Washington Annual Rainfall and Climate Data, see below for individual cities
Washington city precipitation totals
Avg Annual Precip
Avg Annual Snow
|Avg # days of Precip||
Avg # thunderstorm days
|Avg # hail days||Avg # severe thunderstorm watches per year||Avg # tornado watches per year||# of tornadoes reported in county, 1960-2010|
Washington Precipitation Records
- Driest location ranked by lowest annual average precipitation: Priest Rapids Dam , central Washington, 6.84"
- Wettest location ranked by highest annual average precipitation: Quinault Ranger Station, western Washington, 137.21"
- Snowiest location ranked by highest annual average snowfall: Rainier Paradise Ranger Station, western Washington, 680.0"
- State precipitation record for 24 hours - Mount Mitchell, southwestern Washington, 11/23-24/1986, 14.26"
- State precipitation record for 1 year - Wynoochee Oxbow, western Washington, 1931, 184.56"
- State snowfall record for 24 hours - Crystal Mountain, western Washington, 1/23-24/1994, 65.0"
- State snow record for 1 season - Mount Baker, northern Washington, 1998-1999, 1140.0" (95 feet, U.S. record)
- Quillayute, Washington and Astoria, Oregon are the cloudiest cities in the United States with 240 cloudy days per year
- During July and August in western Washington, it is not unusual for two to four weeks to pass with only a few showers
but during the wettest months of December and January, precipitation is frequently recorded on 20 to 25 days or more
- Centralia, Washington holds the state record with 55 consecutive days with measurable precipitation
Washington temperature averages and extremes, Seattle climate extremes/averages, precipitation and temperature data for all U.S. states and Top 10 U.S. climate extremes
Data sources: National Climatic Data Center, Severe thunderstorm / tornado watch data period is 1999 - 2008, NOAA Storm Prediction Center, Tornado climate data - NOAA Storm Prediction Center, State lightning flash density average - 1997-2011, Vaisala