The Philadelphia region is currently under a blanket of fog, with weather forecasts indicating a shift towards rain by the end of the week. Initial reports from CBS News highlighted the presence of dense fog, particularly on Tuesday morning, amidst generally mild weather conditions. As the week progresses, temperatures are predicted to climb to approximately 50°F (10°C). This transition suggests a move away from the current foggy environment towards a wetter pattern, with meteorologists keeping a close watch on incoming storms that could potentially impact the area. Beyond the immediate forecast of fog and rain, there's also a developing possibility of snow over the weekend, though the details surrounding this potential snowfall are still uncertain and subject to change.