Winters in Eschweiler are typically cold and unpredictable, with temperatures often dropping below freezing but occasionally rising into double digits. The coldest months are January and December, with average temperatures around 0°C and 3°C respectively. Spring arrives slowly, with March temperatures still fluctuating wildly between -10°C and 25°C, before stabilizing in April and May as the mercury rises steadily towards summer highs. Summer is warm but not hot, with July and August averaging around 15°C, while September sees a slight cooling trend. Autumn brings another rollercoaster of temperatures, with October and November experiencing chilly mornings and mild afternoons before winter's chill sets back in.