Chicago, IL Weather & Climate Normals
What a normal year in Chicago actually looks like
On the 30-year record NOAA keeps for Chicago, IL, the comfort score comes out to 49/100, 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 Chicago's weather actually swings
Average temperatures in Chicago run from 26°F in Jan up to 74°F in Jul, a 48.2°F seasonal swing, one of the widest gaps in this dataset.
How wet Chicago actually gets
The nearest NOAA station to Chicago records neither precipitation nor snowfall totals, so neither figure is shown rather than guessed.
Chicago against the rest of the country
Out of 4876 cities scored here, Chicago comes in at 2013; within IL alone it ranks 8 of 330. Population is about 2,721,308.
Checking the actual forecast
These figures come from CHICAGO NORTHERLY IS, IL US, the NOAA station 4.1 miles from Chicago, averaged over 30 years, not tomorrow's forecast.
More on how this is worked out
Why some cities show no snow or rain figure · Why this uses the nearest NOAA station