Marl's climate is characterized by a moderate winter with temperatures often below freezing, averaging around 3-5°C in January and December. As spring arrives, temperatures rise gradually, reaching averages of 6-12°C in March and May. Summer months bring mild conditions, with July being the warmest month, averaging 18°C, while August and June are only slightly cooler. Autumn is relatively cool, with average temperatures ranging from 4-11°C in September to October, before dropping again during winter.