

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		2.9		3.8		5		5.9		6.5		6.6		6.7		6		4.8		3.8		3		2.6

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		19.6		13.1		15.1		19.7		22.8		23.9		24.2		23.6		23.2		22.5		19.9		14.9		12.7

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		23.1		14		16.1		21		26.4		30.2		32.7		30.5		28		26		22		16.3		13.8

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		17.8		8.1		11.1		16.3		22.1		26.2		28.1		26.7		23.7		19.7		14.4		9.5		7.4

Maximum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		5.7		3.1		4.2		5.8		6.9		8		8.2		8.1		7.3		5.9		4.3		3.4		2.8

Maximum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		23.3		17.8		21		25.9		25.6		26.5		26.3		26.7		25.8		24.8		22		19.5		18.3

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		29.9		20.8		25.4		31.7		32.2		36.8		38.4		38.7		33.8		30.4		25.3		23.3		21.9

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		5.7		8.2		13.3		19		21.9		24		22.8		19.9		16.5		12.8		7.6		5.7

Minimum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		3.8		2.4		2.8		3.4		4.8		5.2		5.4		4.9		4.9		4		3.4		2.3		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		15.7		7.9		10.2		15.3		19.3		20.1		20.8		20.3		19.4		18.2		17.2		11		8.8

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		16		6.9		8.8		14		19.7		21.4		23.9		22.3		20		18.5		17.8		10.7		8.2

NEARBY - MAP

NEARBY - LIST

Occidental, California (5 mi / 8 km)
Santa Rosa, California (5 mi / 9 km)
Guerneville, California (7 mi / 12 km)
Guernewood, California (7 mi / 12 km)
Fulton, California (9 mi / 16 km)

GEOBA.SE

Graton, California