SEA-TAC, WASHINGTON

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Elevation: 450 feet Latitude: 47 27N Longitude: 122 18W

WEATHER

Monthly - Summary

CURRENT CONDITIONS

Sunrise/Set

09:04 am

11:10 pm
Local Time
11:17 am EDT
23 April, 2024

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MONTHLY - WEATHER AVERAGES SUMMARY [ Show All Data ]

[ °C ] °F

Average Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		53.2		42.3		43.5		47.4		51.1		56.8		61.9		66.6		67		61.6		52.9		45.9		40.7

Average High Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		61		47.7		50.6		54.6		59.3		65.5		70.8		76.5		77.1		71.2		60.3		51.9		45.9

Average Low Temperature

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		45.4		36.9		36.5		40.1		42.8		48.1		52.9		56.6		56.8		52		45.4		39.9		35.5

Average Precipitation

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in.		40.1		5.7		4.3		4		3.1		2.1		1.6		0.9		0.9		1.7		3.8		6.5		5.4

Highest Recorded Temperature

Years on Record: 68

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		103		64		70		78		85		93		96		103		99		98		89		74		64

Lowest Recorded Temperature

Years on Record: 68

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		---		---		1		11		29		28		38		43		44		35		28		6		6

Average Length of Day

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Hours		12.8		9.6		10.9		12.5		14.2		15.8		16.6		16.1		14.7		13		11.3		9.9		9.1

Average Number of Days Above 90F/32C

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		2.1		---		---		---		---		---		0.3		1.3		0.5		0.1		---		---		---

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		25.7		6.6		5.7		1.8		0.1		---		---		---		---		---		0.5		3.5		7.7

Average Snowfall

Years on Record: 49

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in.		11.8		5		1.6		1.4		0.1		---		---		---		---		---		---		1.2		2.5

Average Number of Rainy Days

Years on Record: 49

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		154		18		16		17		14		10		9		5		6		9		13		18		19

Most Rain Reported in a Month

Years on Record: 48

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in.		55.1		12.9		9.1		8.4		6.5		4.8		3.8		2.4		4.6		5.9		7.8		10.7		11.8

Average Relative Humidity

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		75.2		80.9		76.7		76.7		73.7		71.4		69.9		67.1		69		73.8		80.5		82.5		80.9

Average Morning Relative Humidity

Years on Record: 48

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		83		83		83		84		83		80		79		79		83		88		88		86		85

Average Evening Relative Humidity

Years on Record: 48

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		62		75		69		63		57		54		53		49		51		56		68		76		79

Average Dew Point

Years on Record: 48

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		43		33		35		36		39		44		48		52		53		50		45		39		35

NEARBY - MAP

NEARBY - LIST

Seahurst, Washington (1 mi / 1 km)
Kent, Washington (5 mi / 8 km)
Mercer Island, Washington (5 mi / 9 km)
Manchester, Washington (9 mi / 16 km)
Vashon, Washington (9 mi / 15 km)

GEOBA.SE

Sea-Tac, Washington