St. Peters, MO Weather & Climate Normals
What a normal year in St. Peters actually looks like
On the 30-year record NOAA keeps for St. Peters, MO, the comfort score comes out to 47/100, strongly seasonal: Comfortable weather is limited to a shorter window; summers, winters, or precipitation swing wide. Only 5 months a year land in the 55–75°F range this site treats as mild.
How much St. Peters's weather actually swings
Average temperatures in St. Peters run from 30°F in Jan up to 78°F in Jul, a 47.5°F seasonal swing, one of the widest gaps in this dataset.
How wet St. Peters actually gets
Over a typical year, St. Peters sees about 42.34in of precipitation a year across roughly 111 days with measurable rain or snow, with 14.8in of snow a year.
St. Peters against the rest of the country
Out of 4876 cities scored here, St. Peters comes in at 2559; within MO alone it ranks 60 of 135. Population is about 61,398.
Checking the actual forecast
These figures come from ST PETERS 2 SE, MO US, the NOAA station 1.2 miles from St. Peters, averaged over 30 years, not tomorrow's forecast.
More on how this is worked out
Why some cities show no snow or rain figure · What a 30-year climate normal actually is