BIRMINGHAM, Ala. (AP) — Forecasters say there's a chance for rain and snow showers across parts of northern Alabama late Tuesday night into Wednesday morning. However, little snow accumulation is expected. The National Weather Service says new snow accumulation of less than a half-inch is possible in the Birmingham area. Cooler temperatures are also in store for Alabama for the second half of the week. Lows temperatures of around 19 degrees are expected in the Huntsville and Florence areas by early Saturday. In the Birmingham metro area, temperatures are expected to begin sliding Wednesday toward overnight lows of around 21 degrees by the weekend. Lows in the Montgomery and Mobile areas are expected to be in the lower to mid-20s by the weekend.