Chicago Weather: Slight Warm Up Through The Week

CHICAGO (CBS) -- Continuing a slow, subtle warm-up for the next couple of days.

Today: Sunshine early, then increasing clouds. High 31.

Tonight: Mostly cloudy. Isolated snow showers. Little to no accumulation. Low 21.

Tomorrow: Mostly cloudy. High 32.

Highs in the 30s through Thursday, then much colder. Lows dip back into the single digits By the end of the week.