Here, have some data from the coldest month: http://www.accuweather.com/en/de/berlin/10178/january-weather/178087 http://www.accuweather.com/en/de/berlin/10178/

Here, have some data from the coldest month: http://www.accuweather.com/en/de/berlin/10178/january-weather/178087 http://www.accuweather.com/en/de/berlin/10178/january-weathe... (tl;dr - hovering around 0C)