Does anyone know what this is?

So, I was looking at the forecast for Chicago, and I saw this...

Any ideas what this might be?

It looks like 40's and rain showers every day until then (fun), but on Saturday...SNOW SHOWERS!

I am like a little kid hoping for some snow, even a few flakes to fall so my kids (uh, me too) can see snow...

We'll see!

Rob