May Snow in Minnesota - Does not sound like Roo weather

I am watching the weather on NOAA
web site
. I am trying to decide if we are going camping this weekend. Right now
the forecast is not looking too good

How does that work?  At first it does not sound very favorable for snow...
so I am thinking that we might see a couple of flakes overnight... but not a big deal...
then the next sentence is talking about a couple of inches of snow.

Come on... this is a May forecast that we are talking about... give me a