Ranked from NOAA 1991-2020 Climate Normals
Wettest Counties in Washington
Total annual precipitation by county, wettest first. Rainfall drives roof and siding wear, basement water, and in much of the country the flood component of the insurance premium. Figures are NOAA 1991-2020 Climate Normals from the weather station nearest each county seat, so they describe a thirty-year average rather than any single year.
Washington ranked
| # | County | Annual rainfall | FEMA risk rating | Median home |
|---|---|---|---|---|
| 1 | Wahkiakum County | 103.5" | Very Low | $344,500 |
| 2 | Mason County | 92.0" | Relatively Moderate | $377,400 |
| 3 | Skamania County | 88.9" | Relatively Low | $472,600 |
| 4 | Pacific County | 83.7" | Relatively Moderate | $274,000 |
| 5 | Whatcom County | 83.0" | Relatively Moderate | $536,100 |
| 6 | Skagit County | 71.2" | Relatively Moderate | $486,200 |
| 7 | Grays Harbor County | 68.8" | Relatively High | $279,500 |
| 8 | King County | 63.3" | Very High | $811,200 |
| 9 | Kitsap County | 56.9" | Relatively Moderate | $505,700 |
| 10 | Clark County | 52.4" | Relatively Moderate | $487,900 |
| 11 | Lewis County | 50.6" | Relatively Moderate | $341,500 |
| 12 | Thurston County | 50.6" | Relatively High | $451,500 |
| 13 | Pierce County | 45.1" | Relatively High | $484,400 |
| 14 | Cowlitz County | 40.7" | Relatively Moderate | $367,400 |
| 15 | Snohomish County | 33.4" | Relatively High | $644,600 |
| 16 | Clallam County | 29.4" | Relatively Moderate | $385,600 |
| 17 | Jefferson County | 29.4" | Relatively Low | $495,100 |
| 18 | Chelan County | 27.2" | Relatively Moderate | $454,900 |
| 19 | Pend Oreille County | 22.5" | Very Low | $307,800 |
| 20 | Island County | 21.7" | Relatively Low | $535,300 |
| 21 | Stevens County | 21.4" | Relatively Low | $308,000 |
| 22 | Columbia County | 18.8" | Very Low | $256,100 |
| 23 | Walla Walla County | 18.7" | Relatively Low | $375,600 |
| 24 | San Juan County | 18.5" | Very Low | $726,500 |
| 25 | Ferry County | 18.1" | Relatively Low | $274,500 |
| 26 | Garfield County | 17.6" | Very Low | $214,200 |
| 27 | Whitman County | 17.5" | Very Low | $323,300 |
| 28 | Spokane County | 17.4" | Relatively Moderate | $370,500 |
| 29 | Klickitat County | 16.5" | Relatively Low | $388,700 |
| 30 | Asotin County | 12.9" | Very Low | $286,200 |
| 31 | Lincoln County | 12.6" | Relatively Low | $272,300 |
| 32 | Okanogan County | 11.6" | Relatively Moderate | $284,200 |
| 33 | Adams County | 10.1" | Very Low | $251,300 |
| 34 | Kittitas County | 9.2" | Relatively Moderate | $459,900 |
| 35 | Franklin County | 8.8" | Relatively Low | $345,700 |
| 36 | Yakima County | 8.0" | Relatively Moderate | $281,100 |
| 37 | Benton County | 7.6" | Relatively Moderate | $369,400 |
| 38 | Douglas County | 7.6" | Relatively Low | $402,900 |
| 39 | Grant County | 7.6" | Relatively Low | $275,700 |
Every figure is modelled on the county's own median home with 20% down at 7.03%. Property tax and electricity are county and state specific; homeowners insurance uses the NAIC average premium for that state, which ranges from 0.16% of home value in Hawaii to 1.16% in Oklahoma. Maintenance and water are national estimates. Full methodology.
Nationwide
Wettest Counties across all 3,133 US counties · Every county in Washington