Cicadas are supposed to be out when the ground reaches 65 degrees, or around may 22.
Quoting my local newspaper:
The "singing" will end sometime around the third week of June when the males die off and the females remain to lay eggs into July.
Despite the little threat cicadas pose to the garden, young trees and small shrubs are particularly appealing to female cicadas. Trees with trunk diameters < 2.5" are prime real estate for eggs. The female will split the bark along the trunk and small branches
However the same article also says:
While some neighborhoods will be blanketed with the insect, others will escape unscathed - particularyly those built in the past few decades. Bulldozing the ground in preparation for building killed the trees, thereby destroying their root systems and eliminating the cicada's food source.
I don't think that Herrick Lake will be spared, however.
I also read that there are supposed to be approx. 1.5 million cicadas per acre of property, with about 300 holes per sq. yard of property.
So, basically, anywhere from early July on will be noise-free.
For those who don't know, these cicadas are called periodical cicadas, and only come out every 7 years. From what I have read, these are pretty much and Illinois-only thing. These periodical cicadas look like this:
There are also dog day cicadas, which come around every year, just like other insects.
They look like this:
The main difference is that the periodical (17 year) ones have red eyes with black bodies, and the dog day cicadas have black eyes with green bodies. These bugs are a member of the grasshopper family.
On a side note:
For those daring enough to eat the cicada, the U of I Extension said the insect is perfectly edible. And no, cicadas don't taste like chicken. College students "taste tested" the cicadas in 1990 and all agreed the insects tasted like almonds. The cicadas also smell like almonds when dried in a microwave. Yum!