Portland, OR Weather & Climate Normals
What a normal year in Portland actually looks like
On the 30-year record NOAA keeps for Portland, OR, the comfort score comes out to 60/100, mild with real seasons: A solid stretch of comfortable months alongside a noticeable but not extreme summer or winter. Only 6 months a year land in the 55–75°F range this site treats as mild.
How much Portland's weather actually swings
Average temperatures in Portland run from 42°F in Dec up to 70°F in Aug, a 28°F seasonal swing, a middling gap by national standards.
How wet Portland actually gets
Over a typical year, Portland sees about 44.07in of precipitation a year across roughly 155 days with measurable rain or snow, with 3.6in of snow a year.
Portland against the rest of the country
Out of 4876 cities scored here, Portland comes in at 496; within OR alone it ranks 3 of 80. Population is about 635,749.
Checking the actual forecast
These figures come from PORTLAND KGW-TV, OR US, the NOAA station 2.3 miles from Portland, averaged over 30 years, not tomorrow's forecast.
More on how this is worked out
Why this uses the nearest NOAA station · How the comfort score is calculated