Winters in Norderstedt are cold and variable, with temperatures often dropping below freezing, averaging around 1°C in January and 2°C in February. Mornings can be chilly even in March, but afternoons bring mild conditions, setting the stage for spring. April and May see a steady warming trend, with daytime highs frequently reaching into the mid-teens to low twenties. Summer months are relatively cool, with July being the warmest month on average at around 19°C. As autumn approaches, temperatures gradually decrease, returning to cooler winter conditions by December.