Winters in Overland Park are typically cold, with temperatures often dropping below freezing and averaging around 1°C in January. The coldest months are February and December, with average lows of -5°C and -9°C respectively. Spring arrives in March, bringing mild temperatures that gradually warm up throughout the month, with averages rising to 9°C by the end of the month. Summer is hot and humid, with July and August experiencing sweltering highs around 37°C. In autumn, temperatures cool down again, with September experiencing a brief drop before warming back up in October, which has an average temperature similar to March's.