Chomutov experiences a continental climate with distinct seasonal variations. Winters are chilly, with temperatures often below freezing, but can occasionally rise into double digits, averaging around 0°C in December and January. Spring is characterized by mild temperatures, gradually warming up from -7°C to 19°C in April and May. Summer months bring warmer days, with highs reaching up to 32°C in June and 29°C in July and August, but still cool nights. Autumn cools down rapidly, returning to chilly temperatures around 0°C by October and November.