Addison, IL Weather & Climate Normals
What a normal year in Addison actually looks like
On the 30-year record NOAA keeps for Addison, IL, the comfort score comes out to 38/100, weather-driven: Heat, cold, snow, or rainfall here are heavy enough that they shape daily life for a large part of the year. Only 4 months a year land in the 55–75°F range this site treats as mild.
How much Addison's weather actually swings
Average temperatures in Addison run from 25°F in Jan up to 76°F in Jul, a 50.3°F seasonal swing, one of the widest gaps in this dataset.
How wet Addison actually gets
Over a typical year, Addison sees about 37.86in of precipitation a year across roughly 126 days with measurable rain or snow, with 38.4in of snow a year.
Addison against the rest of the country
Out of 4876 cities scored here, Addison comes in at 4695; within IL alone it ranks 301 of 330. Population is about 35,728.
Checking the actual forecast
These figures come from CHICAGO OHARE INTL AP, IL US, the NOAA station 5.9 miles from Addison, 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