After a frosty start to the New Year, relatively warm — well, above freezing — days should begin the first full week of 2013.

The high today should be in the low 40s, and Tuesday’s high should hit 45, according to the National Weather Service. Lows tonight and Tuesday night are expected to stay above freezing.

“We are going to be getting some warm fronts coming through,” Josh Smith, a meteorologist with the weather service in Pendleton, said Sunday evening.

The first warm front was expected to move over Bend late Sunday and early today, and the second should pass through today, Smith said. A cold front should bring back chilly temperatures starting Wednesday, when the weather service is predicting a low in the high teens. The weather systems are coming from the west and northwest.

While last week Bend saw lows in the single digits and highs that didn’t pass freezing, Smith said that the high temperature in town Sunday hit 39 degrees, and it lasted from 1:30 to 4 p.m.

Given the warm and then cold fronts, Smith said the week will likely start off rainy but end snowy. There is a 50 percent chance of rain today and a 60 percent chance of rain Tuesday night, according to the weather service.

“You could have moderate rain at times,” Smith said.

But rain totals should be light. Smith said he expected less than a tenth of an inch of rain to fall in town today and again on Tuesday.

The biggest snow accumulation could come Wednesday, Smith said, once the rain gives way to snow.

It likely won’t be much, though, he said.

“Maybe an inch or two (of snowfall),” Smith said, “And there’ll definitely be more in the mountains.”