Select a link for the average weather, by month or year, in cities throughout Illinois.
 Temperature |
 Precipitation |
 Snowfall |
|---|---|---|
| January | January | January |
| February | February | February |
| March | March | March |
| April | April | April |
| May | May | |
| June | June | |
| July | July | |
| August | August | |
| September | September | |
| October | October | |
| November | November | November |
| December | December | December |
| Year | Year | Year |
Climate information about temperature, precipitation, snow, sun, humidity, wind and storms in Chicago.
Detailed temperature information for Chicago, Illinois with statistics on average monthly highs and lows plus number of days with hot or cold weather.
When, how much and how often Chicago has snow — with monthly and yearly averages on total days and inches of snowfall, snow accumulation, heavy snowstorms and first snowfall.
Snowfall and snow accumulation averages for:
Antioch | Moline | Peoria | Rockford | Springfield
How often heat combines with humidity at cities in Illinois to create uncomfortably muggy weather.
