snow
President-elect Donald Trump's airplane sits on the snow-covered tarmac at Gerald Ford International Airport, Dec. 9, 2016, in Grand Rapids, Michigan. Drew Angerer/Getty Images

While winter has not yet officially arrived, snow definitely has. One of the upcoming cold season's signatures was written across the parts of the country this weekend with the latest snowfalls that blanketed major cities from the Midwest to the Northeast. But what has been named Winter Storm Caly was apparently just the tip of the snowy iceberg, according to forecasters.

The current snow system was expected to make its way across the Midwest and the Plains states, affecting everywhere from the Midwest to the Pacific Northwest to the Northeast and the South, according to Weather.com. But it's the Northeast that would likely get the brunt of winter's wrath over the next few months, with multiple snowfalls and blizards along with cold temperatures that could extend well into the spring.

Data curated by WeatherDB

It was too early to offer snowfall estimates, according to AccuWeather. But the frequency of snow falling was all but a guarantee, it added.

"I think the Northeast is going to see more than just a few, maybe several, systems in the course of the season," said AccuWeather Long-Range Forecaster Paul Pastelok. "But still, Boston, Hartford, along the coastal areas up into Connecticut and southern New England, they can still have a fair amount of snow."

Florida and other parts of the South were not exempt from the cold and snowfall, either.

Data curated by WeatherDB

With the snow, of course, comes cold weather. But the 2016-17 winter is also expected to bring lower temperatures than normal.

Chicago was covered with about eight inches of snow over the weekend, while cities up and down the East Coast including New York and Boston got a relative light dusting. Parts of Ohio have gotten up to 21 inches of snow since Friday morning. Temperatures have been below average in many places by double digits. The snow was expected to give way to rain before returning later in the month, NBC News reported.

Winter has been scheduled to officially begin Dec. 21.