Gaithersburg's winters are typically cold and varied, with temperatures often dropping below freezing but occasionally rising into the mid-teens. Spring brings a gradual warming trend, with temperatures steadily increasing until May when they reach an average of 17°C. Summer is warm to hot, with July being the hottest month on record, although temperatures rarely exceed 35°C for extended periods. Autumn sees a return to cooler temperatures, similar to those experienced in spring, with September and October often experiencing mild days followed by chilly nights. Winters are consistently cold, with temperatures averaging around 2-7°C throughout December and January.