Parts of the Gulf South are bracing for what could be some of the coldest temperatures of the winter.

The National Weather Service has issued a hard freeze warning for Saturday night for parts of southeast Mississippi, south Alabama and northwest Florida, with temperatures expected in the low- to mid-20s. Lows this time of year are generally in the upper-30s to low-40s across the region, according to forecaster Don Faulkner, in the weather service’s Mobile, Ala., office.

He said some records could be broken in the cold snap, which is expected to last through Friday and continue to bring below-freezing lows to the region.