The rain and storms could disrupt outdoor Halloween activities, particularly in the Southwest, Southeast, and Southern Plains. Flash flood risks are significant in central Arizona, Louisiana, and parts of Georgia, with rainfall totals of 2-5 inches in some areas. Trick-or-treaters in these regions may face hazardous conditions, including localized flooding. Meanwhile, the Northeast and Mid-Atlantic will enjoy dry and mild weather, offering the best conditions for Halloween festivities. (Source: FOX Weather, Source time: not specified)