US Counties With the Highest Wet Days

3,108 US counties ranked by wet days, from highest to lowest. First are Tillamook County, OR (151), Clatsop County, OR (148) and Jefferson County, WA (148). The middle one of the 3,108 has 72.

What this measures

The number of days in the year with at least a tenth of an inch of rain or melted snow. NOAA maps each day's weather station readings onto squares about 3 miles wide and averages them over the county. Any rain at all would count too many days: the county average is above zero when a shower wets just one corner. A state's figure is the average of its counties, each weighted by its land area. Lower 48 states only, from 1951. Source: NOAA NCEI nClimGrid-Daily.

For most measures, a national ranking mostly sorts places by income and by how urban they are. Each county’s own page compares it with the 50 counties most like it instead, which is often the fairer view.

The 100 highest counties

Every state, highest first

Each state’s own published figure, not an average of its counties.

More on wet days

• US Counties With the Lowest Wet Days
• Wet days by US county: map by year and what it goes with

A ranking describes places, not the people in them, and a high or low place does not by itself say why. All US rankings.