Ottawa's humid semi-continental climate boasts a vast range of temperatures between summer and winter. Essentially, the city has unpredictable weather conditions. Winters are generally snowy and icy. Average low temperatures in winter (December to February) can drop to 5°F (-15°C) at night. However, averages are misleading because days can be much warmer or colder. Ice storms can occur. Summer (June to August) in Ottawa is warm and humid, with temperatures exceeding 80°F (27°C) fairly often, sometimes as early as April and as late as October. Summers are usually short, though, while spring and autumn are unpredictable, with potentially early or late snowfalls, or unseasonal heat waves.
