Snow forecast

An inch or less of snow is forecast Tuesday across the Baltimore area. (National Weather Service Baltimore/Washington / December 16, 2013)

Another chance for a light snow is ahead early Tuesday after frigid temperatures throughout the day Monday.

Temperatures have been trending colder since early Monday morning, with the day's high possible to have come at 37 degrees around 3 a.m. at Baltimore-Washington International Thurgood Marshall Airport. Temperatures dropped to 31 degrees by midday.

Skies were mostly cloudy, expected to become overcast by the evening.

An inch or less of snow is possible when two systems pass through Tuesday, according to the National Weather Service. A dusting is possible starting about 7 a.m., with a second round possible to come through in the afternoon and mixing with sleet or rain.

Highs Tuesday are forecast around 40 degrees, with lows in the upper 20s in the suburbs and 30s in the city.

Sunshine is expected Wednesday and Thursday, with highs in the 40s and lows in the 20s and 30s.

Clouds and showers are expected Friday along with a major warm-up, with highs in the 50s.