Winters in Clay are extremely cold, with temperatures often dropping below -20°C and averaging around -3°C in January. The chill persists through February, with a slight warming trend before March brings more consistent temperatures ranging from 0°C to 24°C, marking the beginning of spring. As spring progresses into summer, temperatures rise significantly, reaching highs above 30°C from May to August, with July and August being the warmest months. Autumn brings a return to cooler temperatures, with September and October averaging around 18°C and 14°C respectively, before dropping again in November and December.