The January air will get up to almost 40 degrees today -- but it'll get down to just 4 in no time.

Today will be partly sunny and windy with a high near 39, according to the National Weather Service. Temperatures will get down to around 23 tonight.

Tomorrow will be less breezy and even warmer, with a high near 42, the forecast says. That night will get down around 19 degrees, and that's when it'll start to get colder.

York will see a 30 percent chance of light snow on Tuesday, which will be mostly cloudy with a high near 22, the service says. That night will have a low of 4 degrees.