Genk's winters are chilly and unpredictable, with temperatures often dropping below freezing in January and February. Spring arrives in March, bringing mild temperatures that can fluctuate wildly between cold snaps and warm days, while April is generally milder but still prone to cool spells. Summer is warm, with July and August seeing average highs around 18°C, but occasional heatwaves can push temperatures into the mid-30s. Autumn is mild, with temperatures gradually cooling from September to November. December sees a return to chilly winter conditions.