Hamilton's winters are cold and variable, with temperatures often dropping below freezing but occasionally rising into the mid-teens. The coldest months, January and February, see temperatures averaging around -4 and -6°C respectively. Spring arrives slowly, with March still experiencing chilly temperatures before warming up to a moderate 7°C by April. Summer brings warm days, with June and August often seeing highs above 30°C, but also some cooler mornings. Autumn is mild, with September's temperature fluctuating between cool and warm, before dipping back into winter-like conditions in November and December.