St. Helens, OR Weather & Climate Normals
St. Helens's real weather, in one number
St. Helens, OR scores 55/100 on this site's reading of NOAA's own 30-year normals: strongly seasonal. Comfortable weather is limited to a shorter window; summers, winters, or precipitation swing wide. 5 of the year's 12 months average between 55 and 75°F, the range this site counts as mild.
St. Helens's hottest and coldest months
St. Helens's hottest month is Aug, averaging 67°F; its coldest is Dec, averaging 38°F, a 29.5°F swing across the year, a middling gap by national standards.
Rain and snow in St. Helens
Rain and snow totals are both unavailable at St. Helens's nearest NOAA station, so neither figure is shown here rather than assumed.
Where St. Helens ranks
St. Helens ranks 860 of 4876 US cities in this dataset for comfort score, and 44 of 80 within OR. About 14,460 people live there.
If you need tomorrow's forecast, not the 30-year average
Everything above is a 30-year average from SAINT HELENS RFD, OR US, 2.7 miles from St. Helens, not a prediction for any specific day.
More on how this is worked out
Why some cities show no snow or rain figure · What a 30-year climate normal actually is