"It's more than likely not going to be until very late Christmas Day," said Meteorologist Chris Liscinsky, of the National Weather Service in West Columbia, S.C.
National Weather Center records, which go back to 1850, have never shown snow falling on Christmas Day in Augusta.
With highs in the mid to upper 40s, the majority of the day will be filled with rain. Later that night, a mix of snow and rainfall could begin to fall. By late Saturday to early Sunday, when temperatures fall into the 20s, there's a possibility for a "brief changeover into light snow."
"With surface temperatures in the 40s, anything that initially falls will probably melt," Liscinsky said.
The Augusta area is expected to see accumulation of only one-tenth of an inch or less.
Farther north, near Atlanta, there's a 50 percent chance for snow on Christmas night. Like Augusta, rainfall is all that's foreseen for Christmas Day.
The strong storm system churning its way through the desert Southwest early Thursday will bring metro Atlanta a good chance for a white Christmas, with accumulating snow possible as far south as the Columbus and Macon areas, forecasters said.