ADAK ISLAND, ALASKA

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Elevation: 13 feet Latitude: 51 53N Longitude: 176 39W

WEATHER

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CURRENT CONDITIONS

Sunrise/Set

12:24 pm

03:03 am
Local Time
4:33 am EDT
26 April, 2024

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MONTHLY - ALL WEATHER AVERAGES [ Show Summary ]

[ °C ] °F

TEMPERATURE

Average Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		41.1		32.7		33.5		35		37.6		41.4		45.5		50		52		48.5		43.7		38.1		34.3

Average High Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		45.7		37.3		38		39.4		42		45.8		49.8		54.6		57.2		53.1		48.5		42.8		38.9

Average Low Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		36.5		28		29		30.6		33.1		37		41.2		45.3		46.9		43.9		39		33.4		29.6

Highest Recorded Temperature

Years on Record: 46

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		75		50		54		57		56		65		67		73		75		71		61		57		55

Lowest Recorded Temperature

Years on Record: 46

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		3		3		3		12		20		20		29		33		33		28		22		12		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		0.7		---		---		---		---		---		---		0.3		0.4		0.1		---		---		---

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		10.8		---		---		---		---		---		0.2		3.3		6.4		0.9		---		---		---

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		109.9		---		0.1		0.2		0.8		3.4		12.6		27.4		30.2		24.6		9.6		1		0.1

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		271.4		8		9		14.7		21.5		30.4		30		31		31		30		30.6		22.9		12.5

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		365		31		28		31		30		31		30		31		31		30		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		355.4		31		28		31		30		31		29.9		29		25.7		27.9		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		238.8		30.6		27.9		30.7		29.6		27.2		9.6		1.1		1		5.5		17.4		27.9		30.2

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		102.1		22.7		18		16.5		10.6		1.3		0.2		---		---		0.3		2		11.4		19.1

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		9.1		3.2		2.6		1.3		---		---		---		---		---		---		---		---		2.1

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		0.2		0.1		---		---		---		---		---		---		---		---		---		---		0.1

PRECIPITATION

Average Precipitation

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in.		54.7		6.1		4.1		5		3.1		2.9		2.8		2.6		4.2		5.5		6.2		6.3		6

Average Number of Days With Precipitation

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		266.3		25.7		22.3		25.4		21.6		22.3		16.4		15.5		19.4		21.6		24.9		24.4		26.8

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		142.9		14.7		11.9		13.4		9.6		9.2		7.3		6		10.2		12.7		15.2		15.7		17

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		29		3.2		1.9		2.2		1.1		0.7		1.1		1.4		2.5		3.7		4.1		3.8		3.3

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		6.2		0.8		0.2		0.4		0.3		0.1		0.3		0.2		0.6		1		0.7		1		0.6

PRECIPITATION - RAIN

Most Rain Reported in a Month

Years on Record: 47

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in.		92.7		14.4		9.6		13.3		10.2		16.1		9.4		6.1		9.6		11.3		13.3		13.7		13.6

Least Recorded Rainfall

Years on Record: 47

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in.		37.4		1.7		1.8		1.4		1.3		0.6		---		0.7		1		2.5		2.6		2.7		2.6

PRECIPITATION - SNOW

Average Snowfall

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in.		102.4		24.8		17.3		19.3		7.7		1.3		---		---		---		---		0.6		10.8		20.6

Average Number of Days With Snow

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		91.2		18.2		15.4		16.4		11.6		2.6		---		---		---		0.1		1		10		15.9

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		33.3		7.7		5.6		5.9		2.3		0.3		---		---		---		---		0.5		3.6		7.4

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		6.7		2		1.1		1.2		0.3		---		---		---		---		---		---		0.7		1.4

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		2.4		0.7		0.4		0.5		---		---		---		---		---		---		---		0.3		0.5

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		0.2		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		66.3		17.9		16.2		12.1		2.7		---		---		---		---		---		0.1		3.7		13.6

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		40		12		11		8.1		1.5		---		---		---		---		---		0.1		0.9		6.4

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		26.5		7.2		8.6		6.4		0.6		---		---		---		---		---		---		0.1		3.6

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		12.6		2.7		4.5		4.5		0.1		---		---		---		---		---		---		---		0.8

HUMIDITY

Average Morning Relative Humidity

Years on Record: 38

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		83		80		80		81		80		83		86		90		89		85		81		80		81

Average Evening Relative Humidity

Years on Record: 38

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		77		78		76		76		74		75		77		80		80		77		75		76		79

Average Dew Point

Years on Record: 37

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		35		27		27		29		31		34		39		44		47		43		37		31		29

DEGREE DAYS

Heating Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		8737		1003		882		930		823		732		585		467		402		495		659		807		953

Growing Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		142		---		---		---		---		---		3		37		78		22		1		---		---

SKY CONDITIONS

Average Length of Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		12.9		9.1		10.6		12.5		14.6		16.5		17.4		16.9		15.1		13.1		11.1		9.4		8.5

Average Number of Days With Fog

Years on Record: 39

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		169		8		7		9		11		14		19		26		25		18		13		10		9

WIND

Average Wind Speed

Years on Record: 37

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mph		16		16		14		18		18		17		13		14		14		14		16		18		17

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		2.6		0.8		1.5		2.6		3.7		4.3		4.3		4		3.4		2.9		2		1		0.6

Average Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.6		0.5		0.9		1.5		2.1		2.5		2.7		2.5		2.2		1.6		1.1		0.6		0.4

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		2.8		1.4		2.3		3.1		3.8		3.9		3.7		3.5		3.3		3.3		2.8		1.7		1.2

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		2.3		1.2		2		2.6		3.2		3.1		2.8		2.5		2.3		2.8		2.5		1.5		1.1

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		2.6		0.8		1.5		2.6		3.7		4.3		4.3		4		3.4		2.9		2		1		0.6

Maximum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.6		0.6		1		1.6		2.1		2.6		2.8		2.7		2.3		1.6		1.2		0.7		0.5

Maximum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		3.4		1.6		2.7		3.5		4.7		4.6		4.4		4.2		4.4		3.8		3.1		1.9		1.3

Maximum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		3.1		1.5		2.5		3.1		4.6		4.3		3.9		3.7		4		3.4		2.9		1.7		1.2

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		2.2		0.7		1.3		2.2		3.1		3.6		3.5		3.4		3		2.4		1.7		0.8		0.6

Minimum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.5		0.5		0.8		1.4		2		2.4		2.4		2.4		2.1		1.5		1		0.6		0.4

Minimum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		2.4		1.1		1.8		2.6		3.1		3.2		3		3		2.8		2.7		2.4		1.3		1.1

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
kWh/m2		1.7		0.9		1.5		2		2.1		2.1		1.8		1.9		1.7		2		2.1		1.1		0.9

NEARBY - MAP

NEARBY - LIST

Adak Station, Alaska (0 mi / 0 km)
Mount Moffett, Alaska (0 mi / 0 km)
Aleut Point, Alaska (116 mi / 188 km)
Atka, Alaska (122 mi / 196 km)

GEOBA.SE

Adak Island, Alaska