Weather Forecast, Tinley Park

Quick Pick
| Month | Mean Temp °C | Mean Min Temp °C | Mean Max Temp °C | Mean Monthly Prec Days | Mean Monthly Days with Thunder | Mean Monthly Sleet/Snow Days |
| January | -6.1 °C | -10.6 °C | -1.7 °C | n/a | .4 | n/a |
| February | -3.7 °C | -8.2 °C | .8 °C | n/a | .3 | n/a |
| March | 2.9 °C | -1.9 °C | 7.7 °C | n/a | 2.0 | n/a |
| April | 9.2 °C | 3.7 °C | 14.8 °C | n/a | 4.1 | n/a |
| May | 14.9 °C | 8.7 °C | 21.2 °C | n/a | 4.9 | n/a |
| June | 20.3 °C | 14.2 °C | 26.4 °C | n/a | 6.5 | n/a |
| July | 22.9 °C | 17.0 °C | 28.7 °C | n/a | 6.1 | n/a |
| August | 22.1 °C | 16.4 °C | 27.7 °C | n/a | 6.0 | n/a |
| September | 18.0 °C | 12.2 °C | 23.8 °C | n/a | 4.7 | n/a |
| October | 11.6 °C | 5.7 °C | 17.4 °C | n/a | 1.6 | n/a |
| November | 4.4 °C | -.2 °C | 9.1 °C | n/a | 1.1 | n/a |
| December | -3.0 °C | -7.2 °C | 1.1 °C | n/a | .7 | n/a |
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