It was 6:30 a.m. Sunday on a District street and a man was letting his car run for a time without him in it, and who could blame him. It felt as if it was 16 degrees out there, according to the wind-chill figures.

A thief jumped into that car, in the 1300 block of Shepherd Street NW, near the Petworth area, and away he went, according to a D.C. police account.

Police soon spotted the vehicle about two miles away, near Fourth and Kennedy streets, then in the 800 block of Kennedy. The vehicle swerved into an alley, police said, and someone got out and ran. One person was arrested, police said.

Acknowledging that “the cold weather is upon us,” a D.C. police official asked motorists to nevertheless refrain “from leaving your vehicle running unattended.”

It certainly was cold. At Dulles International Airport, the mercury fell to 16 degrees early Monday. That was 17 degrees below the normal there for Nov. 25 and just one degree above the low-temperature record for the date, which was set at Dulles 43 years ago.

However, Washington’s weather is expected to shift from cold and dry to less cold but very wet and possibly slippery. Rain and freezing rain are anticipated in the region for Tuesday and mere rain for Wednesday, with totals of two to three inches possible.