Kerpen's winters are typically cold and variable, with temperatures often below freezing, but occasionally rising into double digits. Spring arrives in late March, bringing warmer days with temperatures sometimes reaching up to 25°C, but still experiencing chilly nights. Summer is mild, with highs around 27°C, while autumn is cool and unpredictable, with a mix of warm and cold spells. In the winter months, frosty mornings are common, but afternoons can be quite pleasant, especially in December. Overall, temperatures tend to fluctuate significantly throughout the year, with an average annual temperature of around 8-9°C.