ROCK ISLAND, WASHINGTON

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Elevation: 1230 feet Latitude: 47 24N Longitude: 120 12W

WEATHER

Monthly - Summary

CURRENT CONDITIONS

Sunrise/Set

09:04 am

10:55 pm
Local Time
1:36 pm EDT
18 April, 2024

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MONTHLY - WEATHER AVERAGES SUMMARY [ Show All Data ]

[ °C ] °F

Average Temperature

Years on Record: 40

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		50		28		33		42		50		59		66		73		71		62		50		37		28

Average High Temperature

Years on Record: 40

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		59		32		41		51		60		69		78		86		84		75		60		42		32

Average Low Temperature

Years on Record: 40

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
F		39		23		28		32		39		46		53		59		59		50		39		32		23

Average Precipitation

Years on Record: 40

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in		8.6		1.1		0.9		0.6		0.6		0.6		0.6		0.4		0.4		0.4		0.5		1.2		1.4

Average Number of Days With Precipitation

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		67.9		9		7.1		5.9		4.8		5.5		4.4		2.6		2.1		2.6		4.5		9.1		10.3

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		28.1		---		---		---		---		1		2.9		12		10.1		2.1		---		---		---

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		99.1		25.7		19.5		9.1		1.5		---		---		---		---		---		2.4		14.5		26.4

Average Snowfall

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
in.		33.3		9.8		4.4		1		---		---		---		---		---		---		0.2		5		12.9

Average Number of Days With Snow

Years on Record: 30

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
Days		18.5		5.7		3		1		---		---		---		---		---		---		0.1		2.2		6.5

Average Relative Humidity

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
%		57.8		82.3		73		58		48.7		45.7		43.8		38.8		41		46.7		58.6		75.9		81.1

Average Wind Speed

Years on Record: 20

		ANNUAL		JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC
mph		6.8		3.1		4.1		6.6		8.4		9.1		9.9		9.7		8.9		7.6		6		4.2		3.3

NEARBY - MAP

NEARBY - LIST

East Wenatchee, Washington (0 mi / 0 km)
Wenatchee, Washington (1 mi / 1 km)
Cashmere, Washington (5 mi / 8 km)
Monitor, Washington (7 mi / 11 km)
George, Washington (15 mi / 25 km)

GEOBA.SE

Rock Island, Washington