Gaithersburg’s free SummerFest celebration will take place on Saturday, June 28, 2025, from 6 to 11 p.m. at Bohrer Park, featuring live music, food and craft beverages, family activities, a 9:20 p.m. fireworks show, and a SummerGlo After Party. Attendees are encouraged to arrive early, follow safety guidelines, and plan ahead for traffic and parking; fireworks will be rescheduled to June 29 in case of inclement weather.