Lake Zurich, IL Weather & Climate Normals
Lake Zurich's real weather, in one number
Lake Zurich, 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.
Lake Zurich's hottest and coldest months
Lake Zurich'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 Lake Zurich
Lake Zurich averages 38.45in of precipitation a year across roughly 128 days with measurable rain or snow, and 43.1in of snow a year.
Where Lake Zurich ranks
Lake Zurich ranks 4011 of 4876 US cities in this dataset for comfort score, and 246 of 330 within IL. About 19,960 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, 4.2 miles from Lake Zurich, not a prediction for any specific day.
More on how this is worked out
What a 30-year climate normal actually is · Why this uses the nearest NOAA station