Clayton, MO Weather & Climate Normals
Clayton's real weather, in one number
Clayton, MO scores 44/100 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. 4 of the year's 12 months average between 55 and 75°F, the range this site counts as mild.
Clayton's hottest and coldest months
Clayton's hottest month is Jul, averaging 81°F; its coldest is Jan, averaging 33°F, a 48°F swing across the year, one of the widest gaps in this dataset.
Rain and snow in Clayton
Over a typical year, Clayton sees about 43.91in of precipitation a year across roughly 0 days with measurable rain or snow. That station has no snowfall reading, so none is shown rather than assumed.
Where Clayton ranks
Clayton ranks 3776 of 4876 US cities in this dataset for comfort score, and 78 of 135 within MO. About 17,512 people live there.
If you need tomorrow's forecast, not the 30-year average
Everything above is a 30-year average from ST LOUIS SCI CTR, MO US, 3.3 miles from Clayton, 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