Oderen is a commune in the Haut-Rhin department in Grand Est in north-eastern France. Oderen has a humid continental climate closely bord…Oderen is a commune in the Haut-Rhin department in Grand Est in north-eastern France. Oderen has a humid continental climate closely bordering on a subarctic climate. The average annual temperature in Oderen is 6.0 °C. The average annual rainfall is 1,523.3 mm with December as the wettest month. The temperatures are highest on average in August, at around 14.2 °C, and lowest in January, at around −1.5 °C. The highest temperature ever recorded in Oderen was 30.3 °C on 7 August 2015; the coldest temperature ever recorded was −20.4 °C on 20 December 2009.