An outdoor wedding in Detroit will be most favorable for all of the guests in attendance if scheduled in September. June, July, August, and September can make for particularly lovely wedding months. Rain is the primary concern for couples in and around Detroit, with an unpredictable period of rainfall endangering the possibility of an outdoor wedding, meaning that couples will always be safer with an indoor backup option. With all that said, indoor weddings are always an option, with virtually limitless options across the city and beyond.