This week's weather forecasts haven't been too accurate, but we'll try again. It now appears that the weekend will be hazy, hot and humid with a chance of showers or thunderstorms each day through Sunday. Showers are already popping up around the metro area this morning. Later in the day those showers may contain heavy downpours. This afternoon's high will be in the sticky upper 80s. A warm and muggy air mass contains a high......