The NWS Climate Prediction Center just released their new outlooks (map below). For August, they indicated that Illinois has an increased chance of being warmer than normal (upper left panel). The same is true for the 3-month period of August-October (lower left panel). They have nothing to say about precipitation in Illinois – equal chances of above, below, or near-normal precipitation.
The NWS outlooks have pushed the increased chance of above-normal temperatures for 2017 in Illinois. They are doing well – January, February, March, April, and June have been above normal. Only May was slightly cooler than normal. So far in July, the statewide average temperature is 76 degrees, which is normal for this time of year.