Winters in Zawiercie are cold, with temperatures often below freezing, averaging around -1°C in January and -1°C in December. Spring arrives slowly, with March temperatures gradually warming up to an average of 3°C, while April brings more consistent warmth, averaging 6°C. Summer is mild and pleasant, with July being the warmest month, averaging 21°C, but temperatures can still reach highs of over 30°C. Autumn is a relatively cool season, with September averaging 14°C and October averaging 9°C, before dropping again in November to an average of 5°C.