Mundelein, IL Weather & Climate Normals
Mundelein's real weather, in one number
Mundelein, IL scores 43/100 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.
Mundelein's hottest and coldest months
Mundelein's hottest month is Jul, averaging 72°F; its coldest is Jan, averaging 21°F, a 51°F swing across the year, one of the widest gaps in this dataset.
Rain and snow in Mundelein
Mundelein averages 38.45in of precipitation a year across roughly 128 days with measurable rain or snow, and 43.1in of snow a year.
Where Mundelein ranks
Mundelein ranks 3983 of 4876 US cities in this dataset for comfort score, and 234 of 330 within IL. About 32,641 people live there.
If you need tomorrow's forecast, not the 30-year average
Everything above is a 30-year average from MUNDELEIN 4 WSW, IL US, 3.4 miles from Mundelein, not a prediction for any specific day.
More on how this is worked out
How the comfort score is calculated · Why some cities show no snow or rain figure