Passage: Dortmund is situated in the temperate climate zone with oceanic climate (Köppen: Cfb). Winters are comparatively mild, summers rather cool. The average annual temperature lies at approximately 9 to 10 °C (48 to 50 °F), the total average annual amount of precipitation lies at approximately 800 mm (31 in). Precipitation evenly falls throughout the year; steady rain (with some snow), prevails in the wintertime, isolated showers dominate the summer season. Dortmund features characteristics of densely populated areas as for example the occurrence of urban heat islands is typical.

Question: What is the average temperature annually?
9 to 10 °C (48 to 50 °F)