Tomaszow Mazowiecki's climate is characterized by cold winters, with January being the coldest month, often dropping below -20°C and averaging around -2°C. Spring arrives in March, bringing mild temperatures ranging from -7°C to 21°C, gradually warming up towards April's average of 6°C. Summer months, June to August, are warm, with July being the hottest, typically reaching highs around 34°C, but also experiencing cooler days around 11°C. Autumn brings another cooling trend in September and October, with temperatures fluctuating between 3°C and 23°C, eventually leading to a chillier November. Winters return by December, mirroring January's cold conditions, with an average temperature of -1°C.