Winters in Jefferson City are cold and varied, with January temperatures averaging just above freezing at 1°C. February is typically the coldest month, with temperatures plummeting as low as -25°C before warming up to 21°C. As winter gives way to spring, March brings mild temperatures, often rising above 10°C, while April and May are characterized by gentle warmth, with average highs around 13°C and 17°C respectively. Summer months of June to August see consistent warmth, with July and August averaging a high of around 25°C, before slowly cooling down in September. Autumn brings another fluctuation, with October temperatures returning to averages similar to those seen in May, while November and December are generally chilly, but not as extreme as February's lows.