My understanding is, the last measurable snowfall in the Twin Cities has set a record. Four inches of snow fell on Monday, this is the earliest record we've ever had that amount of snow falling in the Twin Cities. We're not alone, I'm sure you've noticed the cooler temperatures where ever you are reading this.
About 48 hours after the snowfall, all of my plants are dead, I've seen several trees where ALL of the leaves have fallen off the trees over night. Like that, winter has started.