MAIN BAY, ALASKA

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Elevation: 322 meters Latitude: 60 30N Longitude: 148 05W

WEATHER

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CURRENT CONDITIONS

Sunrise/Set

09:35 am

02:02 am
Local Time
8:20 pm EDT
4 May, 2024

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MONTHLY - ALL WEATHER AVERAGES [ Show Summary ]

[ °F ] °C

TEMPERATURE

Average Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		4.1		-3.3		-3		-0.9		2.6		6.2		10.4		13.2		12.8		9.3		3.8		-0.9		-2.1

Average High Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		7.6		-0.3		0.2		3.1		6.7		11.1		14.9		16.4		16.3		12.7		6.9		1.7		0.6

Average Low Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		0.5		-6.2		-6.2		-5		-1.6		1.4		5.8		9.8		9.3		5.8		0.8		-3.7		-4.8

Highest Recorded Temperature

Years on Record: 29

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		30		10		8.3		17.8		24.4		30		29.4		26.7		21.7		14.4		11.1		12.8		30

Lowest Recorded Temperature

Years on Record: 29

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
C		-25		-24.4		-25		-16.7		-3.9		-2.2		3.3		1.1		-2.2		-12.2		-20		-22.8		-25

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		0.2		---		---		---		---		---		---		0.2		---		---		---		---		---

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		7.9		---		---		---		---		0.3		1.9		3.3		2.4		---		---		---		---

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		54.9		---		---		---		0.2		3.3		13.1		16.9		16.6		4.9		---		---		---

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		142.3		0.1		---		---		4.7		17.7		27.6		30.9		31		25.8		4.4		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		227.6		2.7		1.9		10.9		23.3		30.7		30		31		31		30		24.5		7.5		4.1

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		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		331.9		31		28		31		30		31		28.4		15.4		17.1		28.2		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		254.5		31		28		31		29.9		29		9.2		0.1		0.5		9.4		25.9		29.5		30.8

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		164.1		26.5		23.7		25.7		20		6.6		0.1		---		---		0.9		12.1		22.1		26.4

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		56.4		13		11.6		10.6		2.2		---		---		---		---		---		0.8		7.6		10.6

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		18.6		5.6		5.5		3.2		0.2		---		---		---		---		---		---		1.9		2.4

Average Number of Days Below 0F/-17C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		3.4		1.4		1.5		0.3		---		---		---		---		---		---		---		0.1		0.1

PRECIPITATION

Average Precipitation

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		5201.9		500.4		396.2		381		383.5		299.7		226.1		269.2		436.9		563.9		622.3		533.4		594.4

Average Number of Days With Precipitation

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		224.4		19.6		16.8		16.6		16.8		16.7		16.3		19		18.2		22.2		22		18.7		21.5

Most Reported Precipitation in a Month

Years on Record: 29

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		1374		1080		802		889		866		710		805		540		795		1150		1208		1374		1053

Least Reported Precipitation in a Month

Years on Record: 29

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		31		97		48		42		94		71		31		89		44		135		271		77		201

Most Precipitation Reported in a Day

Years on Record: 29

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mm		183.4		152.4		173.5		173		115.1		147.3		101.6		151.6		149.6		181.6		183.4		135.6		159.3

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		188.2		17.4		14.9		14.7		14.3		13.4		12.1		13.7		14.2		18.9		18.6		16.6		19.4

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

Years on Record: 29

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		187		17		15		15		14		13		12		14		14		19		18		16		20

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

Years on Record: 29

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		118		11		10		8		8		8		6		7		9		13		13		11		14

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		116.6		10.9		9.6		8.5		8.5		7.5		5.5		6.8		8.6		12.9		12.5		11.2		14.1

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

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		73.6		7		5.8		5.3		5.5		4.5		2.9		3.5		5.3		8.6		9		7.5		8.7

PRECIPITATION - SNOW

Average Snowfall

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		675.6		148.3		109.2		146.1		29		1		---		---		---		---		15.2		78.2		148.6

