Winters in Tarnobrzeg are cold and unpredictable, with temperatures often dropping below -19°C in February, the coldest month. Spring brings a gradual warming trend, with April and May averaging around 6-13°C, making it a pleasant time of year. Summer months are warm to hot, with July being the hottest, averaging 22°C, but temperatures can still reach as high as 34°C in June. Autumn is generally mild, with September and October averaging around 9-13°C, before cooling off again in November.