Rouen's climate is marked by moderate temperatures throughout the year, with minimal extremes. Winters are cool and occasionally cold, with average temperatures ranging from 4-7°C during January and December, but rarely dropping below freezing or rising above 16°C. Spring arrives in March, bringing warmer days that can reach up to 25°C, while autumn is similar, with mild temperatures that gradually decrease. Summers are warm, with July being the hottest month, averaging around 18°C, but still quite pleasant for outdoor activities. The temperature fluctuations between seasons are generally gentle, making Rouen's climate relatively stable and comfortable year-round.