Average Number of Days With Snow

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		64.2		13		11.6		11		3.8		0.2		---		---		---		---		2.5		8.1		14

Average Snow Cover

Years on Record: 17

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		68		124		157		190		170		73		2		---		---		---		2		20		76

Most Snow Reported in a Month

Years on Record: 29

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
cm		322.8		290.3		267.2		322.8		107.7		21.1		---		---		---		---		81.5		234.4		269.8

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		51.8		10.7		9.3		9		3		0.1		---		---		---		---		1.8		6.4		11.5

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		29.9		6.5		5.2		5.3		1.5		---		---		---		---		---		0.9		3.9		6.6

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		18		3.9		3.3		3.3		0.7		---		---		---		---		---		0.3		2.4		4.1

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		6.1		1.2		1.1		1.6		0.2		---		---		---		---		---		---		0.7		1.3

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		202.4		30.9		27.7		31		29.8		24.3		3.8		---		---		---		4.4		20.6		29.9

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		195.6		30.7		27.6		31		29.8		24		3.3		---		---		---		2.9		17.1		29.2

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		190.7		30.7		27.6		30.5		29.8		23.6		3		---		---		---		1.8		15.5		28.2

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		177		29.4		27.2		30.4		29.6		22.2		2.2		---		---		---		0.4		10.4		25.2

DEGREE DAYS

Heating Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		9388		1204		1074		1076		852		674		429		290		309		489		809		1042		1139

Growing Degree Days

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		435		---		---		---		---		4		66		177		159		28		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		13.4		7.7		10		12.6		15.6		18.6		20.9		19.4		16.4		13.5		10.7		8.2		6.8

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		9.8		1.3		3.5		7.8		13.9		18.8		20.7		19.3		15.1		9.6		4.9		1.9		0.7

Average Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		5.1		0.9		2.2		4.6		7.1		9		10		9.4		8		5.2		3		1.3		0.5

Average Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		11.5		4.1		7.2		12		17		17.6		17.7		17.1		15.4		12.5		9		5.6		2.7

Average Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		11.8		3.9		6.2		10.2		15.9		20.4		21.6		20		15.8		12.1		7.9		4.9		2.4

Maximum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		9.8		1.3		3.5		7.8		13.9		18.8		20.7		19.3		15.1		9.6		4.9		1.9		0.7

Maximum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		5.2		0.9		2.7		4.8		7.1		9		10		9.5		8		5.4		3.4		1.4		0.5

Maximum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		13.3		4.5		9.8		13.9		19.6		20.1		19.7		19.1		18.6		14		11.1		6.5		3.1

Maximum 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		4.4		8.7		12.2		20.2		24		26		24.3		21.3		14.1		9.8		5.8		2.7

Minimum Daily Solar Radiation - Global

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		8.1		1.2		3		6.3		10.9		15.1		17.9		16.5		13.5		8.1		3.1		1.2		0.6

Minimum Daily Solar Radiation - Diffuse

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		4.9		0.8		2		4.2		7		8.8		9.9		9.4		7.9		4.9		2.2		0.9		0.5

Minimum Daily Solar Radiation - Reflected

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		9		3.6		6		9		12.5		13.8		15.3		14.5		13.4		10		4.6		2.9		2.4

Minimum Daily Solar Radiation - Direct

Years on Record: 22

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Mj/m2		8.1		3.4		5		6.8		9.4		13		16.1		14.6		12.2		8.9		3.6		2.3		2

NEARBY - MAP

NEARBY - LIST

Lake Bay, Alaska (20 mi / 33 km)
North Dutch Island, Alaska (20 mi / 33 km)
Whittier, Alaska (28 mi / 45 km)
Port San Juan, Alaska (31 mi / 50 km)
Portage Glacier - Visitor Center, Alaska (32 mi / 51 km)

GEOBA.SE

Main Bay, Alaska