Poughkeepsie's winters are cold and occasionally frigid, with temperatures often below freezing. Spring arrives in March, bringing temperatures into the mid-20s Celsius, but April and May see a more noticeable warming trend, with highs in the late 20s. Summer is warm to hot, with July and August seeing average temperatures around 22 degrees Celsius, but also experiencing occasional heatwaves that push temperatures into the mid-30s. Autumn brings a gradual cooling, with September being the warmest month before temperatures drop back down in October and November. Winters return by December, bringing chilly conditions once more.