Winters in Ellicott City are cold and relatively consistent, with temperatures ranging from around 2-13°C. As the season transitions into spring, temperatures gradually warm up, reaching averages of 9-28°C in March and 13-30°C by April. Summer brings warmer and more stable conditions, with July and August temperatures averaging around 25°C. Autumn sees a return to cooler temperatures, with October averages returning to near-winter levels before dropping further into November and December.