Winters in Great Falls are harsh and cold, with temperatures frequently dropping below freezing, averaging around 0°C in January and -11°C in February. Spring arrives slowly, with March temperatures still quite chilly, but gradually warming up to a more pleasant average of 5°C by April. Summers bring mild warmth, with June and July often seeing highs above 20°C, while August can be cooler, mirroring the temperature pattern seen in June. Autumn is similar to spring, with September temperatures averaging around 16°C before cooling down to near-freezing levels by November.