Rainiest Cities in Oregon

Portland is the rainiest city in Oregon, with 44.1 in of precipitation in an average year. Every Oregon city with a reporting NOAA station, ranked.

Average annual precipitation, ranked

5 cities
#CityAverage annual precipitation
1Portland44.1 inwettest December
2Eugene40.8 inwettest December
3Gresham40.7 inwettest December
4Salem40.1 inwettest December
5Hillsboro35.9 inwettest December

Thirty-year normals and records from each city's NOAA GHCN-Daily station, computed 2026-08-30. Cities with a population of 100,000 or more and a reporting station. Each city name opens its climate page.

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Normals and records: NOAA GHCN-Daily stations. Sunshine from ERA5 reanalysis. City locations: GeoNames (CC BY 4.0).