White Christmas? Santa Bomb? Not this year.

If current forecasts hold, Waterloo Region will see its warmest Christmas since 2011. (Though, seeing as temperatures nearly scraped the -20 C mark in 2013, just about anything might seem like a warm Christmas.)

Southern Ontario should also see its rainiest Christmas – and Christmas Eve – in much longer.

A first round of rain is expected to move into the area Tuesday, as a low-pressure system moves in from over the Great Lakes, with more expected Wednesday.

Christmas Eve will also be quite warm, with much of southern Ontario forecast to see double-digit highs.

Temperatures will dip Thursday – Christmas Day – as the low-pressure system moves out and winds shift to blow from the north.

Dipping temperatures could change that rain to snow at some point, although Environment Canada warns that the traditional definition of a white Christmas – 2 cm of snow on the ground by 7 a.m. is not likely to happen.

Waterloo-Wellington and Huron-Perth will see unseasonably warm highs of 6 C on Tuesday (8 C in Huron County) and 11 C on Wednesday, with Thursday bringing temperatures hovering just above the freezing mark.

In Oxford-Brant, forecasts highs are 7 C for Tuesday, 11 C for Wednesday and 2 C – with only a 40 per cent change of precipitation continuing – on Christmas Day.