Des Moines, WA Weather & Climate Normals
Des Moines's real weather, in one number
Des Moines, WA scores 56/100 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.
Des Moines's hottest and coldest months
Des Moines's hottest month is Aug, averaging 67°F; its coldest is Dec, averaging 42°F, a 25.3°F swing across the year, a middling gap by national standards.
Rain and snow in Des Moines
Des Moines averages 39.34in of precipitation a year across roughly 156 days with measurable rain or snow, and 6.3in of snow a year.
Where Des Moines ranks
Des Moines ranks 753 of 4876 US cities in this dataset for comfort score, and 44 of 125 within WA. About 33,207 people live there.
If you need tomorrow's forecast, not the 30-year average
Everything above is a 30-year average from SEATTLE TACOMA INTL AP, WA US, 3.9 miles from Des Moines, not a prediction for any specific day.
More on how this is worked out
What a 30-year climate normal actually is · Why this uses the nearest NOAA station