Winters in Tarnow are cold, with temperatures often dropping below -10°C and averaging around -1°C. Spring brings moderate warming, with March and April temperatures gradually increasing towards the mid-teens Celsius. Summer months, particularly June and July, are warm to hot, with average highs reaching up to 22-23°C, although occasional days can reach as high as 34°C. Autumn is generally mild, with September being one of the warmer months, but temperatures start cooling down in October, returning to around freezing by November.