Renno is a commune in the Corse-du-Sud department of France on the island of Corsica. Renno has a warm-summer mediterranean climate…Renno is a commune in the Corse-du-Sud department of France on the island of Corsica. Renno has a warm-summer mediterranean climate. The average annual temperature in Renno is 11.8 °C. The average annual rainfall is 1,181.2 mm with November as the wettest month. The temperatures are highest on average in August, at around 20.1 °C, and lowest in January, at around 4.9 °C. The highest temperature ever recorded in Renno was 38.3 °C on 19 July 2023 and 1 August 2017; the coldest temperature ever recorded was −9.4 °C on 11 February 2012.