Winters in Lee's Summit are extremely cold, with temperatures often dropping below freezing and averaging around 1°C in January. The coldest months, February and December, see average lows of -5°C and -6°C respectively, while the briefest warm spells reach highs of only 21°C and 23°C. As spring arrives, temperatures gradually rise, with March and April experiencing mild temperatures ranging from 9°C to 29°C on average. Summers are hot but not sweltering, with July and August averaging highs around 25°C, while autumn brings a return to cooler conditions, with October's highs hovering around 15°C before dropping again in winter.