After only one dry day so far this week, rainfall will return to much of Pennsylvania today. Many areas along and south of I-80 are already waking up to some showers this morning, but expect this activity to taper off by the noon hour. However, more widespread rainfall will overspread all of the Commonwealth through the evening hours, and will continue through midday on Thursday. Some areas, mainly in southern and eastern Pennsylvania, will exceed an inch of new rainfall by Thursday afternoon. Some light rain and drizzle could continue through Thursday night and Friday, but expect Friday evening through midday Saturday to remain mostly dry. The potential exists for more rain for Saturday night through Memorial Day weekend, so stay tuned for further details.